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Someone on a forum asked whether using two peptides, BPC-157 and TB-500, to treat a painful wrist tendon condition (De Quervain’s tendinitis) would interfere with their wife’s Prozac (fluoxetine) treatment. They say a cortisone shot didn’t help and they’re thinking about trying the peptide combo before considering surgery. BPC-157 and TB-500 are not drugs you’ll find in a pharmacy for this condition. BPC-157 is a short chain of amino acids (a peptide) that some lab and animal studies suggest may help with healing tendons, ligaments, and gut tissue. TB-500 is a synthetic fragment of a natural protein called thymosin beta-4; in animals it’s been reported to promote cell migration and wound healing. Neither one is an established prescription treatment for tendonitis in humans, and they’re mostly used experimentally or sold as research chemicals. What the evidence actually shows is limited and weak. Most positive results come from cell studies or experiments in animals (rats, mice). Human data are largely anecdote — personal reports on message boards or very small, uncontrolled case reports. There are no large, high-quality clinical trials proving these peptides reliably heal tendons or are safe long-term. So if someone reports dramatic improvement, that’s just one story and could be due to other factors like rest, physical therapy, or placebo effect. Why people care is understandable: De Quervain’s can be very painful and surgery is a big step. If a non-surgical option helped, it could avoid risks and recovery time. But because these peptides are not regulated medications for this use, there’s uncertainty about dosing, purity, and whether they actually work. Anyone considering them should first try established non-surgical options (rest, splints, physical therapy, steroid injections — with follow-up with a hand specialist) and discuss experimental treatments with their doctor. The main caveats: There’s no good evidence that BPC-157 or TB-500 interact with Prozac (fluoxetine), but absence of evidence is not proof of safety. These peptides are not FDA-approved for tendon healing; quality and labeling of products sold online can be unreliable. Possible risks include infection from injections, allergic reactions, or unknown systemic effects. People on antidepressants should be cautious about adding experimental substances without medical supervision. If surgery is being considered, discuss timelines and all treatments with the surgeon and the prescribing physician for Prozac. Bottom line: These peptides are experimental with limited human data. Talk to your wife’s doctor and surgeon before trying them, especially while she’s taking Prozac.
Source: r/Peptides