I can tell you exactly what they are. These pills are a controlled substance (I believe they are considered 'Schedule IV' in the US, you can look up info about the Drug Schedules @ FDA.GOV). I bought some of these easily on the Internet, and was not asked to provide any medical info or required to provide a prescription. It was sold to me under the name "Darvon", as it is known in the US. The ingredients are Dextropropoxyphene and Paracetamol(aka,
Acetaminophen). It is not
hydrocodone, but it is an opiate, though one of the weaker ones.