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Where to Buy RU-58841: Cheapest Vendor in 2026
RU-58841 pricing across every research peptide vendor we track, ranked by price per mg. Prices change often, so check the vendor before you buy.
No in-stock RU-58841 listings right now.
Vendor stock changes often, so check back. Use the compound profile to track research progress in the meantime.
Research profile
Mechanism, dosing, half-life, peer-reviewed studies for RU-58841.
Coupon codes
Every active vendor coupon for RU-58841, click-to-copy.
Reconstitution calculator
Vial size + BAC water → concentration, syringe units, doses per vial.
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What is RU-58841?
RU-58841 (also known as PSK-3841 or HMR-3841, and commonly written simply as RU in hair-loss forums) is a non-steroidal androgen receptor antagonist originally developed by Roussel Uclaf (later absorbed into Sanofi) in the late 1980s and early 1990s. The compound was designed as a potential topical treatment for androgen-dependent skin conditions — including androgenic alopecia (male pattern hair… Read the full RU-58841 research profile
Buying RU-58841: FAQ
Where can I buy RU-58841 online?
RU-58841 is currently between in-stock listings across the vendors we track. Bookmark this page and check back, since vendor stock changes often.
What's the cheapest price for RU-58841?
No vendor we track lists it as in stock, so there is no price to compare. Check back when listings come back in stock.
Is buying RU-58841 online safe?
Vendor safety varies. BodyHackGuide scores every vendor on a 0-100 Trust Score (COA verification, payment transparency, community feedback, shipping practices). This page ranks listings by price per mg, not by score, so check each vendor's score breakdown on its BodyHackGuide profile before you buy.
Do I need a prescription for RU-58841?
RU-58841 is sold for research-use-only by the vendors on this page; no prescription required for research purchases. None of these vendors sell RU-58841 for human consumption, and BodyHackGuide doesn't promote off-label use. Always consult a licensed practitioner before any compound enters a clinical context.
Affiliate disclosure. BodyHackGuide earns a commission on some of its links, at no additional cost to you. Vendor rankings are based on price per mg from the listings we track. We don't accept payment for editorial placement. See our full affiliate disclosure .
Free 2026 Peptide Cheat Sheet (PDF)
38 compounds and blends: vial sizes, BAC water volumes, dosing ranges and bloodwork markers.