Indian pharmaceutical stocks fell 2 per cent on Friday after US President Donald Trump announced a 100 per cent tariff on imports of branded and patented drugs, effective October 1.

The US is India's largest market for pharmaceutical exports, accounting for over a third of the total volume, mostly of cheaper generic drugs.

Of the 20 index constituents, 18 traded in the red as of 2:37 pm IST.

Analysts described the decline as \"sentimental\", noting that India's exports to the US are primarily generic medicines, which may not be affected by the tariffs.

Sun Pharmaceutical Industries, India's largest drugmaker by revenue and the heaviest stock on the index, fell about 3 per cent. Sun Pharma markets patented drugs, including Ilumya, a psoriasis treatment approved by the US FDA.

The compa

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