Off white oblong shaped pill with no imprint and a score of a line?

Sorry, there's no way to ID a pill without an imprint. All Rx and OTC drugs in the US are required by the FDA to have an imprint, otherwise it could be a vitamin, herbal, energy, diet, foreign or illicit.

Until I heard the bluish/grayish tint I was leaning toward a Sulfa antibiotic. The tint of bluish/gray, coupled with the oblong shape and score mark down only one side reminds me of the oyster-shell calcium supplements mother used to take. I can't swear that either of these is right, I just know what it feels like to be perplexed about what's in the med. cabinet. A lot of oblong white scored pills are opiate pain pills but with your pills apparent lack of imprint I just know that is not what they are. Sounds to me, you've got supplements and possible antibiotics. Take them to a pharmacist YOU TRUST, explain they were lying around the med cab. and you wanna know what they are. Again, please check this out with a licensed professional who specializes in pharmaceuticals. Good luck to you!!