Price check · October 2026

TB-500 prices

A synthetic peptide corresponding to a segment of thymosin beta-4, a 43-amino-acid protein. Listed by most suppliers as a lyophilized powder in 5 mg and 10 mg vials.

42 suppliers · 105 listings · prices read October 2026 · Editorial scores, not user reviews

TB-500 turns up at 42 of the suppliers we rate, 105 listings between them once you count every size. For the 5 mg vial most shops carry, expect to pay about $48.49; the lowest price we found was $22.80 at Trident Peptide UK, which scores 3.5 with our editors but shows no certificate on the product page. The 10 mg size runs about $72.50, $31.32 at the low end. That bottom price is well under half the typical figure, so read the certificate before you look at the cart total.

5 mg · most common$48.49typical of 30 · from $22.80

10 mg$72.50typical of 30 · from $31.32

Every TB-500 listing we found

26 of 105 show a certificate on the page (25%). Pricing is 10% of the score; how we score.

Download the table

Supplier	Listing	Size	Price	Certificate
Trident Peptide UKtridentpeptide.com 3.5	TB-500 5mg	5 mg	$22.80listed £17.95$4.56/mg	Not on the page	Open
Eternal Peptideseternalpeptides.com 2.2	TB-500	5 mg	$25.99$5.20/mg	Not on the page	Open
Geo Peptidesgeopeptides.com 5.7	TB-500 Thymosin Beta 4 5mg (USA)	5 mg	$31.99$6.40/mg	Not on the page	Open
Modern Aminosmodernaminos.com 1.7	TB-500 (Thymosin Beta-4) - 5MGOut of stock	5 mg	$34$6.80/mg	Not on the page	Open
Swiss Chemsswisschems.is 5.9	TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 5mg 1 vial	5 mg	$35.16$7.03/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Peptide Vial – 5mg vial	5 mg	$35.56listed £28$7.11/mg	Not on the page	Open
Liberty Peptideslibertypeptides.com 6.1	TB-500 (Thymosin Beta-4) 5mg	5 mg	$38$7.60/mg	On the page	Open
Receptor Chemreceptorchem.co.uk 6.0	TB500 5mg	5 mg	$38.09listed £29.99$7.62/mg	Not on the page	Open
Amino Asylumaminoasylumofficial.com 4.2	TB-500 5mg \| Amino Asylum Research Peptide	5 mg	$39.99$8.00/mg	Not on the page	Open
NuScience Peptidesnusciencepeptides.com 5.4	TB500 Peptide - Research-Grade Thymosin Beta-4 - 5mg \| 10mg - 5mg	5 mg	$39.99$8.00/mg	Not on the page	Open
UK Peptidesuk-peptides.com 5.4	Thymosin Beta 4 5mg TB500	5 mg	$41.91listed £33$8.38/mg	On the page	Open
Blue Sky Peptideblueskypeptide.com 6.1	Thymosin Beta 4 (TB500) 5mg	5 mg	$43.97$8.79/mg	Not on the page	Open
Pure Peptide Labspurepeptidelabs.shop 6.9	TB-500 5mg	5 mg	$44.95$8.99/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Peptide Vial – 5mg vial kit_bac water & needles	5 mg	$46.96listed £36.98$9.39/mg	Not on the page	Open
Receptor Chemreceptorchem.co.uk 6.0	TB500 (TB4 – Thymosin Beta-4) 5mg	5 mg	$46.98listed £36.99$9.40/mg	Not on the page	Open
Loti Labslotilabs.com 5.7	TB-500 5mg (Thymosin Beta 4 Fragment)	5 mg	$49.99$10.00/mg	Not on the page	Open
Evolve Peptidesevolvepeptides.com 6.8	TB-500 (5mg)	5 mg	$50$10.00/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE 2MG/5MG/10MG VIAL - 5 Milligrams Vial	5 mg	$50.99$10.20/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE - 5 Milligrams Vial	5 mg	$50.99$10.20/mg	Not on the page	Open
