I tried 5 Brands of tramadol. one was the yellow and green tramacap capsules, another was trexol which is a mexican brand from medsmex, 3 others from US Pharmacies. keep in mind, im a very sensitive person very aware of my subjective state and can feel tiny peices of a pill of certain drugs. the 5 brands of tramadol i tried had absolutely no difference at all that i could tell.

There has to be another factor. perhapes yours were old or stored in a hot place or i have no idea at all, but there is no difference between brands except for the amount of tramadol in them. perhapes one brand has 50.8 mg of tramadol and another brand has 50.1 mg, thats about it