A detailed list of opioids and their effects is available from Opioids.net, Drugs.com and Healthline. In the websites for Drugs.com and Healthline, a person can link to the name of a drug and find a page describing its effects and how to take it.
Drugs.com also has the brand and generic name for the drug, as noted on Drugs.com. Morphine, for example, is sold under the names Astamorph PF, Roxanol, Infumorph and MSIR, among others. Searching under the generic name morphine sends the reader to the page on the drug. This page tells the reader the drug's classification, its uses, its side effects, and its dosage and interactions with other drugs.