Heterobasidiomycetes, including the jelly, rust and smut fungi; Previously the entire Basidiomycota were called Basidiomycetes, an invalid class level name coined in 1959 as a counterpart to the Ascomycetes, when neither of these taxa were recognized as divisions.
Too much of anything is bad is general rule of thumb. I found several articles which favour eating peppermint and detail side effects of over consumption. But in general there are some side effects of eating altoids and other mint gums. Mouth sores, headaches, stomach burns are few of them. Check out following links for more information. peppermint: Uses, Side Effects, Interactions and Warnings.
Non-steroidal anti-inflammatory drugs (NSAIDs) such as Advil should be taken with food, as they can diminish the protective barrier lining the stomach and make it more susceptible to the development of ulcers. NSAIDs should not be used if you have any history of peptic ulcer disease or kidney disease.