Ascension Peptidesascensionpeptides.com 7.4	TB-500 (5MG)	5 mg	$54$10.80/mg	On the page	Open
Extreme Peptidesextremepeptides.com 5.4	Thymosin Beta-4 — Full-Length (43 aa; TB-500) 5mg	5 mg	$59.99$12.00/mg	Not on the page	Open
Paramount Peptidesparamountpeptides.com 7.2	Thymosin Beta 4 (TB500) (5mg)	5 mg	$60$12.00/mg	On the page	Open
Enhanced Peptidesenhancedpeptides.com 4.6	Thymosin Beta 4 (TB500) - 5mg	5 mg	$65$13.00/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE LIQUID SPRAY 15ML BOTTLE - 5mg Liquid Spray Solution 15mL Bottle	5 mg	$65.99$13.20/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE - 1 (5mg) Peptide Vial With Liquid Spray Solution	5 mg	$65.99$13.20/mg	Not on the page	Open
Sports Technology Labssportstechnologylabs.com 7.1	TB-500 5 mg	5 mg	$69.99$14.00/mg	On the page	Open
Biotech Peptidesbiotechpeptides.com 6.4	TB-500 (Thymosin Beta-4) (5mg)	5 mg	$72$14.40/mg	On the page	Open
Core Peptidescorepeptides.com 7.6	TB-500 (Thymosin Beta 4) - 5MG / 10MG - 5mg	5 mg	$78$15.60/mg	On the page	Open
Alpha Peptidesalpha-peptides.com 6.8	TB-500 – MG Amount: 10 MGOut of stock	10 mg	$31.32$3.13/mg	On the page	Open
Alpha Labs Peptidesgoalphalabs.com 6.7	TB-500 (10mg)	10 mg	$34.99$3.50/mg	On the page	Open
Swiss Chemsswisschems.is 5.9	TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 10mg 1 vial	10 mg	$42.36$4.24/mg	Not on the page	Open
Eternal Peptideseternalpeptides.com 2.2	TB-500	10 mg	$47.99$4.80/mg	Not on the page	Open
Receptor Chemreceptorchem.co.uk 6.0	TB500 10mg	10 mg	$54.60listed £42.99$5.46/mg	Not on the page	Open
Modern Aminosmodernaminos.com 1.7	TB-500 (Thymosin Beta-4) - 10MG	10 mg	$59$5.90/mg	Not on the page	Open
Koi Peptideskoipeptides.com 7.1	TB-500 (Thymosin Beta-4) 10mg	10 mg	$59.95$6.00/mg	On the page	Open
Peptide Crafterspeptidecrafters.com 3.9	TB-500 – Thymosin Beta-4 (10mg)	10 mg	$60$6.00/mg	Not on the page	Open
Verified Peptidesverifiedpeptides.com 6.4	TB-500 Peptide (TB4) 10MG	10 mg	$62$6.20/mg	On the page	Open
Atomik Labzatomiklabz.com 4.0	TB-500 (Thymosin Beta-4) (43 AA) – 10mg	10 mg	$65$6.50/mg	On the page	Open
Prime Peptidesprimepeptides.co 5.9	TB-500 (TB4) - 10mg	10 mg	$65$6.50/mg	On the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Peptide Vial – 10mg vial	10 mg	$66.22listed £52.14$6.62/mg	Not on the page	Open
Paramount Peptidesparamountpeptides.com 7.2	Thymosin Beta 4 (TB500) (10mg)	10 mg	$68$6.80/mg	On the page	Open
Skye Peptidesskyepeptides.com 2.7	TB-500 (Thymosin Beta-4)(43 aa) - 10 mg	10 mg	$69$6.90/mg	Not on the page	Open
Polaris Peptidespolarispeptides.com 3.1	TB-500 10mg	10 mg	$70$7.00/mg	Not on the page	Open
NuScience Peptidesnusciencepeptides.com 5.4	TB500 Peptide - Research-Grade Thymosin Beta-4 - 5mg \| 10mg - 10mg	10 mg	$74.99$7.50/mg	Not on the page	Open
