49 suppliers scored7 FDA warning letters tracked8 closures on recordUpdated October 2026 · How scoring works
Peptide Ranking
Synthetic peptide fragment

TB-500

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.

Also listed as: Thymosin Beta-4 fragment

38suppliers listing it
88priced listings
$8.99median per mg
$3.13lowest per mg
27certificates on file

Price by size

SizeListingsMedian priceLowest priceLowest atMedian $/mg
5 mg30$48.49$22.80Trident Peptide UK · listing · listed in GBP$9.70
10 mg30$72.50$31.32Alpha Peptides · listing$7.25

All listings

SupplierScoreListingSizePrice$/mgCOA on page
Nexaph63/100TB4 10mg (10 vials/Kit)
vial
100 mg$251
10 units · $25.10 each
$2.51NoView listing
Alpha Labs Peptides68/100TB-500 (10mg) (10 Vials)
bulk
10 mg$280
10 units · $28.00 each
$2.80YesView listing
Alpha Peptides71/100TB-500 – MG Amount: 10 MG
vial · out of stock
10 mg$31.32$3.13YesView listing
Alpha Labs Peptides68/100TB-500 (10mg)
vial
10 mg$34.99$3.50YesView listing
Swiss Chems59/100TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 10mg 1 vial
vial
10 mg$42.36$4.24NoView listing
Swiss Chems59/100TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 10mg 10 vials
bulk
100 mg$426
10 units · $42.63 each
$4.26NoView listing
Trident Peptide UK29/100TB-500 5mg
vial · listed in GBP
5 mg$22.80$4.56NoView listing
Eternal Peptides22/100TB-500
vial
10 mg$47.99$4.80NoView listing
Skye Peptides23/100TB-500 (Thymosin Beta-4)(43 aa) - 25 mg
vial
25 mg$129$5.16NoView listing
Eternal Peptides22/100TB-500
vial
5 mg$25.99$5.20NoView listing
Receptor Chem50/100TB500 10mg
vial · listed in GBP
10 mg$54.60$5.46NoView listing
Atomik Labz39/100BULK PACK TB-500 (Thymosin Beta-4) (43 AA) – 10mg (10 VIALS)
bulk
10 mg$585
10 units · $58.50 each
$5.85YesView listing
Licensed Peptides84/100TB-500 (Thymosin Beta-4) 10mg (10 vials)
vial · out of stock
100 mg$585
10 units · $58.50 each
$5.85YesView listing
Licensed Peptides84/100TB-500 (Thymosin Beta-4) 10mg - 10mg, 10 pack
vial · out of stock
100 mg$585
10 units · $58.50 each
$5.85NoView listing
Modern Aminos15/100TB-500 (Thymosin Beta-4) - 10MG
vial
10 mg$59.00$5.90NoView listing
Peptide Crafters36/100TB-500 – Thymosin Beta-4 (10mg)
vial
10 mg$60.00$6.00NoView listing
Koi Peptides72/100TB-500 (Thymosin Beta-4) 10mg
vial
10 mg$59.95$6.00YesView listing
Verified Peptides62/100TB-500 Peptide (TB4) 10MG
vial
10 mg$62.00$6.20YesView listing
Paramount Peptides76/100Thymosin Beta 4 (TB500) (20mg)
vial
20 mg$125$6.25NoView listing
Geo Peptides48/100TB-500 Thymosin Beta 4 5mg (USA)
vial
5 mg$31.99$6.40NoView listing
Atomik Labz39/100TB-500 (Thymosin Beta-4) (43 AA) – 20mg
vial
20 mg$130$6.50YesView listing
Atomik Labz39/100TB-500 (Thymosin Beta-4) (43 AA) – 10mg
vial
10 mg$65.00$6.50YesView listing
Prime Peptides59/100TB-500 (TB4) - 10mg
vial
10 mg$65.00$6.50YesView listing
Direct Peptides41/100TB500 Peptide Vial – 10mg vial
vial · listed in GBP
10 mg$66.22$6.62NoView listing
Paramount Peptides76/100Thymosin Beta 4 (TB500) (10mg)
vial
10 mg$68.00$6.80YesView listing
Modern Aminos15/100TB-500 (Thymosin Beta-4) - 5MG
vial · out of stock
5 mg$34.00$6.80NoView listing
Skye Peptides23/100TB-500 (Thymosin Beta-4)(43 aa) - 10 mg
vial
10 mg$69.00$6.90NoView listing
Polaris Peptides26/100TB-500 10mg
vial
10 mg$70.00$7.00NoView listing
Swiss Chems59/100TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 5mg 10 vials
bulk
50 mg$352
10 units · $35.16 each
$7.03NoView listing
Swiss Chems59/100TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 5mg 1 vial
vial
5 mg$35.16$7.03NoView listing
Licensed Peptides84/100TB-500 (Thymosin Beta-4) 10mg - 10mg, 5 pack
vial · out of stock
50 mg$355
5 units · $70.93 each
$7.09NoView listing
Direct Peptides41/100TB500 Peptide Vial – 5mg vial
vial · listed in GBP
5 mg$35.56$7.11NoView listing
NuScience Peptides55/100TB500 Peptide - Research-Grade Thymosin Beta-4 - 5mg | 10mg - 10mg
vial
10 mg$74.99$7.50NoView listing
Liberty Peptides64/100TB-500 (Thymosin Beta-4) 5mg
vial
5 mg$38.00$7.60YesView listing
Receptor Chem50/100TB500 5mg
vial · listed in GBP
5 mg$38.09$7.62NoView listing
Receptor Chem50/100TB500 (TB4 – Thymosin Beta-4) 10mg
vial · listed in GBP
10 mg$76.19$7.62NoView listing
Direct Peptides41/100TB500 Peptide Vial – 10mg vial kit_bac water & needles
vial · listed in GBP
10 mg$77.62$7.76NoView listing
Direct Peptides41/100TB500 Pre-Mixed Pen 5mg Peptide – Cartridge: 1 pre-mixed cartridge
pen · listed in GBP
5 mg$38.84$7.77NoView listing
Amino Asylum34/100TB-500 5mg | Amino Asylum Research Peptide
vial
5 mg$39.99$8.00NoView listing
NuScience Peptides55/100TB500 Peptide - Research-Grade Thymosin Beta-4 - 5mg | 10mg - 5mg
vial
5 mg$39.99$8.00NoView listing
Licensed Peptides84/100TB-500 (Thymosin Beta-4) 10mg - 10mg, 3 pack
vial · out of stock
30 mg$250
3 units · $83.38 each
$8.34NoView listing
UK Peptides50/100Thymosin Beta 4 5mg TB500
vial · listed in GBP
5 mg$41.91$8.38YesView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE 2MG/5MG/10MG VIAL - 10 Milligrams Vial
vial
10 mg$85.99$8.60NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE - 10 Milligrams Vial
vial
10 mg$85.99$8.60NoView listing
Umbrella Labs59/100THYMOSIN BETA-4 (Tβ4) PEPTIDE LIQUID SPRAY 30ML BOTTLE (500MCG/ML, 15MG TOTAL)
other
15 mg$130$8.67NoView listing
Direct Peptides41/100TB500 Peptide Vial – 2mg vial
vial · listed in GBP
2 mg$17.40$8.70NoView listing
Blue Sky Peptide56/100Thymosin Beta 4 (TB500) 5mg
vial
5 mg$43.97$8.79NoView listing
Pure Peptide Labs74/100TB-500 5mg
vial
5 mg$44.95$8.99NoView listing
Pure Peptide Labs74/100TB-500 10mg
vial
10 mg$89.95$9.00NoView listing
Evolve Peptides70/100TB-500 (10mg)
vial
10 mg$90.00$9.00YesView listing
Direct Peptides41/100TB500 Peptide Vial – 5mg vial kit_bac water & needles
vial · listed in GBP
5 mg$46.96$9.39NoView listing
Receptor Chem50/100TB500 (TB4 – Thymosin Beta-4) 5mg
vial · listed in GBP
5 mg$46.98$9.40NoView listing
Blue Sky Peptide56/100Thymosin Beta 4 (TB500) 2mg
vial
2 mg$19.77$9.89NoView listing
Loti Labs58/100TB-500 5mg (Thymosin Beta 4 Fragment)
vial
5 mg$49.99$10.00NoView listing
Research Peptides32/100Thymosin Beta-4 (TB-500) 10mg
vial
10 mg$99.99$10.00YesView listing
Evolve Peptides70/100TB-500 (5mg)
vial
5 mg$50.00$10.00NoView listing
Licensed Peptides84/100TB-500 (Thymosin Beta-4) 10mg - 10mg, 1 pack
vial
10 mg$99.99$10.00NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE LIQUID SPRAY 15ML BOTTLE - 10mg Liquid Spray Solution 15mL Bottle
other
10 mg$101$10.10NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE - 1 (10mg) Peptide Vial With Liquid Spray Solution
other
10 mg$101$10.10NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE 2MG/5MG/10MG VIAL - 5 Milligrams Vial
vial
5 mg$50.99$10.20NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE - 5 Milligrams Vial
vial
5 mg$50.99$10.20NoView listing
American Research Pens43/100TB-500 10 mg
pen
10 mg$105$10.50NoView listing
Enhanced Peptides39/100Thymosin Beta 4 (TB500) - 10mg
vial
10 mg$105$10.50NoView listing
UK Peptides50/100Thymosin Beta 4 2mg (TB500)
vial · listed in GBP
2 mg$21.53$10.77YesView listing
Ascension Peptides77/100TB-500 (5MG)
vial
5 mg$54.00$10.80YesView listing
Swiss Chems59/100TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 2mg 1 vial
vial
2 mg$23.96$11.98NoView listing
Extreme Peptides44/100Thymosin Beta-4 — Full-Length (43 aa; TB-500) 5mg
vial
5 mg$59.99$12.00NoView listing
Paramount Peptides76/100Thymosin Beta 4 (TB500) (5mg)
vial
5 mg$60.00$12.00YesView listing
Biotech Peptides65/100TB-500 (Thymosin Beta-4) (10mg)
vial
10 mg$124$12.40YesView listing
Enhanced Peptides39/100Thymosin Beta 4 (TB500) - 5mg
vial
5 mg$65.00$13.00NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE LIQUID SPRAY 15ML BOTTLE - 5mg Liquid Spray Solution 15mL Bottle
other
5 mg$65.99$13.20NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE - 1 (5mg) Peptide Vial With Liquid Spray Solution
other
5 mg$65.99$13.20NoView listing
Swiss Chems59/100TB-500 (Thymosin Beta-4) – Tb-500-thymosin-beta-4: 2mg 10 vials
bulk
20 mg$270
10 units · $26.96 each
$13.48NoView listing
Sports Technology Labs70/100TB-500 5 mg
vial
5 mg$69.99$14.00YesView listing
Core Peptides74/100TB-500 (Thymosin Beta 4) - 5MG / 10MG - 10mg
vial
10 mg$140$14.00YesView listing
Direct Peptides41/100TB500 Peptide Vial – 2mg vial kit_bac water & needles
vial · listed in GBP
2 mg$28.80$14.40NoView listing
Biotech Peptides65/100TB-500 (Thymosin Beta-4) (5mg)
vial
5 mg$72.00$14.40YesView listing
Direct Peptides41/100TB500 Pre-Mixed Pen 5mg Peptide – Cartridge: 1 Pre Mixed Cartridge and Kit
pen · listed in GBP
5 mg$73.13$14.63NoView listing
Loti Labs58/100Thymosin Beta 4 (TB-500) 2mg
vial
2 mg$29.99$15.00NoView listing
Direct Peptides41/100TB500 Pre-Mixed Pen 5mg Peptide – Cartridge: 2 pre-mixed cartridges
bulk · listed in GBP
5 mg$77.67$15.53NoView listing
Core Peptides74/100TB-500 (Thymosin Beta 4) - 5MG / 10MG - 5mg
vial
5 mg$78.00$15.60YesView listing
BioLongevity Labs72/100TB-500 (10mg)
vial
10 mg$165$16.50NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE 2MG/5MG/10MG VIAL - 2 Milligrams Vial
vial
2 mg$33.99$17.00NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE - 2 Milligrams Vial
vial
2 mg$33.99$17.00NoView listing
Peptide Pros63/100TB-500 (Thymosin B4) 2mg
vial
2 mg$37.25$18.63NoView listing
Extreme Peptides44/100Thymosin Beta-4 — Full-Length (43 aa; TB-500) 2mg
vial
2 mg$39.99$20.00NoView listing
Elite Peptides24/100Thymosin Beta 4 2mg (Buy 1 Get 1 Free)
vial
2 mg$39.99$20.00NoView listing
Direct Peptides41/100TB500 Pre-Mixed Pen 5mg Peptide – Cartridge: 3 pre-mixed cartridges
bulk · listed in GBP
5 mg$105$20.97NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE LIQUID SPRAY 15ML BOTTLE - 2mg Liquid Spray Solution 15mL Bottle
other
2 mg$48.99$24.50NoView listing
Umbrella Labs59/100TB-500 THYMOSIN BETA-4 PEPTIDE - 1 (2mg) Peptide Vial With Liquid Spray Solution
other
2 mg$48.99$24.50NoView listing
Atomik Labz39/100BULK PACK TB-500 (Thymosin Beta-4) (43 AA) – 20mg (10 VIALS)
bulk
20 mg$1,170
10 units · $117 each
$58.50YesView listing
Alpha Labs Peptides68/100TB-500 Liquid Spray
nasal
—$38.49—NoView listing
Direct Peptides41/100Thymosin Beta-4 Fragment Capsules – 60 Capsules
capsule · listed in GBP
—$146—NoView listing
Direct Peptides41/100Thymosin Beta-4 Fragment Capsules – 60 Capsules Twin Pack
capsule · listed in GBP
—$263—NoView listing
Direct Peptides41/100TB500 Nasal Spray – 2 x 30ml (Twin Pack)
nasal · listed in GBP
—gated—NoView listing
Direct Peptides41/100TB500 Nasal Spray – 2 x 15ml (Twin Pack)
nasal · listed in GBP
—gated—NoView listing
Direct Peptides41/100TB500 Nasal Spray – 4 x 15ml (Bulk Buy)
nasal · listed in GBP
—$93.70—NoView listing
Direct Peptides41/100TB500 Nasal Spray – 4 x 30ml (Bulk Buy)
nasal · listed in GBP
—$166—NoView listing
Direct Peptides41/100TB500 Nasal Spray – 30ml
nasal · listed in GBP
—$48.77—NoView listing
Direct Peptides41/100TB500 Nasal Spray – 15ml
nasal · listed in GBP
—$27.56—NoView listing
Limitless Biotech61/100TB-500 (Thymosin Beta-4)
vial
—gated—NoView listing
Limitless Biotech61/100TB-500 Thymosin Beta-4 Fragment 1-4
vial
—gated—NoView listing
Limitless Biotech61/100TB-500 Thymosin Beta-4 Fragment 17-23
vial
—gated—NoView listing
Limitless Biotech61/100Thymosin Beta 4 (Fragment 1-4) (60 Capsules)
capsule
—gated—NoView listing
US Peptides28/100TB-500 (Thymosin Beta-4)
vial
—$51.99—NoView listing
Swiss Chems59/100TB-500 (0.5mg/capsule), 60 Capsules
capsule
—$255—NoView listing
USA Peptides24/100TB-500 Injection
other
—$125—NoView listing
Verified Peptides62/100Thymosin Beta-4
vial
—$62.00—NoView listing
Amino Asylum34/100TB-500 Spray | Amino Asylum Research Peptide
nasal
—$64.99—NoView listing
Simple Peptide65/100TB-500
vial
—gated—NoView listing
Xcel Peptides36/100TB-500 – TB4 (43aa) Capsules
capsule
—gated—NoView listing
Xcel Peptides36/100TB-500
vial
—gated—NoView listing
Peptide Warehouse61/100TB-500
vial
—$54.99—YesView listing
PureRawz37/100Thymosin Beta-4 (TB-500)
vial
—gated—NoView listing
Umbrella Labs59/100THYMOSIN BETA-4 (Tβ4) PEPTIDE POWDER (60 CAPSULES) (250MCG/CAPSULE, 15MG TOTAL BOTTLE)
capsule
—$150—YesView listing

