This yellow, round pill imprinted with GG 952 5 is a Prochlorperazine 5 MG Oral Tablet, per the NIH.
Prochlorperazine Maleate is a human prescription drug. The active pharmaceutical ingredient is prochlorperazine maleate and is classified as, "Phenothiazine [EPC], Phenothiazines [Chemical/Ingredient]."
This pill is made by Sandoz Inc.
There is 1 other yellow pill that with a similar imprint: "GG 952 5". They may be a different dosage of the same drug or a different drug entirely.