NHS medicines information on dosage for tramadol, how to take it and what to do if you miss a dose or take too much. Tramadol is an opioid analgesic drug used to treat moderate to moderately severe pain. It works similar to morphine. Tramadol can be highly addictive, and if you stop taking the drug abruptly it may cause withdrawal symptoms. Examples of side effects of tramadol are upset stomach, constipation, and headache, but they usually are temporary. Tramadol ER is used to treat chronic pain that can't be managed with other pain relievers. Learn about its side effects, cost, dosage, and interactions. The maximum recommended daily dose of tramadol hydrochloride is 400 mg for immediate-release formulations and 300 mg for extended-release formulations in adults with normal hepatic and renal function. 1, 2, 3, 4 Tramadol, sold under the brand name Tramal among others, [19][1] is an opioid pain medication and a serotonin–norepinephrine reuptake inhibitor (SNRI) used to treat moderate to severe pain. [15][19] When taken by mouth in an immediate-release formulation, the onset of pain relief usually begins within an hour. [15] It is also available by injection. [20] It is available in combination with. Ensure safe tramadol use with our comprehensive guide on how much tramadol can I take at once. Learn about dosages, risks, and emergency responses. The tramadol dosage calculator informs you about the recommended dosage of tramadol for a patient of a given age and indication. Detailed Tramadol dosage information for adults, the elderly and children. Includes dosages for Pain and Chronic Pain; plus renal, liver and dialysis adjustments. Tramadol is an opioid medication that may be used to treat moderate to moderately severe chronic pain in adults, including pain after surgery. However, elderly patients are more likely to have unwanted side effects (eg, constipation, lightheadedness, dizziness, or fainting, stomach upset, weakness) and age-related liver, kidney, heart, or lung problems, which may require caution and an adjustment in the dose for patients receiving tramadol.