This study examined 260 samples of 13 essential medicines in Enugu and Anambra, Nigeria, revealing that 25.4% did not meet USP 42 standards. Dexamethasone tablets had a 95% failure rate, and noncommunicable disease drugs showed higher non-compliance (21.2%) than anti-infectives (17.6%). OOS rates were similar between licensed vendors (25.2%) and market vendors (25.5%), with only ...







