B7-33 vs TB-500
Which should you choose? Here's what you need to know.
The short answer
B7-33 and TB-500 are both recovery / healing peptides, but they work differently. A shortened form of relaxin, studied for scarring and tissue fibrosis. A synthetic version of Thymosin Beta-4, a naturally occurring peptide involved in tissue repair. Often used alongside BPC-157 for recovery protocols. Compare vendor pricing and availability below.
On 20 Sep 2026 Peptide Compare tracked 3 vendors selling B7-33, cheapest in stock $10.33 per mg at Biotech Peptides, and 62 selling TB-500, cheapest $3.60 per mg at Step One.
B7-33
Recovery / HealingA shortened form of relaxin, studied for scarring and tissue fibrosis.
TB-500
Recovery / HealingA synthetic version of Thymosin Beta-4, a naturally occurring peptide involved in tissue repair. Often used alongside BPC-157 for recovery protocols.
Price & availability
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options. Prices verified Sep 20, 2026.
B7-33
TB-500
$60.00
Starting from
$22.95
$9.07
Avg. price per mg
$10.70
3
Vendors selling it
62
1 options
In stock now
71 options
No data
Top trust score
9.1/10
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Where does this data come from?
We re-check vendor prices continuously and score vendors on Finnrick blind-test results — samples bought anonymously and sent to a lab, not vendor claims. No vendor can pay to rank higher. See our full methodology.