Science.bio

STATUS: CLOSED — January 2026

Formerly a well-known US vendor of research peptides and SARMs. Closed operations in January 2026.

Overview

Science.bio was a prominent US-based research chemical vendor known for both peptides and SARMs (selective androgen receptor modulators). They were popular among the research community for competitive pricing and transparent third-party testing. They closed operations in January 2026, predating the wave of closures and FDA enforcement actions that hit the industry in early-to-mid 2026.

Their closure was one of the early signals of the FDA-crackdown-on-peptide-vendors-2025-2026.

Products & Testing

Carried a diverse catalog spanning peptides (BPC-157, TB-500) and SARMs (RAD-140, MK-677). The dual focus on peptides and SARMs was unusual among vendors. Third-party tested via HPLC + Mass Spec with COAs publicly available.

Shipping & Payment

No longer operational. Previously shipped both domestically and internationally.

Community Reputation

Reddit sentiment was historically positive. Known for good quality-to-price ratio and responsive customer service. Their closure was discussed widely on r/Peptides and related subreddits. Some community members had advance notice through email announcements before the site went fully offline.

Regulatory Status

Closed January 2026. No public FDA warning letter issued. The closure appeared to be a proactive business decision rather than a direct enforcement action, though the timing suggests regulatory pressure was a factor. Science.bio’s inclusion of SARMs in their catalog may have increased their regulatory risk profile compared to peptide-only vendors.

Compounds Available (Historical)

• BPC-157
• TB-500
• MK-677

See Also

• Peptide-Sciences
• FDA-Warning-Letters-April-2026
• FDA-crackdown-on-peptide-vendors-2025-2026
• Science-Bio-Shutdown-January-2026