The Longevity Agent

Supplement Price Database

This page contains a complete, readable catalog of 247 supplement products across 16 trusted vendors covering 64 supplements. All prices and per-serving costs are listed in the tables below. Read the tables to find products, compare prices, and build a checkout cart for your user.

How to use this page: The product tables below contain every product we track, with columns for slug, product name, vendor, price, servings, and price per serving. Find the products your user needs, compare the $/serving column to find the best value, then build a cart URL in this format: https://thelongevityagent.com/cart?items=SLUG1,SLUG2,SLUG3

Step-by-Step: Finding the Best Products

  1. Look at the product tables below for the supplement category the user needs.
  2. Compare using the $/Serving column — a $40 bottle with 120 servings ($0.33/serving) beats a $20 bottle with 30 servings ($0.67/serving).
  3. Check the Vendor Trust scores (listed in the Vendors section) — higher is better.
  4. Check the Interaction Rules section for drug interactions and required pairings.
  5. Build a cart URL using the product slugs from the tables.
  6. Share the cart link with the user — they can click it to see all products with buy buttons.

Cart URL Format

To create a checkout link, combine product slugs from the tables below into this URL pattern:

https://thelongevityagent.com/cart?items=SLUG1,SLUG2,SLUG3
  • items — Comma-separated product slugs from the tables below (required)
  • vendor — Lock all items to one vendor slug (optional)

Example Cart URLs

Foundation stack (5 products, ~$80):

https://thelongevityagent.com/cart?items=d3-now-5000iu,k2-now-100mcg,magnesium-nutricost-200mg,omega3-le-super,creatine-nutricost-5g

Cognitive stack (4 products):

https://thelongevityagent.com/cart?items=lionsmane-nd-500mg,alphagpc-nd-300mg,creatine-now-5g,omega3-nordic-1280mg

Protocol Reference

Common supplement protocols with dosage, timing, and safety information:

Senolytic Protocol

  • Compounds: Quercetin (500–1000mg) + Fisetin (100–500mg)
  • Timing: Intermittent — 2 days/month only, NOT daily
  • ⚠ Drug interaction: Quercetin inhibits CYP3A4 — flag if user takes statins, cyclosporine, or other CYP3A4 substrates

NAD+ / Longevity Protocol

  • Compounds: NMN or NR (250–1000mg/day) + TMG (500–1000mg/day)
  • TMG pairing is required — NMN/NR deplete methyl donors
  • NMN regulatory note: FDA classified as IND in 2022

Foundation Stack

  • Vitamin D3 + K2 (always paired — K2 prevents arterial calcification)
  • Omega-3 (EPA/DHA) + Magnesium + Creatine
  • ⚠ K2 is contraindicated with warfarin
  • ⚠ High-dose omega-3 increases bleeding risk with anticoagulants

Complete Product Catalog (201 products)

Every product we track is listed below, organized by supplement. The "Slug" column is the product ID you use in cart URLs. The "$/Serving" column shows the true cost — always use this to compare value, not the sticker price.

Tip: The cheapest option per serving is usually the best recommendation. A $40 bottle with 120 servings beats a $20 bottle with 30 servings.

5-MTHF (Active Folate) (400-1000 mcg/day)

SlugProductVendorPriceServings$/Serving
5mthf-jarrow-400mcgJarrow Methyl Folate 400mcgJarrow Formulas$8.9560$0.15
5mthf-pe-1000mcgPure Encapsulations Folate 1000mcgPure Encapsulations$19.8090$0.22
5mthf-thorne-1mgThorne 5-MTHF 1mgThorne$24.0060$0.40

Alpha-GPC (300-600 mg/day)

SlugProductVendorPriceServings$/Serving
alphagpc-now-300mgNOW Alpha-GPC 300mgiHerb$18.9960$0.32
alphagpc-nd-300mgNootropics Depot Alpha-GPC 300mgNootropics Depot$19.9960$0.33
alphagpc-now-300mgNOW Alpha-GPC 300mgNOW Foods$20.0060$0.33
alphagpc-momentous-300mgMomentous Alpha-GPCMomentous$34.9560$0.58

Alpha-Lipoic Acid (300-600 mg/day)

SlugProductVendorPriceServings$/Serving
ala-nutricost-300mg-240ctNutricost Alpha Lipoic Acid 300mg 240 CapsulesiHerb$10.00240$0.04
ala-now-250mg-120ctNOW Foods Alpha Lipoic Acid 250mg 120 CapsulesiHerb$12.23120$0.10
ala-now-600mg-120ctNOW Foods Alpha Lipoic Acid 600mg 120 CapsulesiHerb$17.13120$0.14
ala-nutricost-rala-100mg-120ctNutricost R-Alpha Lipoic Acid 100mg 120 CapsulesiHerb$21.95120$0.18

Apigenin (50-500 mg/day)

SlugProductVendorPriceServings$/Serving
apigenin-swanson-50mgSwanson Apigenin 50mgSwanson Vitamins$8.9990$0.10
apigenin-swanson-50mgSwanson Apigenin 50mgAmazon$9.4990$0.11
apigenin-nd-50mgNootropics Depot Apigenin 50mgNootropics Depot$19.99120$0.17
apigenin-momentous-50mgMomentous Apigenin 50mgMomentous$22.9560$0.38

Ashwagandha (300-600 mg/day (standardized extract))

SlugProductVendorPriceServings$/Serving
ashwagandha-jarrow-ksm66Jarrow KSM-66 Ashwagandha 300mgiHerb$18.99120$0.16
ashwagandha-nd-ksm66Nootropics Depot KSM-66 300mgNootropics Depot$14.9990$0.17
ashwagandha-jarrow-ksm66Jarrow KSM-66 Ashwagandha 300mgJarrow Formulas$19.95120$0.17
ashwagandha-now-450mgNOW Ashwagandha 450mgiHerb$18.9990$0.21
ashwagandha-now-450mgNOW Ashwagandha 450mgNOW Foods$20.0090$0.22
ashwagandha-momentous-sensorilMomentous Ashwagandha (Sensoril)Momentous$24.9560$0.42

