This gray, round pill imprinted with 4940 V is a Perphenazine 2 MG Oral Tablet, per the NIH.
Perphenazine is a human prescription drug. The active pharmaceutical ingredient is perphenazine and is classified as, "Phenothiazine [EPC], Phenothiazines [Chemical/Ingredient]."
This pill is made by a total of 3 firms: (1) Qualitest Pharmaceutical, Inc., (2) State of Florida DOH Central Pharmacy, and (3) Qualitest Pharmaceuticals
There is 1 other gray pill that with a similar imprint: "4940 V". They may be a different dosage of the same drug or a different drug entirely.