Certain heart medication (nitrates) must be avoided while taking this product. If in doubt, consult your pharmacist.

Generally, this medication is used only as needed. Important: Follow the instructions on the label. Do not use more of this product, or more often, than prescribed.

This medication does not produce erections by itself. It simply facilitates erections with sexual arousal. It may be taken with or without food. Taking it with a high-fat meal, however, can delay its onset. Consuming alcohol with this product may cause side effects such as dizziness or headaches. Moreover, alcohol consumption may decrease the ability to get an erection. Limit alcohol consumption during treatment.

Avoid grapefruit and grapefruit juice during your treatment. Grapefruit can seriously affect how this medication works.

In addition to its desired action, this medication may cause some side effects, notably:

• it may cause headaches;
• it may cause indigestion;
• it may cause redness of the face;

• it may cause nasal irritation or stuffiness;
• it may cause dizziness - use caution when getting up from a lying or sitting position and use caution if driving;
• it may temporarily affect your ability to perceive colour.

Each person may react differently to a treatment. If you think this medication may be causing side effects (including those described here, or others), talk to your health care professional. He or she can help you to determine whether or not the medication is the source of the problem.

As with most medications, this product should be stored at room temperature. Store it in a secure location where it will not be exposed to excessive heat, moisture or direct sunlight. Make sure that any leftover portion is disposed of safely.