Facility

Siegfried AG — Zofingen Controlled Substance API Plant

Operated by Siegfried AGCH · Aargaumanufacturing

Siegfried AG primary API manufacturing campus in Zofingen, Switzerland. Swissmedic-licensed controlled substance API production including buprenorphine, methadone, and other Schedule I/IV substances under Swiss Narcotics Act and INCB quota framework. Swiss manufacturing neutrality and multi-jurisdictional controlled substance licensing make this a key third-party buprenorphine API source for generic manufacturers. Source: https://www.siegfried.ch/en/locations/zofingen/

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