Tramadol
"I have been taking Tramadol capsules for 6 months, deal with severe pain from torn tendons, both ankle and shoulder. Main purpose to help me get a reasonable night's sleep. Two capsules of 50mg taken 7pm have been very successful. There have been no side effects, I have been very satisfied with results.
14 days ago my chemist gave me Tramedo, 50mg capsules, as he did not have Tramadol in stock.... said they were the same. For the first time ever, I accepted replacement product.
After 10 days,  have been sleeping well past normal wake time, been very tired during  rest of day,  gasto problems, have had bruising (?) in the circles under my eyes that looked like blood blisters, and poorer vision.
The supplying company have not returned my call"