The CBI probe was ordered following a recommendation by Delhi Lt Governor V K Saxena on the matter in December last year.
Orchid Chemicals & Pharmaceuticals on Monday said it has received US health regulator's approval to sell anti-epileptic levetiracetam tablets in the American market.
Drug maker Sun Pharmaceutical Industries on Thursday said it has received the US health regulator's nod for marketing a generic version of the Keppra injection, used for treating epilepsy, in the American market.
Dr Reddy's Laboratories has filed an Abbreviated New Drug Application with the United States Food and Drug Administration for Levetiracetam tablets, 250, 500 and 750 mg.
The company's market value rose by Rs 1,684.87 crore.
Indian pharma firms under European drug regulator's scanner.
The Nifty50 slipped 33 points to close the session at 8,509 after hitting an intra-day high of 8,587.