 [ Symptoms ] i suffer fromswollen lymph nodes joint pain ringing in my ears is it rheumatic heart disease [ Disease ] generic viagra aka sildenafil comes in three different doses 25mg 50mg and 100mg you are taking the maximum recommended and with some facial flushing i would not recommend increasing your dosage take it about 1 hour before any sexual activity there are other side effects if you go over the recommended dosage like light headed and being dizzy etc etc if you are going to think about going over 100mg be sure and ask your dr that give it to you first