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How US tariffs on patented drugs have affected Indian companies
Generics and biosimilars are exempt from these tariffs

How US tariffs on patented drugs have affected Indian companies

Apr 06, 2026
01:28 pm

What's the story

The United States has imposed tariffs of up to 100% on patented drugs, a move that could have a major impact on India's specialty pharmaceutical players. The decision comes after a Section 232 national security investigation and is aimed at reducing the country's reliance on imported pharmaceuticals. However, generics and biosimilars are exempt from these tariffs, leaving them unaffected by the new trade measures.

Market impact

Sun Pharma most exposed to tariffs

Among Indian companies, Sun Pharma is the most exposed to these tariffs. The company has over $1 billion in US specialty sales. If Sun Pharma absorbs the tariff impact, Nomura analyst Sion Mukherjee estimates a 5% hit on its FY28 earnings. However, he also warned that passing costs onto customers could hurt market share gains for the company.

Earnings forecast

Jefferies predicts mid-single digit impact on Sun Pharma's earnings

Jefferies analyst Alok Dalal has predicted a mid-single digit impact on Sun Pharma's FY27 earnings in a worst-case scenario. He believes the company can completely mitigate the impact using transfer pricing or price hikes. Notably, generics have been exempted from these tariffs, meaning there will be no effect on other pharma companies under Jefferies's coverage.

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Tariff details

Who will be exempt from the tariffs?

Seventeen major pharma companies that have signed agreements with the US government will pay either 0% or 20% tariffs, depending on the deal terms. Companies committing to the most-favored-nation pricing, US investments, and onshoring are exempt until January 20, 2029. Niche categories like orphan drugs, nuclear medicines, plasma-derived therapies, fertility treatments, cell and gene therapies, as well as antibody-drug conjugates are also exempt from these tariffs.

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CDMO impact

Sai Lifesciences has highest exposure among CDMOs

Among Contract Development and Manufacturing Organizations (CDMOs), Sai Lifesciences has the highest exposure with about 12% of its sales coming from US shipments of patented products. However, Dalal expects a limited near-term impact as most big pharma companies have signed a deal (thus would be eligible for zero tariffs) while biotech firms usually have just one supplier per product.

Potential effects

Nomura warns of modest impact on CDMOs

Mukherjee from Nomura said the tariff order "may impact CDMO companies in select cases, but we expect the impact to be modest in most cases." He added that while most Indian CDMOs manufacture key intermediates, and APIs that may not ship directly to the US, in certain cases, the US customs may consider India as the country of origin and levy higher tariffs.

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