More than 30 samples of drugs made by Delhi-based Synokem Pharmaceuticals Ltd. — including generic abortion pills, an antibiotic and anti-seizure medicines — have failed quality tests conducted by Indian regulators and public health researchers since 2018, according to government records and data reviewed by Bloomberg News. The samples contained impurities, lacked the right amount of active ingredient or failed to meet other international standards designed to ensure that medicine is safe and effective, the records show.