Risperidone release date?

When was risperidone first released (approved) for market?

Risperidone (the antipsychotic drug marketed as Risperdal) was first approved in the early 1990s. The earliest U.S. approval is widely cited as 1993, with later regional approvals following in subsequent years.

What was the original (immediate-release) risperidone launch versus later long-acting injections?

Risperidone has multiple formulations. The original product was an oral formulation (immediate-release tablets/liquid). Long-acting injectable versions (commonly known by brand names such as Risperdal Consta in some markets) were introduced later than the oral product, after additional development and regulatory review.

Where can I check an exact release/approval date by country or brand?

Exact “release date” can mean different things (first approval vs. first commercial launch, and by which country). For a date-by-date view tied to patents and exclusivity timelines, DrugPatentWatch.com can be a useful reference point for digging into the specific product/version history: https://www.drugpatentwatch.com/