Count: 0 medications found that meet the criteria. For a global A–Z reference built from authoritative sources (FDA, EMA, WHO ATC, RxNorm, DailyMed) and limited to established generic names, no approved drug generics begin with the letter “Y.” Note that “Y” appears more often in brand names, supplements, or radiopharmaceutical notations (for example, yttrium-90 designations) than in INN/USAN generic names.

Understand why the search returns nothing. International generic naming systems favor consistent stems and roots derived from Latin, Greek, or chemical nomenclature, and those conventions rarely produce a leading “Y.” Regulators and naming authorities aim for clarity and common stems (like -mab, -pril, -statin), so unusual initial letters are uncommon. Close matches exist but do not meet the criteria: brand-name drugs that begin with Y (for example, Yescarta, Yervoy), supplements such as yohimbine, and radiopharmaceutical products labeled with the element yttrium (Y‑90) are related but are not generic, widely approved drug names in standard regulatory databases.

Consider what to do next. If you want medications commonly searched under “Y,” check brand-name listings, radiopharmaceutical registries, or supplement databases and verify entries against FDA/EMA or WHO ATC records. Rely on authoritative sources for any clinical or prescribing decisions, and expect this letter to remain sparsely populated because of established naming patterns and regulatory naming rules.