Tramadol HCL 100mg(L010,round and white pills) are used to get relief from moderate to severe pain. Tramadol HCL 100mg(L010,round and white pills) were usually preferred to take after surgery . It is always suggested to take Tramadol HCL 100mg(L010,round and white pills) medicine under doctor’s survilience. Thus, it will cause many side effects such as you will start to feel dizzy, sleepy, confused etc. .Thus, to avoid the effects it will always suggest taking Tramadol HCL 100mg(L010,round and white pills) medicine with a doctor's prescription.