This medication is typically used for pulmonary hypertension (a condition in which the pressure in the blood vessel leading from the heart to the lungs rises above normal levels). It requires a few weeks to take effect.
Certain heart medication (nitrates) must be avoided while taking this product. If in doubt, consult your doctor or pharmacist.
This medication is typically used only once a day. However, your doctor or pharmacist may have suggested a different schedule that is more appropriate for you. Take it regularly and continuously to maintain its beneficial effects.
Important: Follow the instructions on the label. Do not use more of this product, or more often, than prescribed. This medication may be taken with or without food.
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:
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 doctor or pharmacist. 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. Keep it out of reach of young children. Make sure that any leftover portion is disposed of safely.
This medication may interact with other medications or supplements, sometimes significantly. Many interactions, however, may be dealt with by a dosage adjustment or a change in medication schedule. Check with your pharmacist before using this medication in combination with any other medications (including non-prescription products), vitamins or natural products.
It is important to tell the health professionals you consult: