Oseltamivir manufacturer?

Oseltamivir (marketed as Tamiflu) was originally developed and is still marketed by Roche.
The drug is produced under the brand name Tamiflu® by Roche’s pharmaceutical division.

In addition, oseltamivir is widely available as a generic medication, with many manufacturers worldwide producing it under various brand names (e.g., Teva, Mylan, Sandoz, etc.). These generics contain the same active ingredient and are approved by regulatory authorities for the same uses.