Darvocet-N 100 or Darvocet N-100?

In fact, does it really matter? In both cases a mixture of acetaminophen 650 mg and propoxyphene napsylate 100 mg is meant. Just to be more precise, let us determine that the letter 'N' in the drug's name corresponds to napsylate salt of propoxyphene in Darvocet, which is different from the formulation with hydrochloride salt of propoxyphene. As a result, we get a special formula of Darvocet-N, a drug with special features and effects different from "common" Darvocet. The number '100' corresponds to 100 mg of propoxyphene napsylate, but the letter 'N' seems to be of more importance in this case. This 'N' turns ''regular'' Darvocet into ''special'' Darvocet-N. So, let us spell the drug's name in the right way: Darvocet-N 100.