Pink oblong pill imprinted MOVA on one side and 500 M50 on the other side is 500 mg
naproxen, a nonsteroidal anti-inflammatory drug.
More info:
http://naproxen.drugs.com/
I'm not a pharmacist or a medical doctor. This message is not medical advice, nor is at an offer to provide medical advice. All drug identifications should be validated by a licensed MD or pharmacist.