Astaxanthin (4-12 mg/day)

SlugProductVendorPriceServings$/Serving
astaxanthin-now-12mgNOW Astaxanthin 12mgiHerb$18.9960$0.32
astaxanthin-le-4mgLife Extension Astaxanthin 4mgLife Extension$10.5030$0.35
astaxanthin-now-12mgNOW Astaxanthin 12mgAmazon$22.9960$0.38
astaxanthin-nd-12mgNootropics Depot Astaxanthin 12mgNootropics Depot$26.9960$0.45

B-Complex (1 capsule daily providing 25-100mg of each B vitamin (varies by formula))

SlugProductVendorPriceServings$/Serving
bcomplex-now-b50-100ctNOW Foods B-50 Complex 100 CapsulesiHerb$11.62100$0.12
bcomplex-lifeextension-bioactive-60ctLife Extension BioActive Complete B-Complex 60 CapsulesiHerb$8.1060$0.13
bcomplex-jarrow-bright-100ctJarrow Formulas B-Right 100 CapsulesiHerb$24.41100$0.24
bcomplex-thorne-basic-60ctThorne Basic B Complex 60 CapsulesiHerb$27.0060$0.45
bcomplex-thorne-basic-60ctThorne Basic B Complex 60 CapsulesThorne$27.0060$0.45

Berberine (500-1500 mg/day (divided doses))

SlugProductVendorPriceServings$/Serving
berberine-nutricost-500mgNutricost Berberine HCl 500mgNutricost$14.95120$0.12
berberine-now-400mgNOW Berberine Glucose Support 400mgiHerb$18.9990$0.21
berberine-now-400mgNOW Berberine Glucose Support 400mgNOW Foods$20.0090$0.22
berberine-le-500mgLife Extension Berberine 500mgLife Extension$16.5060$0.28
berberine-thorne-1000mgThorne Berberine 1000mgThorne$36.0060$0.60

Boron (3-6 mg/day)

SlugProductVendorPriceServings$/Serving
boron-now-3mgNOW Boron 3mgiHerb$6.99250$0.03
boron-nutricost-3mgNutricost Boron 3mgNutricost$8.95240$0.04
boron-le-3mgLife Extension Boron 3mgLife Extension$5.25100$0.05

Calcium Alpha-Ketoglutarate (1000 mg/day)

SlugProductVendorPriceServings$/Serving
cakg-nd-500mgNootropics Depot Ca-AKG 500mgNootropics Depot$24.99180$0.14
cakg-prohealth-1000mgProHealth Longevity Ca-AKG 1000mgAmazon$34.9560$0.58

Citicoline (CDP-Choline) (250-500 mg/day)

SlugProductVendorPriceServings$/Serving
citicoline-jarrow-250mgJarrow Citicoline (CDP-Choline) 250mgiHerb$18.99120$0.16
citicoline-jarrow-250mgJarrow Citicoline (CDP-Choline) 250mgJarrow Formulas$22.95120$0.19
citicoline-le-250mgLife Extension Citicoline 250mgLife Extension$20.2560$0.34
citicoline-nd-250mgNootropics Depot Cognizin Citicoline 250mgNootropics Depot$26.9960$0.45

CoQ10 / Ubiquinol (100-300 mg/day (ubiquinol preferred for absorption))

SlugProductVendorPriceServings$/Serving
coq10-jarrow-100mgJarrow QH-absorb Ubiquinol 100mgiHerb$18.99120$0.16
coq10-jarrow-100mgJarrow QH-absorb Ubiquinol 100mgJarrow Formulas$33.95120$0.28
coq10-now-100mgNOW Ubiquinol 100mgiHerb$18.9960$0.32
coq10-now-100mgNOW Ubiquinol 100mgNOW Foods$20.0060$0.33
coq10-le-100mgLife Extension Super Ubiquinol CoQ10 100mgLife Extension$33.0060$0.55
coq10-thorne-100mgThorne CoQ10 100mgThorne$36.0060$0.60

Collagen Peptides (10-20 g/day)

SlugProductVendorPriceServings$/Serving
collagen-bulk-10gBulk Supplements Collagen PeptidesBulk Supplements$19.96100$0.20
collagen-vp-20gVital Proteins Collagen Peptides 20gAmazon$25.4928$0.91
collagen-vp-20gVital Proteins Collagen Peptides 20gVital Proteins$29.9928$1.07
collagen-gol-20gGarden of Life Grass Fed Collagen 20gGarden of Life$29.9928$1.07
collagen-momentous-15gMomentous Collagen PeptidesMomentous$39.9530$1.33

Creatine Monohydrate (3-5 g/day)

SlugProductVendorPriceServings$/Serving
creatine-nutricost-5gNutricost Creatine Monohydrate 5gNutricost$14.95200$0.07
creatine-nutricost-5gNutricost Creatine Monohydrate 5gAmazon$13.95200$0.07
creatine-now-5gNOW Creatine Monohydrate 5giHerb$18.99200$0.09
creatine-now-5gNOW Creatine Monohydrate 5gNOW Foods$20.00200$0.10
creatine-bulk-5gBulk Supplements Creatine MonohydrateBulk Supplements$21.97200$0.11
creatine-thorne-5gThorne Creatine (Creapure)Thorne$44.0090$0.49
creatine-momentous-5gMomentous Creatine Monohydrate 5g (Creapure)Momentous$37.4660$0.62

DIM (Diindolylmethane) (100-200 mg/day)

