Pulmonary hypertension:

Indications for: TYVASO

To improve exercise ability in patients with: pulmonary arterial hypertension (WHO Group 1) with NYHA Class III symptoms; and pulmonary hypertension associated with interstitial lung disease (WHO Group 3).

Adult Dosage:

Give 4 separate treatment sessions each day approximately 4hrs apart, during waking hours. ≥18yrs: Initially 3 breaths (18mcg) per treatment session; if not tolerated, reduce to 1–2 breaths, and then subsequently increase to 3 breaths as tolerated. Maintenance: may increase by an additional 3 breaths at 1–2 week intervals, if tolerated, to target doses of 9–12 breaths per session.

Children Dosage:

<18yrs: not established.

TYVASO Warnings/Precautions:

Risk of symptomatic hypotension in those with low systemic arterial pressure. Hepatic insufficiency; titrate slowly. Risk of bleeding. Asthma, COPD, or other bronchial hyperreactivity. For Tyvaso Inhalation Solution: avoid contact with eyes and skin, oral ingestion. Elderly. Pregnancy. Nursing mothers.

See Also:

TYVASO Classification:

Prostacyclin analogue.

TYVASO Interactions:

Do not use with other medications. May be potentiated by CYP2C8 inhibitor (eg, gemfibrozil). May be antagonized by CYP2C8 inducer (eg, rifampin).

Adverse Reactions:

Cough, headache, nausea, diarrhea, dizziness, flushing, throat irritation, pharyngolaryngeal pain, syncope, dyspnea; symptomatic hypotension, bleeding, bronchospasm.


Hepatic (CYP2C8). 91% plasma protein bound.

Drug Elimination:

Renal (79%), fecal (13%). Half-life: ~4 hours (Tyvaso Inhalation Solution); 27–50 minutes (Tyvaso DPI).

Generic Drug Availability:


How Supplied:

Ampules (2.9mL)—4; Starter Kit—1 (28 ampules with inhalation system); Refill Kit—1 (28 ampules with accessories); DPI Titration Kit—1 (112 cartridges [16mcg] + 84 cartridges [32mcg] w. 5 inhalers); (112 cartridges [16mcg] + 112 cartridges [32mcg] + 28 cartridges [48mcg] w. 5 inhalers); DPI Maintenance Kit—1 (112 cartridges [16mcg, 32mcg, 48mcg, or 64mcg] w. 5 inhalers); (112 cartridges [32mcg] + 112 cartridges [48mcg] w. 5 inhalers)