This yellow, oval pill imprinted with R 497 is a Nifedipine 10 MG Oral Capsule, per the NIH.
Nifedipine is a human prescription drug. The active pharmaceutical ingredient is nifedipine and is classified as, "Calcium Channel Antagonists [MoA], Dihydropyridine Calcium Channel Blocker [EPC], Dihydropyridines [Chemical/Ingredient]."
This pill is made by a total of 2 firms: (1) Actavis Elizabeth LLC, and (2) Physicians Total Care, Inc..
There is 1 other yellow pill that with a similar imprint: "R 497". They may be a different dosage of the same drug or a different drug entirely.