If you miss a pill, vomit within 2 hours of taking a pill, have severe diarrhoea, or take certain medications it might only be 93 effective.
Tooth decay is one of the more common reasons for discolored teeth, and it can often be prevented with the proper care.
Adjust dose according to prescribing information if needed.
Data from clinical trials shows that the risk of experiencing side effects from sildenafil increases with dosage.