What is the Number One Side Effect of Tramadol? If you have ever been prescribed Tramadol in the UK, the very first thing that would come to your mind is its side effects. It is important to note Tramadol is a painkiller that is used to relieve moderate to severe pain, but as with any drug, it has its consequences in terms of effects on the body. Let us now discuss the most common side effect that the majority of patients encounter and what it implies for you. For more read, Visit: https://www.businessfad.com/what-is-the-number-one-side-effect-of-tramadol