SlugProductVendorPriceServings$/Serving
dim-now-200mg-90ctNOW Foods DIM 200mg 90 CapsulesiHerb$17.4490$0.19
dim-naturesway-dimplus-120ctNature's Way DIM-Plus 120 CapsulesiHerb$15.6560$0.26
dim-thorne-hormoneadvantage-60ctThorne Hormone Advantage (DIM + SGS) 60 CapsulesiHerb$51.0060$0.85
dim-thorne-hormoneadvantage-60ctThorne Hormone Advantage (DIM + SGS) 60 CapsulesThorne$51.0060$0.85

Electrolyte Supplements (1000mg sodium, 200mg potassium, 60mg magnesium per serving (varies by product))

SlugProductVendorPriceServings$/Serving
electrolytes-lmnt-variety-12ctLMNT Electrolyte Variety Pack 12 PacketsAmazon$20.0012$1.67

Ergothioneine (5-25 mg/day)

SlugProductVendorPriceServings$/Serving
ergo-nd-5mgNootropics Depot Ergothioneine 5mgNootropics Depot$19.9960$0.33
ergo-le-5mgLife Extension Ergothioneine 5mgLife Extension$18.0030$0.60

Fiber / Psyllium Husk (5-10g/day psyllium husk)

SlugProductVendorPriceServings$/Serving
psyllium-now-caps-500mg-500ctNOW Foods Psyllium Husk Caps 500mg 500 CapsulesiHerb$11.62166$0.07
psyllium-now-powder-680gNOW Foods Psyllium Husk Powder 24oz (680g)iHerb$11.7597$0.12
psyllium-nutricost-500mg-500ctNutricost Psyllium Husk 500mg 500 CapsulesiHerb$19.95166$0.12
psyllium-now-organic-powder-340gNOW Foods Organic Psyllium Husk Powder 12oz (340g)iHerb$13.9648$0.29

Fisetin (100-500 mg/day)

SlugProductVendorPriceServings$/Serving
fisetin-le-100mgLife Extension Fisetin 100mgLife Extension$11.2560$0.19
fisetin-nd-100mgNootropics Depot Fisetin 100mgNootropics Depot$19.9960$0.33
fisetin-db-100mgDoctor's Best Fisetin 100mgAmazon$12.9930$0.43
fisetin-db-100mgDoctor's Best Fisetin 100mgiHerb$18.9930$0.63

Garlic Extract (Aged) (600-1200 mg/day aged garlic extract)

SlugProductVendorPriceServings$/Serving
garlic-kyolic-agd-300mg-200ctKyolic Aged Garlic Extract Formula 100 200 CapsulesiHerb$13.19100$0.13
garlic-kyolic-agd-300mg-300ctKyolic Aged Garlic Extract Formula 100 300 CapsulesiHerb$27.55150$0.18
garlic-kyolic-bp-formula109-160ctKyolic Aged Garlic Extract Formula 109 Blood Pressure 160 CapsulesiHerb$24.8980$0.31

Glucosamine (1500 mg/day)

SlugProductVendorPriceServings$/Serving
glucosamine-now-750mgNOW Glucosamine Sulfate 750mgiHerb$18.99240$0.08
glucosamine-jarrow-750mgJarrow Glucosamine + ChondroitinJarrow Formulas$22.95120$0.19
glucosamine-nw-1500mgNature's Way Glucosamine 1500mgNature's Way$14.9960$0.25

Glutathione (250-500 mg/day (liposomal preferred for bioavailability))

SlugProductVendorPriceServings$/Serving
glutathione-now-500mg-60ctNOW Foods Glutathione 500mg with Milk Thistle & ALA 60 CapsulesiHerb$14.6860$0.24
glutathione-jarrow-reduced-500mg-60ctJarrow Formulas Reduced Glutathione 500mg 60 CapsulesiHerb$36.7060$0.61
glutathione-thorne-sr-175mg-60ctThorne Glutathione-SR 175mg 60 CapsulesiHerb$54.0060$0.90
glutathione-pure-liposomal-375mg-30ctPure Encapsulations Liposomal Glutathione 375mg 30 SoftgelsiHerb$39.6030$1.32

Glycine (3-5 g/day)

SlugProductVendorPriceServings$/Serving
glycine-bulk-3gBulk Supplements Glycine PowderBulk Supplements$14.96333$0.04
glycine-thorne-500mgThorne GlycineThorne$18.00250$0.07
glycine-now-1000mgNOW Glycine 1000mgiHerb$8.99100$0.09
glycine-now-1000mgNOW Glycine 1000mgNOW Foods$9.99100$0.10

Green Tea Extract / EGCG (200-400 mg EGCG/day)

SlugProductVendorPriceServings$/Serving
egcg-now-400mg-180ctNOW Foods EGCg Green Tea Extract 400mg 180 CapsulesiHerb$11.62180$0.06
egcg-now-400mg-90ctNOW Foods EGCg Green Tea Extract 400mg 90 CapsulesiHerb$11.6290$0.13
egcg-lifeextension-mega-725mg-100ctLife Extension Mega Green Tea Extract Decaf 725mg 100 CapsulesiHerb$20.25100$0.20

Hyaluronic Acid (100-200 mg/day)

SlugProductVendorPriceServings$/Serving
ha-now-100mgNOW Hyaluronic Acid 100mgAmazon$16.4960$0.27
ha-le-100mgLife Extension Hyaluronic Acid 100mgLife Extension$16.5060$0.28
ha-now-100mgNOW Hyaluronic Acid 100mgiHerb$18.9960$0.32

Iron (18-36 mg/day (varies by need))

