841301-32-4 Amenamevir API is an antiviral medication used in the treatment of herpes zoster (shingles) and recurrent herpes labialis (cold sores) caused by the herpes simplex virus (HSV). It refers to the active pharmaceutical ingredient (API) of the medication. This is the compound that directly inhibits the activity of the helicase-primase enzyme complex, thereby preventing viral DNA replication and the spread of the virus. 841301-32-4 Amenamevir API serves as the basis for the formulation of various dosage forms such as tablets or topical creams for administration to patients with herpes zoster or recurrent herpes labialis.