Hydrocodone 10-660 mg is a medication prescribed for the treatment of moderate to severe pain. It is one of the most prominent opioid analgesics that has been in use for a considerable duration. This medication offers relief from pain caused by fractures and surgical operations. It is available in tablet form for oral intake by patients experiencing various pain types. The white M362 pill is an opioid that may result in side effects for some users. The side effects of Hydrocodone 10-660 mg can include dizziness, nausea, vomiting, constipation, lightheadedness, and drowsiness.