Praseltinib is a kind of drug that blocks something called RET, helping to treat lung and thyroid cancers that are linked to RET fusions. It works by focusing on the RET kinase, an enzyme that’s linked to these cancers. The drug comes in capsules that are 100 mg each.
You should take 400 mg of it every day on an empty stomach. A bottle holds 60 capsules, which gives you a 15-day supply after the first high-dose day. It’s made to stop cancer cells from growing by keeping the RET kinase from doing its thing.
