You seem to be having multiple oral problems including cavities in different eat as well as generalized gum inflammation. Instead of trying random medications (which are never going to help in oral problems other than acting as temporary symptomatic relievers), you should go for a proper clinical examination by a dentist so that all the teeth with cavities and their defence stages can be identified. The treatment will depend upon the depths of the cavity and can vary from a simple filling to root canal treatment followed by a cap. Gum inflammation will require a procedure called as scaling to remove the deposits which tooth brushing cannot remove. After that the results can be maintained if you follow the oral care instructions given by a dentist meticulously. Also gum astringent should be avoided for a long term use because they do not cure the problem of bleeding gums but only provide temporary relief. Regards