As Chapel states, Hetero are one of the major manufacturers of Hepatitis medications in India and also make product for other Indian companies under various brand names. Details below:
https://fixhepc.com/forum/daa-access/448-hetero-sof-dac-sof-led-combo.html
They also appear to have a chain of retail pharmacies in India. However, I don’t know whether these are owned by Hetero or are just franchises or resellers. If you are planning to purchase via mail order then Supply Chain Integrety is very important and you should check such things as whether delivery is guaranteed and what happens if your purchase is seized by customs, etc. (see below for more information)
https://fixhepc.com/getting-treated/supply-chain-integrity.html