Farah, a 59-year-old resident of Iran’s capital Tehran, used to fill her autoimmune prescription with a Swiss-made drug. Now she takes the Iranian-made version and worries that, too, may soon be in short supply.

“I switched to the Iranian-made version because of the price and availability,” she told Al Jazeera, giving only her first name. “You might not find the foreign-made version later, and you can’t keep switching because they don’t have the same quality and effectiveness.”

She’s now bracing for shortages of the Iranian-made drug, too.

Iranian news outlets have reported growing shortages of medicine for cancer and other serious illnesses amid a crisis in Iran’s pharmaceutical sector, as the United States leans on military pressure, sanctions and a naval blockade to squeeze Iranians.

About 800 pharmaceutical products are currently in short supply nationwide, including 90 considered essential and life-saving, according to Hadi Ahmadi, a spokesman for the Iranian Pharmacists Association. Four hundred of those drugs, he told local media last week, are manufactured inside Iran.