Abstract: A method, apparatus and computer program product for authenticating a pharmaceutical product is provided. The method includes receiving an identifier and a quantity for the pharmaceutical product and receiving a photonic signal from the pharmaceutical product, wherein the photonic signal includes a frequency and amplitude. The method can further include searching for the identifier and quantity that was received in a predefined list comprising identifier-quantity pairs, wherein a frequency and amplitude corresponds to each identifier-quantity pair. The method can further include matching the identifier and quantity that was received to a first identifier-quantity pair in the list. The method can further include storing a record indicating that the pharmaceutical product is counterfeit if the frequency and amplitude of the photonic signal does not match the frequency and amplitude corresponding to the first identifier-quantity pair.