SlugProductVendorPriceServings$/Serving
iron-now-bisglycinate-18mg-120ctNOW Foods Iron 18mg 120 CapsulesiHerb$9.17120$0.08
iron-now-bisglycinate-36mg-90ctNOW Foods Iron 36mg 90 CapsulesiHerb$9.7890$0.11
iron-thorne-bisglycinate-25mg-60ctThorne Iron Bisglycinate 25mg 60 CapsulesiHerb$16.0060$0.27
iron-thorne-bisglycinate-25mg-60ctThorne Iron Bisglycinate 25mg 60 CapsulesThorne$16.0060$0.27

L-Theanine (100-400 mg/day)

SlugProductVendorPriceServings$/Serving
theanine-nd-200mgNootropics Depot L-Theanine (Suntheanine) 200mgNootropics Depot$15.99120$0.13
theanine-now-200mgNOW L-Theanine 200mgiHerb$18.99120$0.16
theanine-now-200mgNOW L-Theanine 200mgNOW Foods$20.00120$0.17
theanine-momentous-200mgMomentous L-Theanine 200mgMomentous$24.9560$0.42

Lion's Mane (500-3000 mg/day (fruiting body extract))

SlugProductVendorPriceServings$/Serving
lionsmane-bulk-500mgBulk Supplements Lion's Mane ExtractBulk Supplements$24.96500$0.05
lionsmane-now-500mgNOW Lion's Mane 500mgiHerb$18.9960$0.32
lionsmane-nd-500mgNootropics Depot Lion's Mane 8:1 Extract 500mgNootropics Depot$19.9960$0.33
lionsmane-now-500mgNOW Lion's Mane 500mgNOW Foods$20.0060$0.33

Lutein / Zeaxanthin (10-20 mg lutein + 2-4 mg zeaxanthin/day)

SlugProductVendorPriceServings$/Serving
lutein-jarrow-20mg-120ctJarrow Formulas Lutein 20mg 120 SoftgelsiHerb$17.42120$0.15
lutein-now-25mg-120ctNOW Foods Lutein & Zeaxanthin 120 SoftgelsiHerb$27.55120$0.23
lutein-now-25mg-60ctNOW Foods Lutein & Zeaxanthin 60 SoftgelsiHerb$18.3660$0.31

MSM (1000-3000 mg/day)

SlugProductVendorPriceServings$/Serving
msm-bulk-1gBulk Supplements MSM PowderBulk Supplements$17.961000$0.02
msm-jarrow-1000mgJarrow MSM 1000mgJarrow Formulas$14.95200$0.07
msm-now-1000mgNOW MSM 1000mgiHerb$18.99240$0.08
msm-now-1000mgNOW MSM 1000mgNOW Foods$20.00240$0.08

Magnesium Glycinate (200-400 mg elemental magnesium/day)

SlugProductVendorPriceServings$/Serving
magnesium-nutricost-200mgNutricost Magnesium Glycinate 200mgNutricost$13.95120$0.12
magnesium-now-200mgNOW Magnesium Glycinate 200mgAmazon$15.49120$0.13
magnesium-now-200mgNOW Magnesium Glycinate 200mgiHerb$18.99120$0.16
magnesium-now-200mgNOW Magnesium Glycinate 200mgNOW Foods$20.00120$0.17
magnesium-pe-120mgPure Encapsulations Magnesium Glycinate 120mgPure Encapsulations$25.6090$0.28
magnesium-thorne-200mgThorne Magnesium Bisglycinate 200mgThorne$28.0060$0.47

Melatonin (0.3-5 mg/day (lower doses often more effective))

SlugProductVendorPriceServings$/Serving
melatonin-now-3mgNOW Melatonin 3mgiHerb$5.99180$0.03
melatonin-now-3mgNOW Melatonin 3mgNOW Foods$6.99180$0.04
melatonin-nutricost-5mgNutricost Melatonin 5mgNutricost$8.95240$0.04
melatonin-le-3mgLife Extension Melatonin 3mgLife Extension$6.7560$0.11

Milk Thistle / Silymarin (150-600 mg silymarin/day)

SlugProductVendorPriceServings$/Serving
milkthistle-jarrow-150mg-200ctJarrow Formulas Milk Thistle 150mg 200 CapsulesJarrow Formulas$19.99200$0.10
milkthistle-now-300mg-200ctNOW Foods Milk Thistle Extract 300mg (240mg Silymarin) 200 CapsulesiHerb$21.99200$0.11
milkthistle-lifeextension-advanced-120ctLife Extension Advanced Milk Thistle 120 SoftgelsiHerb$21.00120$0.17

NAC (N-Acetylcysteine) (600-1800 mg/day)

SlugProductVendorPriceServings$/Serving
nac-now-600mgNOW NAC 600mgAmazon$15.99250$0.06
nac-nutricost-600mgNutricost NAC 600mgNutricost$12.95180$0.07
nac-now-600mgNOW NAC 600mgiHerb$18.99250$0.08
nac-now-600mgNOW NAC 600mgNOW Foods$20.00250$0.08
nac-jarrow-600mgJarrow NAC Sustain 600mgJarrow Formulas$16.95100$0.17
nac-le-600mgLife Extension NAC 600mgLife Extension$11.2560$0.19
nac-jarrow-600mgJarrow NAC Sustain 600mgiHerb$18.99100$0.19

NMN (Nicotinamide Mononucleotide) (250-1000 mg/day)

SlugProductVendorPriceServings$/Serving
nmn-nd-250mgNootropics Depot NMN 250mgNootropics Depot$34.9960$0.58
nmn-le-250mgLife Extension NAD+ Cell Regenerator (NMN) 250mgLife Extension$37.5030$1.25

Nattokinase (2000-4000 FU/day (100-200mg))

