Edited sentence: Common side effects include vomiting, nausea, slowed heart rate, and sweating.Dependence is uncommon, but possible, and users usually must take a higher dose each time to achieve a "trip".Exceedingly high doses (500mg+) cause effects including euphoria, dizziness, blurred vision, hallucinations, and numbness.First time users can experience these effects with little as 150mg, and experienced users may require  a gram or more.Long term users who suddenly stop may experience withdrawal symptoms similar to other opiates, including craving for the drug, restlessness, bone pain, depression, nausea, insomnia, and goose bumps (cold-turkey) (Long term users who suddenly stop may experience withdrawal symptoms similar to other opiates, including craving for the drug, restlessness, bone pain, depression, nausea, insomnia, and goose bumps (cold-turkey) ([Long term users who suddenly stop may experience withdrawal symptoms similar to other opiates, including craving for the drug, restlessness, bone pain, depression, nausea, insomnia, and goose bumps (cold-turkey) (from Infofacts.Many compare it to a cross of Xanax® and OxyContin®.Other side effects include hypothermia, depressed breathing, faster heart rate (at high doses), and seizures.Tramadol is sometimes used recreationally, especially amongst teens, due to its opioid-like effect