I long ago joined the crowd that reports the Mallies causing unpleasant side effects and reduced effectiveness, when compared to either Norco or other generics.

Mallies give me gas, and they leave a funny lingering taste in my mouth. Etc, etc etc. Lots of people have similar reactions.

However, I have never noticed any difference at all between Norcos and Watsons. The Watsons may very well contain lower quality 'gradients" or binders or whatever, but my feeling is that they are a virtually identical product