This medication is typically used only once a day. However, your pharmacist may have suggested a different schedule that is more appropriate for you. Important: Follow the instructions on the label. Do not use more of this product, or more often, than prescribed.

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 18 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 18 hours, skip the missed dose. Do not double the next dose to catch up.

This medication may be taken with or without food.

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 diarrhea;
• it may cause nausea or, rarely, vomiting.

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.

To remain effective, this product must be kept in its original packaging. Do not transfer it to another container. 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.