What kind of pill is v 4212?

The pill imprinted with "V 4212" is identified as Diphenhydramine Hydrochloride 25 mg, which is an antihistamine commonly used to relieve symptoms of allergy, hay fever, and the common cold. It can also be used as a sleep aid due to its sedative properties. The pill is typically pink and round. Always consult a healthcare professional before using any medication.