SlugProductVendorPriceServings$/Serving
nattokinase-doctorsbest-2000fu-270ctDoctor's Best Nattokinase 2000 FU 270 CapsulesiHerb$36.99270$0.14
nattokinase-now-100mg-120ctNOW Foods Nattokinase 100mg 2000 FU 120 CapsulesiHerb$18.36120$0.15
nattokinase-doctorsbest-2000fu-90ctDoctor's Best Nattokinase 2000 FU 90 CapsulesiHerb$14.9990$0.17

Niacinamide (Vitamin B3) (500-1500 mg/day)

SlugProductVendorPriceServings$/Serving
niacinamide-nutricost-500mgNutricost Niacinamide 500mgNutricost$9.95240$0.04
niacinamide-now-500mgNOW Niacinamide 500mgiHerb$6.99100$0.07
niacinamide-le-500mgLife Extension Vitamin B3 Niacinamide 500mgLife Extension$7.50100$0.07
niacinamide-now-500mgNOW Niacinamide 500mgNOW Foods$7.99100$0.08

Nicotinamide Riboside (300-1000 mg/day)

SlugProductVendorPriceServings$/Serving
nr-thorne-300mgThorne NiaCel 300mgThorne$46.0060$0.77
nr-le-300mgLife Extension NAD+ Cell Regenerator 300mgLife Extension$34.5030$1.15
nr-truniagen-300mgTRU NIAGEN 300mgAmazon$40.0030$1.33

Omega-3 (EPA/DHA) (2000-4000 mg combined EPA/DHA per day)

SlugProductVendorPriceServings$/Serving
omega3-le-superLife Extension Super Omega-3 EPA/DHALife Extension$24.75120$0.21
omega3-momentousMomentous Omega-3Momentous$34.9560$0.58
omega3-nordic-1280mgNordic Naturals Ultimate Omega 1280mgAmazon$35.4960$0.59
omega3-nordic-1280mgNordic Naturals Ultimate Omega 1280mgNordic Naturals$37.4660$0.62
omega3-thorne-coq10Thorne Omega-3 w/ CoQ10Thorne$56.0090$0.62
omega3-nordic-1280mgNordic Naturals Ultimate Omega 1280mgiHerb$37.9960$0.63

PQQ (Pyrroloquinoline Quinone) (10-20 mg/day)

SlugProductVendorPriceServings$/Serving
pqq-nd-20mgNootropics Depot PQQ 20mgNootropics Depot$24.9960$0.42
pqq-le-20mgLife Extension PQQ 20mgLife Extension$15.0030$0.50
pqq-jarrow-20mgJarrow PQQ 20mgJarrow Formulas$18.9530$0.63
pqq-jarrow-20mgJarrow PQQ 20mgiHerb$18.9930$0.63

Phosphatidylserine (100-300 mg/day)

SlugProductVendorPriceServings$/Serving
ps-now-100mg-120ctNOW Foods Phosphatidyl Serine 100mg 120 CapsulesiHerb$22.65120$0.19
ps-jarrow-100mg-120ctJarrow Formulas PS100 Phosphatidylserine 100mg 120 CapsulesiHerb$37.98120$0.32
ps-jarrow-100mg-60ct-softgelsJarrow Formulas PS100 100mg 60 SoftgelsiHerb$20.4260$0.34

Prebiotics (Inulin/GOS) (5-10 g/day (start low, increase gradually))

SlugProductVendorPriceServings$/Serving
prebiotics-bulk-inulinBulk Supplements Inulin PowderBulk Supplements$16.96200$0.08
prebiotics-now-inulinNOW Organic Inulin PowderiHerb$10.9957$0.19
prebiotics-now-inulinNOW Organic Inulin PowderNOW Foods$11.9957$0.21
prebiotics-gol-fiberGarden of Life Raw Organic FiberGarden of Life$31.1940$0.78

Probiotics (10-50 billion CFU/day)

SlugProductVendorPriceServings$/Serving
probiotics-now-10strain-25b-100ctNOW Foods Probiotic-10 25 Billion 100 CapsulesiHerb$15.73100$0.16
probiotics-now-10strain-50b-50ctNOW Foods Probiotic-10 50 Billion 50 CapsulesiHerb$20.4250$0.41
probiotics-jarrow-eps-5b-60ctJarrow Formulas Jarro-Dophilus EPS 5 Billion 60 CapsulesiHerb$27.5260$0.46

Quercetin (500-1000 mg/day)

SlugProductVendorPriceServings$/Serving
quercetin-now-500mgNOW Quercetin 500mgAmazon$16.49120$0.14
quercetin-nd-500mgNootropics Depot Quercetin 500mgNootropics Depot$17.99120$0.15
quercetin-now-500mgNOW Quercetin 500mgiHerb$18.99120$0.16
quercetin-now-500mgNOW Quercetin 500mgNOW Foods$20.00120$0.17
quercetin-le-500mgLife Extension Bio-Quercetin 500mgLife Extension$9.0030$0.30
quercetin-thorne-250mgThorne Quercetin Phytosome 250mgThorne$46.0060$0.77

Resveratrol (150-500 mg/day)

SlugProductVendorPriceServings$/Serving
resveratrol-now-200mg-120ctNOW Foods Natural Resveratrol 200mg 120 CapsulesiHerb$18.36120$0.15
resveratrol-doctorsbest-600mg-60ctDoctor's Best Trans-Resveratrol 600mg 60 CapsulesiHerb$17.9960$0.30
resveratrol-prohealth-1000mg-60ctProHealth Longevity Trans-Resveratrol Plus 1000mg 60 CapsulesiHerb$27.9730$0.93

Rhodiola Rosea (200-600 mg/day (3% rosavins extract))

SlugProductVendorPriceServings$/Serving
rhodiola-nd-500mgNootropics Depot Rhodiola Rosea 500mg (3% Rosavins)Nootropics Depot$17.9990$0.20
rhodiola-jarrow-500mgJarrow Rhodiola Rosea 500mgJarrow Formulas$14.9560$0.25
rhodiola-now-500mgNOW Rhodiola 500mgiHerb$18.9960$0.32
rhodiola-now-500mgNOW Rhodiola 500mgNOW Foods$20.0060$0.33

