This medication is typically used only once a day. However, your pharmacist may have suggested a different schedule that is more appropriate for you. It is not advisable to stop using this product suddenly, particularly if you have been on it for several weeks. If you are considering stopping the medication, talk to your pharmacist first.

It must be used regularly and continuously to maintain its beneficial effects. Be sure to keep an adequate supply on hand. If you remember missing a dose within 12 hours of the time it is usually taken, take it as soon as you remember, then take the next dose at the regularly scheduled time. If the dose is missed by more than 12 hours, skip the missed dose. Do not double the next dose to catch up.

This medication may be taken with or without food. Consult your pharmacist before consuming grapefruit or grapefruit juice during treatment. Grapefruit may change the effect of this drug in some people.

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

• it may cause headaches;
• it may cause unusual tiredness;
• it may cause nausea or, rarely, vomiting;

• it may cause dizziness - use caution when getting up from a lying or sitting position and use caution if driving;
• it may cause redness of the face;
• it may cause leg swelling or water retention.

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.