Public certificates for TB-500

SupplierProductLotLaboratoryDatePurityMethod
Pure Peptide LabsTB-500TB5319Kovera Labs2026-10-0199.811%—Open
Pure Peptide LabsTB-500TB1317Kovera Labs2026-10-0199.627%—Open
Swiss ChemsTB-500 (Thymosin Beta-4)—Not named2026-09-04——Open
NexaphTB4 10mgTB41008102026-15Not named2026-08-09——Open
Core PeptidesTB-500 (Thymosin Beta 4) 5mgC74179Vanguard Laboratory2026-07-2299.8%HPLCOpen
Core PeptidesTB-500 (Thymosin Beta 4) 10mgC74180Vanguard Laboratory2026-07-2299.8%HPLCOpen
Biotech PeptidesTB-500 (Thymosin Beta-4) (5mg)3141081MZ Biolabs2026-07-1599.72%HPLC+MSOpen
Biotech PeptidesTB-500 (Thymosin Beta-4) (10mg)3141080MZ Biolabs2026-07-1599.83%HPLC+MSOpen
Paramount PeptidesThymosin Beta 4 (TB500) (10mg)26VTBC164Accumark Labs2026-07-08——Open
Ascension PeptidesTB-500 5mg31-05260628Kovera Labs2026-07-03——Open
Loti LabsTB-500 5mg—Bioviridian2026-06-2999.8%—Open
Umbrella LabsThymosin Beta 4—Not named2026-06-24——Open
Paramount PeptidesThymosin Beta 4 (TB500) (5mg)TB45N030126Janoshik2026-04-17——Open
Koi PeptidesTB-500 10mg2512290134Freedom Diagnostics2025-12-3099.127%HPLC+MSOpen
Atomik LabzTB-500 (Thymosin Beta-4) (43 AA) – 10mgF1024FJanoshik2025-11-1099.671%—Open
NuScience PeptidesTB500 - 5mg—Not named2025-02-06——Open
Evolve PeptidesTB-500 5 mg52828Janoshik2024-11-18——Open
BioLongevity LabsTB-500261476Not named———Open
Geo PeptidesTB-500 10mg—Not named———Open
Geo PeptidesTB-500 20mg—Not named———Open
Research PeptidesThymosin Beta-4 (TB-500) 10mg—Not named———Open
Eternal PeptidesTB-500 5mg—Kovera Labs———Open
Eternal PeptidesTB-500 10mg—Kovera Labs———Open
UK PeptidesThymosin Beta 4 5mg TB500—UK-PEPTIDES.COM—99.2%HPLCOpen
UK PeptidesThymosin Beta 4 2mg (TB500)—UK-PEPTIDES.COM—99.2%HPLCOpen
Licensed PeptidesTB-500 (Thymosin Beta-4) 10mgV260123-1Vanguard Laboratory——HPLCOpen
Licensed PeptidesTB-500 (Thymosin Beta-4) 10mg (LAL endotoxin report)V260123-1Vanguard Laboratory———Open

