Read the instructions carefully before taking Sildenafil and each time you receive a refill of your medication. Do not use more of it, and do not use it more than your doctor orders. Excessive consumption increases the likelihood of side effects.
If you are taking Sildenafil for erectile dysfunction, your doctor will start you with an average dose of the medication and increase or decrease your dose depending on your reaction to the medication. Do not mix liquids with other medications to add flavor to the medicine. Tell your doctor if the medication is not working or if you have any side effects.