Your doctor will prescribe the dose of Tyvaso that is right for you. He or she may start you on a low dose and gradually increase your dose until you reach the target dose of 9 breaths, 4 times daily.

The recommended starting dose is

3 breaths

of Tyvaso per treatment session

Each session can be completed in as little as

2 to 3 minutes

Sessions should occur

4 times daily
at regular intervals
during waking hours—
about 4 hours apart

Your doctor will gradually increase your dose. In the clinical trial, the majority of patients reached the target dose of

9 breaths, 4 times daily

in about 3 weeks

If you experience adverse events, you should contact your doctor or healthcare provider and continue to use Tyvaso at the highest dose you can tolerate.

Next: Learn Approaches to Help Manage the Most Common Side Effects


Before you take Tyvaso, tell your healthcare provider about all of your medical conditions, including if you:

It is important to tell your healthcare provider about all the medicines you may be taking, including prescription and non-prescription medicines, vitamins, and herbal supplements, as they may affect your use of Tyvaso by increasing the risk of side effects or decreasing effectiveness. Especially tell your healthcare provider if you take any of these medicines:

The most common side effects of Tyvaso are coughing, headache, throat irritation and pain, nausea, reddening of the face and neck (flushing), and fainting or loss of consciousness. These are not all the possible side effects of Tyvaso. Tell your healthcare provider about any side effects that bother you or do not go away. Your healthcare provider may be able to help you manage the side effects.


Tyvaso is a prescription medicine used in adults to treat pulmonary arterial hypertension (PAH) (WHO Group 1), which is high blood pressure in the arteries of your lungs. Tyvaso can improve exercise ability in people who also take bosentan (an endothelin receptor antagonist, (ERA)) or sildenafil (a phosphodiesterase-5 (PDE-5) inhibitor). Your ability to do exercise decreases 4 hours after taking Tyvaso.

The effects of Tyvaso are unknown in patients under 18 years of age.


Please see the Full Prescribing Information, Patient Package Insert, and the Tyvaso Inhalation System Instructions for Use manual.

For additional information about Tyvaso, visit or call 1-877-UNITHER (1-877-864- 8437).

Call your healthcare provider for medical advice about side effects. You may report side effects to the FDA at or call 1-800-FDA-1088.

This information is provided for an informational purpose and is not intended as treatment advice. Patients should consult a healthcare professional for treatment advice.