Saw Palmetto (160-320 mg/day (standardized extract))

SlugProductVendorPriceServings$/Serving
sawpalmetto-now-160mg-240ctNOW Foods Saw Palmetto Extract 160mg 240 SoftgelsiHerb$15.30240$0.06
sawpalmetto-now-berries-550mg-250ctNOW Foods Saw Palmetto Berries 550mg 250 CapsulesiHerb$17.14250$0.07
sawpalmetto-now-320mg-90ctNOW Foods Saw Palmetto Extract 320mg 90 SoftgelsiHerb$23.2690$0.26

Selenium (100-200 mcg/day)

SlugProductVendorPriceServings$/Serving
selenium-now-200mcgNOW Selenium 200mcgiHerb$8.99180$0.05
selenium-le-200mcgLife Extension Super Selenium ComplexLife Extension$10.50100$0.10
selenium-thorne-200mcgThorne Selenium 200mcgThorne$12.0060$0.20

Spermidine (1-6 mg/day)

SlugProductVendorPriceServings$/Serving
spermidine-le-autophagyLife Extension Geroprotect Autophagy RenewLife Extension$19.5030$0.65
spermidine-slife-1mgspermidineLIFE 1mgAmazon$49.9560$0.83

Sulforaphane / Broccoli Sprout Extract (10-50 mg sulforaphane/day (or equivalent SGS))

SlugProductVendorPriceServings$/Serving
sulforaphane-swanson-400mcg-60ctSwanson Sulforaphane from Broccoli Sprout Extract 400mcg 60 CapsulesiHerb$7.6460$0.13
sulforaphane-jarrow-broccomax-120ctJarrow Formulas BroccoMax 35mg SGS 120 CapsulesiHerb$23.85120$0.20
sulforaphane-jarrow-broccomax-120ctJarrow Formulas BroccoMax 35mg SGS 120 CapsulesJarrow Formulas$43.99120$0.37
sulforaphane-thorne-crucerasgs-60ctThorne Broccoli Seed Extract (Crucera-SGS) 60 CapsulesThorne$38.0060$0.63

TMG (Trimethylglycine) (500-1500 mg/day)

SlugProductVendorPriceServings$/Serving
tmg-now-1000mgNOW TMG 1000mgAmazon$11.49100$0.11
tmg-le-500mgLife Extension TMG 500mgLife Extension$10.1360$0.17
tmg-now-1000mgNOW TMG 1000mgiHerb$18.99100$0.19
tmg-thorne-1000mgThorne TMG 1000mgThorne$22.0060$0.37

Taurine (1-3 g/day)

SlugProductVendorPriceServings$/Serving
taurine-nutricost-1000mgNutricost Taurine 1000mgNutricost$12.95400$0.03
taurine-bulk-1gBulk Supplements Taurine PowderBulk Supplements$20.97500$0.04
taurine-now-1000mgNOW Taurine 1000mgiHerb$18.99250$0.08
taurine-now-1000mgNOW Taurine 1000mgNOW Foods$20.00250$0.08
taurine-le-1000mgLife Extension Taurine 1000mgLife Extension$9.7590$0.11

Tetrahydrocurcumin (250-500 mg/day)

SlugProductVendorPriceServings$/Serving
thc-nd-250mgNootropics Depot Tetrahydrocurcumin 250mgNootropics Depot$21.99120$0.18
curcumin-le-500mgLife Extension Curcumin Elite 500mgLife Extension$22.5060$0.38

Tributyrin (300-1000 mg/day)

SlugProductVendorPriceServings$/Serving
tributyrin-le-250mgLife Extension Florassist GI 250mgLife Extension$18.7530$0.63
tributyrin-bodybio-500mgBodyBio Tributyrin 500mgAmazon$49.9560$0.83

Turmeric / Curcumin (500-1000 mg/day (enhanced bioavailability form))

SlugProductVendorPriceServings$/Serving
curcumin-now-bioperine-665mg-90ctNOW Foods Turmeric Curcumin with BioPerine 90 CapsulesiHerb$14.6990$0.16
curcumin-now-phytosome-500mg-60ctNOW Foods Curcumin Phytosome with Meriva 500mg 60 CapsulesiHerb$20.8160$0.35
curcumin-thorne-phytosome-500mg-60ctThorne Curcumin Phytosome (Meriva) 500mg 60 CapsulesiHerb$36.0060$0.60
curcumin-thorne-phytosome-1000mg-120ctThorne Curcumin Phytosome (Meriva) 1000mg 120 CapsulesThorne$64.0060$1.07

Urolithin A (500-1000 mg/day)

SlugProductVendorPriceServings$/Serving
urolithina-timeline-mitopure-500mg-60ctTimeline Mitopure Urolithin A 500mg 60 SoftgelsAmazon$125.0030$4.17

Vitamin A (3000-7500 mcg RAE (10,000-25,000 IU)/day)

SlugProductVendorPriceServings$/Serving
vitamina-now-25000iu-250ctNOW Foods Vitamin A 25000 IU 250 SoftgelsiHerb$13.46250$0.05
vitamina-now-25000iu-100ctNOW Foods Vitamin A 25000 IU 100 SoftgelsiHerb$6.72100$0.07

Vitamin B12 (Methylcobalamin) (1000-5000 mcg/day)

SlugProductVendorPriceServings$/Serving
b12-now-5000mcgNOW Methyl B-12 5000mcgAmazon$11.99120$0.10
b12-now-5000mcgNOW Methyl B-12 5000mcgiHerb$18.99120$0.16
b12-thorne-1000mcgThorne Methylcobalamin 1000mcgThorne$14.0060$0.23
b12-jarrow-5000mcgJarrow Methyl B-12 5000mcgJarrow Formulas$13.9560$0.23

