The shares of pharma major Cadila Healthcare, also known as Zydus Cadila, have been on a roll for the past few weeks. The stock's value rose almost 55 per cent to a six-month high of Rs 548.35 on June 12. Cadila has edged past Lupin to become the second-most valuable pharmaceutical company by market capitalisation at Rs 54,719 crore.
There were two triggers behind this sharp rise; one, the US Food and Drug Administration’s approval for the generic version of an ulcerative colitis drug Lialda (which has sales of $ 1.14 billion in the US); and two, the expectation of

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