I have been taking Alli pills that are 5 months old and I haven't noticed anything painful or unusual. I am assuming they are just not as effective because they are old and I have not seen any 'treatment effects' when I was almost certain I would.
I am not sure if there are any serious side effects but nothing has happened to me thus far.
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Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them