However, at around 3.20 PM, the Aarti Drug stock has corrected and was trading at Rs2853.30 per piece down 2.56% on Sensex.
The government has imposed the duty for six months.
Meanwhile, Godavari Drugs who also have Ciprofloxacin Hydrochloride among its API products was trading at the upper circuit of Rs38.20 per piece up 5%.
The centre has imposed $0.9-$3.49 per kg on the raw material used in making antibiotics.
In India, pharma companies like Aurobindo Pharma, Dr Reddy's Laboratories, Neuland Laboratories and Sun Pharmaceutical are some of the other producers of the antibacterial drug.