What type of pill is white with an A and C on one side and a picture on the other side?

The pill you are describing is likely to be a type of over-the-counter medication, possibly an allergy or cold relief medication. The imprint of "A" and "C" along with a picture could indicate a specific brand or formulation, but without additional details, it's difficult to identify it precisely. To confirm the identity of the pill, you should consult a pharmacist or use a reliable online pill identifier tool.