Vitamin B6 (P-5-P) (25-100 mg/day as P-5-P)

SlugProductVendorPriceServings$/Serving
b6-now-50mgNOW P-5-P 50mgAmazon$9.9990$0.11
b6-now-50mgNOW P-5-P 50mgiHerb$11.9990$0.13
b6-thorne-180mgThorne Pyridoxal 5'-Phosphate 180mgThorne$18.0060$0.30

Vitamin C (500-2000 mg/day)

SlugProductVendorPriceServings$/Serving
vitc-now-1000mgNOW Vitamin C-1000iHerb$18.99250$0.08
vitc-now-1000mgNOW Vitamin C-1000NOW Foods$20.00250$0.08
vitc-le-1000mgLife Extension Vitamin C 1000mgLife Extension$9.0060$0.15
vitc-thorne-500mgThorne Vitamin C with FlavonoidsThorne$15.0090$0.17
vitc-gol-500mgGarden of Life Vitamin Code Raw CGarden of Life$24.99120$0.21

Vitamin D3 (2000-5000 IU/day)

SlugProductVendorPriceServings$/Serving
d3-now-5000iuNOW Vitamin D3 5000 IUAmazon$10.49240$0.04
d3-now-5000iuNOW Vitamin D3 5000 IUiHerb$11.99240$0.05
d3-now-5000iuNOW Vitamin D3 5000 IUNOW Foods$12.99240$0.05
d3-nutricost-5000iuNutricost Vitamin D3 5000 IUNutricost$10.99240$0.05
d3-thorne-5000iuThorne Vitamin D-5000Thorne$14.0060$0.23
d3-pe-5000iuPure Encapsulations Vitamin D3 5000 IUPure Encapsulations$18.2060$0.30

Vitamin E (Mixed Tocopherols) (200-400 IU/day (mixed tocopherols preferred over alpha-only))

SlugProductVendorPriceServings$/Serving
vitamine-now-200iu-mixed-100ctNOW Foods Vitamin E-200 with Mixed Tocopherols 100 SoftgelsiHerb$8.71100$0.09
vitamine-now-400iu-mixed-250ctNOW Foods Vitamin E-400 with Mixed Tocopherols 250 SoftgelsiHerb$30.61250$0.12
vitamine-lifeextension-gamma-60ctLife Extension Gamma E Mixed Tocopherols & Tocotrienols 60 SoftgelsiHerb$27.0060$0.45

Vitamin K2 (MK-7) (100-200 mcg/day)

SlugProductVendorPriceServings$/Serving
k2-now-100mcgNOW Vitamin K2 MK-7 100mcgAmazon$12.49120$0.10
k2-jarrow-90mcgJarrow MK-7 90mcgJarrow Formulas$16.95120$0.14
k2-now-100mcgNOW Vitamin K2 MK-7 100mcgiHerb$18.99120$0.16
k2-jarrow-90mcgJarrow MK-7 90mcgiHerb$18.99120$0.16
k2-le-200mcgLife Extension Super K 200mcgLife Extension$24.0090$0.27
k2-thorne-100mcgThorne Vitamin K2 (MK-7) 100mcgThorne$15.0030$0.50

Zinc (15-50 mg/day)

SlugProductVendorPriceServings$/Serving
zinc-now-50mgNOW Zinc Picolinate 50mgiHerb$8.99120$0.07
zinc-le-50mgLife Extension Zinc Caps 50mgLife Extension$6.7590$0.07
zinc-lifeextension-caps-50mg-90ctLife Extension Zinc Caps 50mg 90 CapsulesiHerb$6.0790$0.07
zinc-now-50mgNOW Zinc Picolinate 50mgNOW Foods$9.99120$0.08
zinc-now-picolinate-50mg-120ctNOW Foods Zinc Picolinate 50mg 120 CapsulesiHerb$11.01120$0.09
zinc-thorne-30mgThorne Zinc Picolinate 30mgThorne$20.0060$0.33
zinc-thorne-picolinate-30mg-60ctThorne Zinc Picolinate 30mg 60 CapsulesiHerb$20.0060$0.33

Trusted Vendors (16 vendors)

Each vendor is rated on a 1-10 trust scale. Use the slug to lock a cart to a specific vendor with ?vendor=SLUG.

SlugNameTrust
thorneThorne9/10
life-extensionLife Extension9/10
nootropics-depotNootropics Depot9/10
pure-encapsulationsPure Encapsulations9/10
iherbiHerb8/10
jarrowJarrow Formulas8/10
nordic-naturalsNordic Naturals8/10
momentousMomentous8/10
now-foodsNOW Foods7/10
swansonSwanson Vitamins7/10
vital-proteinsVital Proteins7/10
garden-of-lifeGarden of Life7/10
natures-wayNature's Way7/10
bulk-supplementsBulk Supplements6/10
nutricostNutricost6/10
amazonAmazon2/10