Receptor Chemreceptorchem.co.uk 6.0	TB500 (TB4 – Thymosin Beta-4) 10mg	10 mg	$76.19listed £59.99$7.62/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Peptide Vial – 10mg vial kit_bac water & needles	10 mg	$77.62listed £61.12$7.76/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE 2MG/5MG/10MG VIAL - 10 Milligrams Vial	10 mg	$85.99$8.60/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE - 10 Milligrams Vial	10 mg	$85.99$8.60/mg	Not on the page	Open
Pure Peptide Labspurepeptidelabs.shop 6.9	TB-500 10mg	10 mg	$89.95$9.00/mg	Not on the page	Open
Evolve Peptidesevolvepeptides.com 6.8	TB-500 (10mg)	10 mg	$90$9.00/mg	On the page	Open
Licensed Peptideslicensedpeptides.com 7.9	TB-500 (Thymosin Beta-4) 10mg - 10mg, 1 pack	10 mg	$99.99$10.00/mg	Not on the page	Open
Research Peptidesresearchpeptides.com 3.9	Thymosin Beta-4 (TB-500) 10mg	10 mg	$99.99$10.00/mg	On the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE LIQUID SPRAY 15ML BOTTLE - 10mg Liquid Spray Solution 15mL Bottle	10 mg	$100.99$10.10/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE - 1 (10mg) Peptide Vial With Liquid Spray Solution	10 mg	$100.99$10.10/mg	Not on the page	Open
Enhanced Peptidesenhancedpeptides.com 4.6	Thymosin Beta 4 (TB500) - 10mg	10 mg	$105$10.50/mg	Not on the page	Open
Biotech Peptidesbiotechpeptides.com 6.4	TB-500 (Thymosin Beta-4) (10mg)	10 mg	$124$12.40/mg	On the page	Open
Core Peptidescorepeptides.com 7.6	TB-500 (Thymosin Beta 4) - 5MG / 10MG - 10mg	10 mg	$140$14.00/mg	On the page	Open
BioLongevity Labsbiolongevitylabs.com 6.9	TB-500 (10mg)	10 mg	$164.97$16.50/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Peptide Vial – 2mg vial	2 mg	$17.40listed £13.7$8.70/mg	Not on the page	Open
Blue Sky Peptideblueskypeptide.com 6.1	Thymosin Beta 4 (TB500) 2mg	2 mg	$19.77$9.89/mg	Not on the page	Open
UK Peptidesuk-peptides.com 5.4	Thymosin Beta 4 2mg (TB500)	2 mg	$21.53listed £16.95$10.77/mg	On the page	Open
Swiss Chemsswisschems.is 5.9	TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 2mg 1 vial	2 mg	$23.96$11.98/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Peptide Vial – 2mg vial kit_bac water & needles	2 mg	$28.80listed £22.68$14.40/mg	Not on the page	Open
Loti Labslotilabs.com 5.7	Thymosin Beta 4 (TB-500) 2mg	2 mg	$29.99$15.00/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE 2MG/5MG/10MG VIAL - 2 Milligrams Vial	2 mg	$33.99$17.00/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE - 2 Milligrams Vial	2 mg	$33.99$17.00/mg	Not on the page	Open
Peptide Prospeptidepros.net 6.7	TB-500 (Thymosin B4) 2mg	2 mg	$37.25$18.63/mg	Not on the page	Open
Elite Peptideselitepeptides.com 3.2	Thymosin Beta 4 2mg (Buy 1 Get 1 Free)	2 mg	$39.99$20.00/mg	Not on the page	Open
Extreme Peptidesextremepeptides.com 5.4	Thymosin Beta-4 — Full-Length (43 aa; TB-500) 2mg	2 mg	$39.99$20.00/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE LIQUID SPRAY 15ML BOTTLE - 2mg Liquid Spray Solution 15mL Bottle	2 mg	$48.99$24.50/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	TB-500 THYMOSIN BETA-4 PEPTIDE - 1 (2mg) Peptide Vial With Liquid Spray Solution	2 mg	$48.99$24.50/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Pre-Mixed Pen 5mg Peptide – Cartridge: 2 pre-mixed cartridgesbulk	5 mg	$77.67listed £61.16$15.53/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Pre-Mixed Pen 5mg Peptide – Cartridge: 3 pre-mixed cartridgesbulk	5 mg	$104.86listed £82.57$20.97/mg	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	THYMOSIN BETA-4 (Tβ4) PEPTIDE LIQUID SPRAY 30ML BOTTLE (500MCG/ML, 15MG TOTAL)	15 mg	$129.99$8.67/mg	Not on the page	Open
