Shares of Indian pharmaceutical companies such as Cadila Healthcare, Lupin Ltd and Sun Pharmaceutical Industries gain between 4.10 pct and 8.9 pct.
Nifty Pharma index rises 3.1 pct.
Investors are buying after several weeks of decline - analysts.
As of Wednesday's close, Lupin shares were down 6.1 pct since the company reported its June-qtr results on Aug 2.
Shares of Sun Pharmaceutical Industries had lost 25.5 pct this year as of Wednesday's close.
More than 3.4 mln Cadila shares changed hands, compared with the 30-day average of around 1.2 mln shares.
As of Wednesday's close, Nifty Pharma index was down 8.9 pct compared with the NSE index's 2.3 pct fall from a record high hit on Aug 2.
