Peptide Critic provides independent vendor reviews, third-party lab testing and price comparison for research peptides such as BPC-157, GHK-Cu and TB-500. Find compounds by name or synonym, compare vendor ratings and review counts, inspect vendor-level lab-verified COA and warning flags, compare list and discounted prices per milligram, and find coupon codes. Filter comparisons by vendors' shipping origin and pack size, or look up a vendor profile. Results use Peptide Critic's Best Value ranking, which favors partners when offers are comparable; returned buy links are tracked affiliate links. The app returns public catalogue data without sign-in and does not place orders or process payments. Prescription-drug analogues are excluded from compound search and comparison. Research use only; no dosing or medical advice.
How to use
- 1Add it in ChatGPT
Open Peptide Critic in ChatGPT's Plugin directory (button above), select + to add it and sign in if asked.
- 2Use it in a chat
Type @ in the composer and pick Peptide Critic, or start your message with its name. ChatGPT may also suggest it when it fits what you ask.
Things to ask
- “Compare BPC-157 vendors by price per mg, reviews and lab testing”
- “Which GHK-Cu vendors ship from the US and have lab-verified COAs?”
- “Is there a coupon code for Southern Aminos?”
Disconnect
- 1Disconnect it in ChatGPT
Open Settings, then Apps or Plugins (the label depends on your rollout), select Peptide Critic and choose Disconnect. ChatGPT stops acting through your account; past conversations aren't deleted.