Paramount Peptidesparamountpeptides.com 7.2	Thymosin Beta 4 (TB500) (20mg)	20 mg	$125$6.25/mg	Not on the page	Open
Atomik Labzatomiklabz.com 4.0	TB-500 (Thymosin Beta-4) (43 AA) – 20mg	20 mg	$130$6.50/mg	On the page	Open
Skye Peptidesskyepeptides.com 2.7	TB-500 (Thymosin Beta-4)(43 aa) - 25 mg	25 mg	$129$5.16/mg	Not on the page	Open
US Peptidesuspeptides.com 3.2	TB-500 (Thymosin Beta-4)	Size not stated	$51.99	Not on the page	Open
Peptide Warehousepeptide-warehouse.com 6.2	TB-500	Size not stated	$54.99	On the page	Open
Verified Peptidesverifiedpeptides.com 6.4	Thymosin Beta-4	Size not stated	$62	Not on the page	Open
USA Peptidesusapeptides.com 3.0	TB-500 Injection	Size not stated	$125	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Pre-Mixed Pen 5mg Peptide – Cartridge: 1 pre-mixed cartridgepen	5 mg	$38.84listed £30.58$7.77/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Pre-Mixed Pen 5mg Peptide – Cartridge: 1 Pre Mixed Cartridge and Kitpen	5 mg	$73.13listed £57.58$14.63/mg	Not on the page	Open
Alpha Labs Peptidesgoalphalabs.com 6.7	TB-500 (10mg) (10 Vials)bulk	10 mg × 10	$28each · $279.99 the pack$2.80/mg	On the page	Open
Atomik Labzatomiklabz.com 4.0	BULK PACK TB-500 (Thymosin Beta-4) (43 AA) – 10mg (10 VIALS)bulk	10 mg × 10	$58.50each · $585 the pack$5.85/mg	On the page	Open
American Research Pensamericanresearchpens.com 4.6	TB-500 10 mgpen	10 mg	$104.99$10.50/mg	Not on the page	Open
Swiss Chemsswisschems.is 5.9	TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 2mg 10 vialsbulk	20 mg × 10	$26.96each · $269.55 the pack$13.48/mg	Not on the page	Open
Atomik Labzatomiklabz.com 4.0	BULK PACK TB-500 (Thymosin Beta-4) (43 AA) – 20mg (10 VIALS)bulk	20 mg × 10	$117each · $1170 the pack$5.85/mg	On the page	Open
Licensed Peptideslicensedpeptides.com 7.9	TB-500 (Thymosin Beta-4) 10mg - 10mg, 3 packOut of stock	30 mg × 3	$83.38each · $250.14 the pack$8.34/mg	Not on the page	Open
Swiss Chemsswisschems.is 5.9	TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 5mg 10 vialsbulk	50 mg × 10	$35.16each · $351.60 the pack$7.03/mg	Not on the page	Open
Licensed Peptideslicensedpeptides.com 7.9	TB-500 (Thymosin Beta-4) 10mg - 10mg, 5 packOut of stock	50 mg × 5	$70.93each · $354.65 the pack$7.09/mg	Not on the page	Open
Nexaphnexaph.com 6.4	TB4 10mg (10 vials/Kit)	100 mg × 10	$25.10each · $251 the pack$2.51/mg	Not on the page	Open
Swiss Chemsswisschems.is 5.9	TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 10mg 10 vialsbulk	100 mg × 10	$42.63each · $426.30 the pack$4.26/mg	Not on the page	Open
Licensed Peptideslicensedpeptides.com 7.9	TB-500 (Thymosin Beta-4) 10mg (10 vials)Out of stock	100 mg × 10	$58.50each · $584.95 the pack$5.85/mg	On the page	Open
