Find a comprehensive guide to possible side effects including common and rare side effects when taking Flexeril (Cyclobenzaprine Hcl) for healthcare professionals and. Find information about common, infrequent and rare side effects of Tramadol Oral. Tramadol is used primarily to treat mild to severe pain, both acute and chronic. Its analgesic effects take about one hour to come into effect and 2 to 4 h to peak. Learn about the potential side effects of tramadol. Includes common and rare side effects information for consumers and healthcare professionals. Find patient medical information for Tramadol Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Tramadol is a narcoticlike pain reliever that can be used to reduce moderate to severe pain and requires a prescription from a veterinarian. Tramadol and hydrocodone are two strong prescription pain medications. They relieve pain but come with side effects. See their differences and similarities. Tramadol is a narcoticlike pain reliever used to treat moderate to severe pain. Fatal side effects can occur if you use this medicine with alcohol, or with other. If you have any side effects from tramadol, let your doctor know right away. The most common side effects are dizziness, nausea, constipation, and headache. Find a comprehensive guide to possible side effects including common and rare side effects when taking Cymbalta (Duloxetine Hcl) for healthcare professionals and.