Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. Misinformation about nirmatrelvir/ritonavir (Paxlovid, Pfizer) for treating mild-to-moderate ...

When your doctor writes a prescription, she is supposed to know everything else you are taking and check that the new medication won’t interact. Long ago, doctors and pharmacists had to look the ...

Ingrezza (valbenazine) has potential interactions with other medications and some supplements. For example, Ingrezza can interact with the drugs paroxetine and ketoconazole. Ingrezza and Ingrezza ...

A drug interaction happens when a substance affects how a drug behaves in the body. Some substances that can cause interactions include other drugs, supplements, food, and alcohol. Drug interactions ...