Licensed Peptideslicensedpeptides.com 7.9	TB-500 (Thymosin Beta-4) 10mg - 10mg, 10 packOut of stock	100 mg × 10	$58.50each · $584.95 the pack$5.85/mg	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Nasal Spray – 15mlnasal	Size not stated	$27.56listed £21.7	Not on the page	Open
Alpha Labs Peptidesgoalphalabs.com 6.7	TB-500 Liquid Spraynasal	Size not stated	$38.49	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Nasal Spray – 30mlnasal	Size not stated	$48.77listed £38.4	Not on the page	Open
Amino Asylumaminoasylumofficial.com 4.2	TB-500 Spray \| Amino Asylum Research Peptidenasal	Size not stated	$64.99	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Nasal Spray – 4 x 15ml (Bulk Buy)nasal	Size not stated	$93.70listed £73.78	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	Thymosin Beta-4 Fragment Capsules – 60 Capsulescapsule	Size not stated	$146.05listed £115	Not on the page	Open
Umbrella Labsumbrellalabs.is 5.9	THYMOSIN BETA-4 (Tβ4) PEPTIDE POWDER (60 CAPSULES) (250MCG/CAPSULE, 15MG TOTAL BOTTLE)capsule	Size not stated	$149.99	On the page	Open
Direct Peptidesdirect-peptides.com 5.0	TB500 Nasal Spray – 4 x 30ml (Bulk Buy)nasal	Size not stated	$165.81listed £130.56	Not on the page	Open
Swiss Chemsswisschems.is 5.9	TB-500 (0.5mg/capsule), 60 Capsulescapsule	Size not stated	$254.95	Not on the page	Open
Direct Peptidesdirect-peptides.com 5.0	Thymosin Beta-4 Fragment Capsules – 60 Capsules Twin Packcapsule	Size not stated	$262.89listed £207	Not on the page	Open

Prices are what the product page showed during our October 2026 check, before coupons and shipping. Pounds were converted to dollars at an approximate rate; the listed figure is shown beside it. The small per-milligram figure is for comparing odd sizes, not for shopping by. Every listing is sold for laboratory research use only. Spotted a change? Tell us.

Questions

Why does a 5 mg vial of TB-500 cost $22.80 at one shop and far more at another?

Part of it is paperwork: a shop paying an outside laboratory for every lot has a cost the cheapest shop may not. Part of it is volume. And part of it is what each shop thinks you will pay. The typical price tells you what the market has settled on; the score tells you what, if anything, the extra money buys.

Is the cheapest TB-500 listing safe to order?

We cannot tell you that from a price list, and neither can anyone else. What we can tell you is whether the shop lets you open a certificate before you pay, whether it has a public record worth worrying about, and how it scores against the field. 26 of the 105 listings here show a certificate right on the product page, which is the least you should ask for.

How current are these prices?

Each one was read from the supplier's own product page during our October 2026 check, before coupons and shipping. Shops move prices without telling anyone, so confirm in the cart. Prices listed in pounds were converted to dollars at an approximate rate. The whole table is yours to download at /data/prices.csv.