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USFDA Guidance: Certification Process for Designated Medical Gases
Medical gases such as oxygen, nitrous oxide, and medical air are essential components of modern healthcare. Although they are widely used and often considered routine clinical supplies, these gases are regulated as drugs under the Federal Food, Drug, and Cosmetic Act (FD&C Act). Recognising the unique nature of these products, Congress created a dedicated certification pathway for Designated Medical Gases (DMGs) under sections 575 and 576 of the FD&C Act. On 11 February 2026

Sharan Murugan
Feb 114 min read


USFDA & ICH Guidances: : cGMP for Medical Gas, Extractables & Leachables (Q3E), and Class 3 Leachable Monographs
As pharmaceutical modalities diversify—from traditional injectables to complex biologics, cell therapies, inhalation products, and medical gases—the integrity of container closure systems, delivery devices, manufacturing components, and raw materials has never been more critical. The FDA’s recent guidances reflect this evolving reality and aim to tighten quality expectations across the entire product lifecycle. Three key guidances are: Current Good Manufacturing Practice for

Sharan Murugan
Nov 29, 20253 min read
