Tramadol is a prescription pain medication that is used to treat moderate to severe pain in adults.it's legal and easy to buy Tramadol online no prescription is needed. It belongs to a class of drugs called opioid agonists and works by changing the way your brain and nervous system respond to pain. Tramadol is available in immediate-release and extended-release formulations and is typically taken orally in tablet or capsule form. It is available in four different variants:- Tramadol 50 mg, 100mg, 200mg, 37.5/325mg.