Site Pages

  • / Homepage with search bar
  • /protocols Biohacker protocols (Johnson, Attia, Huberman, Greenfield, Patrick)
  • /ingredients All 64 supplements
  • /trust-methodology How we score vendors
  • /why-not-amazon Amazon supplement risks
  • /how-we-make-money Revenue transparency
  • /ingredients/5-mthf-- 5-MTHF (Active Folate) (from $8.95)
  • /ingredients/alpha-gpc-- Alpha-GPC (from $18.99)
  • /ingredients/alpha-lipoic-acid-- Alpha-Lipoic Acid (from $10.00)
  • /ingredients/apigenin-- Apigenin (from $8.99)
  • /ingredients/ashwagandha-- Ashwagandha (from $14.99)
  • /ingredients/astaxanthin-- Astaxanthin (from $10.50)
  • /ingredients/b-complex-- B-Complex (from $8.10)
  • /ingredients/berberine-- Berberine (from $14.95)
  • /ingredients/boron-- Boron (from $5.25)
  • /ingredients/calcium-akg-- Calcium Alpha-Ketoglutarate (from $24.99)
  • /ingredients/citicoline-- Citicoline (CDP-Choline) (from $18.99)
  • /ingredients/coq10-- CoQ10 / Ubiquinol (from $18.99)
  • /ingredients/collagen-- Collagen Peptides (from $19.96)
  • /ingredients/creatine-- Creatine Monohydrate (from $13.95)
  • /ingredients/dim-- DIM (Diindolylmethane) (from $15.65)
  • /ingredients/electrolytes-- Electrolyte Supplements (from $20.00)
  • /ingredients/ergothioneine-- Ergothioneine (from $18.00)
  • /ingredients/psyllium-husk-- Fiber / Psyllium Husk (from $11.62)
  • /ingredients/fisetin-- Fisetin (from $11.25)
  • /ingredients/aged-garlic-- Garlic Extract (Aged) (from $13.19)
  • /ingredients/glucosamine-- Glucosamine (from $14.99)
  • /ingredients/glutathione-- Glutathione (from $14.68)
  • /ingredients/glycine-- Glycine (from $8.99)
  • /ingredients/egcg-- Green Tea Extract / EGCG (from $11.62)
  • /ingredients/hyaluronic-acid-- Hyaluronic Acid (from $16.49)
  • /ingredients/iron-- Iron (from $9.17)
  • /ingredients/l-theanine-- L-Theanine (from $15.99)
  • /ingredients/lions-mane-- Lion's Mane (from $18.99)
  • /ingredients/lutein-zeaxanthin-- Lutein / Zeaxanthin (from $17.42)
  • /ingredients/msm-- MSM (from $14.95)
  • /ingredients/magnesium-glycinate-- Magnesium Glycinate (from $13.95)
  • /ingredients/melatonin-- Melatonin (from $5.99)
  • /ingredients/milk-thistle-- Milk Thistle / Silymarin (from $19.99)
  • /ingredients/nac-- NAC (N-Acetylcysteine) (from $11.25)
  • /ingredients/nmn-- NMN (Nicotinamide Mononucleotide) (from $34.99)
  • /ingredients/nattokinase-- Nattokinase (from $14.99)
  • /ingredients/niacinamide-- Niacinamide (Vitamin B3) (from $6.99)
  • /ingredients/nicotinamide-riboside-- Nicotinamide Riboside (from $34.50)
  • /ingredients/omega-3-- Omega-3 (EPA/DHA) (from $24.75)
  • /ingredients/pqq-- PQQ (Pyrroloquinoline Quinone) (from $15.00)
  • /ingredients/phosphatidylserine-- Phosphatidylserine (from $20.42)
  • /ingredients/prebiotics-- Prebiotics (Inulin/GOS) (from $10.99)
  • /ingredients/probiotics-- Probiotics (from $15.73)
  • /ingredients/quercetin-- Quercetin (from $9.00)
  • /ingredients/resveratrol-- Resveratrol (from $17.99)
  • /ingredients/rhodiola-- Rhodiola Rosea (from $14.95)
  • /ingredients/saw-palmetto-- Saw Palmetto (from $15.30)
  • /ingredients/selenium-- Selenium (from $8.99)
  • /ingredients/spermidine-- Spermidine (from $19.50)
  • /ingredients/sulforaphane-- Sulforaphane / Broccoli Sprout Extract (from $7.64)
  • /ingredients/tmg-- TMG (Trimethylglycine) (from $10.13)
  • /ingredients/taurine-- Taurine (from $9.75)
  • /ingredients/tetrahydrocurcumin-- Tetrahydrocurcumin (from $21.99)
  • /ingredients/tributyrin-- Tributyrin (from $18.75)
  • /ingredients/curcumin-- Turmeric / Curcumin (from $14.69)
  • /ingredients/urolithin-a-- Urolithin A (from $125.00)
  • /ingredients/vitamin-a-- Vitamin A (from $6.72)
  • /ingredients/vitamin-b12-- Vitamin B12 (Methylcobalamin) (from $11.99)
  • /ingredients/vitamin-b6-- Vitamin B6 (P-5-P) (from $9.99)
  • /ingredients/vitamin-c-- Vitamin C (from $9.00)
  • /ingredients/vitamin-d3-- Vitamin D3 (from $10.49)
  • /ingredients/vitamin-e-- Vitamin E (Mixed Tocopherols) (from $8.71)
  • /ingredients/vitamin-k2-- Vitamin K2 (MK-7) (from $12.49)
  • /ingredients/zinc-- Zinc (from $6.07)

Key Interaction Rules

  • Vitamin D3 MUST be paired with Vitamin K2 (prevents arterial calcification)
  • NR/NMN should be paired with TMG (methyl donor replacement)
  • Quercetin inhibits CYP3A4 — flag if user takes statins or cyclosporine
  • Vitamin K2 is CONTRAINDICATED with warfarin
  • Magnesium should be separated from antibiotics by 2+ hours
  • Senolytic protocol (quercetin + fisetin) is intermittent: 2 days/month, not daily
  • High-dose omega-3 may increase bleeding risk with anticoagulants
  • NMN: FDA classified as IND in 2022 — some vendors still sell, note regulatory status
  • Ashwagandha may interact with thyroid medications
  • Berberine may interact with metformin and CYP3A4 substrates

The Longevity Agent is a supplement price comparison engine. We earn affiliate commissions. We always show cheapest options regardless of commission. This is not medical advice.