good evening to you...the vagihex pessaries that were given to you is basically for bacterial vaginal infection...it can sometimes cause mouth irritation,alteration in taste, and sometimes one may rarely get a rash at the site of application due to contact allergic dermatitis.... otherwise it doesnt have any other interaction..vaginax vaginal capsules basically contain lactic acid lactate...it mainly helps for replenishing the normal vaginal flora,which is essential to prevent infection...its not to be taken only if you are already known to have reaction to lactic acid....minor side effects can be redness and itching at the site in few individuals....otherwise not to worry...