also: ぞろやく
noun
Colloquial term for a generic drug, often used in contrast to brand-name drugs. Derived from ゾロゾロ (many, in droves) suggesting many similar products.
最近、薬局でゾロ薬を勧められることが多い。
Lately, I'm often recommended generic drugs at the pharmacy.
ゾロ薬は先発薬より安いけど、効果は同
Generic drugs are cheaper than brand-name drugs, but the effect is the same.
Another formal term, often used in medical and insurance settings. ゾロ薬 is more casual.
From ゾロゾロ (many, in droves) + 薬 (medicine), referring to the many similar generic drugs that follow a brand-name drug's patent expiration.