Sildenafil
Also sold as: Viagra
Prescription neededBladder, prostate and men's health
Comes as:Tablet
Also sold as: Viagra
For erection problems: usually 50 mg about 1 hour before sex, not more than once a day; the doctor may change it to 25 or 100 mg. Never take it with nitrate heart medicines.
Your doctor may give you a different dose. Children's doses depend on weight.
Stop taking it and see a doctor straight away if you notice:
Medicines that can react with this one.
Can cause a dangerous drop in blood pressure; never use together.
Can cause a dangerous drop in blood pressure; never use together.
Can cause a dangerous drop in blood pressure; never use together.
Together they can cause low blood pressure and dizziness; start sildenafil at a low dose.