The stock settled the day at Rs 231, up 3.40 per cent on BSE. During the day, it climbed 5.37 per cent to Rs 235.40.
On NSE, it went up 3.55 per cent to close at Rs 231.55.
"The company has received Abbreviated New Drug Application (ANDA) approval from the United States Food and Drug Administration (USFDA) for Quetiapine Fumarate tablets," Unichem Laboratories said in a filing to BSE.
The approval is for the company's tablets in strengths of 25 mg, 50 mg, 100 mg, 200 mg, 300 mg and 400 mg, it added.