Suppliers that list TB-500, by score

Licensed Peptidespublic certificates · US84/100Ascension Peptidespublic certificates · US77/100Paramount Peptidespublic certificates · US76/100Core Peptidespublic certificates · US74/100Pure Peptide Labspublic certificates · US74/100BioLongevity Labspublic certificates · US72/100Koi Peptidespublic certificates · US72/100Alpha Peptidespublic certificates · US71/100Evolve Peptidespublic certificates · US70/100Sports Technology Labspublic certificates · US70/100Alpha Labs Peptidespublic certificates · US68/100Biotech Peptidespublic certificates · US65/100Simple Peptidecertificates not public · US65/100Liberty Peptidespublic certificates · US64/100Nexaphpublic certificates63/100Peptide Prospublic certificates · US63/100Verified Peptidespublic certificates · US62/100Limitless Biotechpublic certificates · US61/100Peptide Warehousepublic certificates · US61/100Prime Peptidespublic certificates · US59/100Swiss Chemspublic certificates · US59/100Umbrella Labspublic certificates · US59/100Loti Labspublic certificates · US58/100Blue Sky Peptidepublic certificates · US56/100NuScience Peptidespublic certificates · US55/100Receptor Chempublic certificates · UK50/100UK Peptidespublic certificates · UK50/100Geo Peptidespublic certificates · US48/100Extreme Peptidespublic certificates · US44/100American Research Penscertificates not public · US43/100Direct Peptidespublic certificates41/100Atomik Labzcertificates not public · US39/100Enhanced Peptidescertificates not public · US39/100PureRawzcertificates not public · US37/100Peptide Crafterscertificates not public · US36/100Xcel Peptidescertificates not public · US36/100Amino Asylumcertificates not public · US34/100Research Peptidespublic certificates32/100Trident Peptide UKcertificates not public · UK29/100US Peptidescertificates not public · US28/100Polaris Peptidescertificates not public · US26/100Elite Peptidescertificates not public · US24/100USA Peptidescertificates not public · US24/100Skye Peptidescertificates not public · US23/100Eternal Peptidescertificates not public · US22/100Modern Aminoscertificates not public · US15/100

Frequently asked questions

Who sells TB-500?

46 suppliers in our index list TB-500: Licensed Peptides, Ascension Peptides, Paramount Peptides, Core Peptides, Pure Peptide Labs, BioLongevity Labs and others. The highest-scoring of them is Licensed Peptides (84/100).

What does TB-500 cost?

Across 88 listings the median is $8.99 per milligram, ranging from $3.13 to $24.50. The lowest listed price per milligram is Alpha Peptides's 10 mg listing at $31.32.

Which TB-500 listings have a public certificate?

27 certificates for TB-500 are on file from Pure Peptide Labs, Swiss Chems, Nexaph, Core Peptides, Biotech Peptides, Paramount Peptides, Ascension Peptides, Loti Labs, Umbrella Labs, Koi Peptides, Atomik Labz, NuScience Peptides, Evolve Peptides, BioLongevity Labs, Geo Peptides, Research Peptides, Eternal Peptides, UK Peptides, Licensed Peptides. Open each one and check the lot number against the vial label.

All listed materials are sold for laboratory research use only. Prices are the supplier's listed prices at the time of indexing, before any coupon; they change, so confirm in the cart. Price per milligram uses the stated mass on the listing.