Is a round white pill with a v and 0027 a perc?

A round white pill marked with "V" on one side and "0027" on the other is identified as Diphenhydramine 25 mg, an antihistamine commonly used for allergy relief and as a sleep aid. It is not a Percocet (which contains oxycodone and acetaminophen). If you have any concerns about medications or dosages, it's best to consult a healthcare professional.