what is a light green/ drk green capsule with 131 par written in black on it?

It sounds like cephalexin.an antibiotic used to treat many different types of bacterial infections such as bronchitis, tonsillitis, ear infections, skin infections, and urinary tract infections. It can also be given to dogs.

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oh, just take it and see what it does.let the rest of us know. don’t take it if you don’t know what it is.