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Remodulin Side Effects

Generic name: treprostinil

Medically reviewed by Last updated on Jan 31, 2024.

Note: This document contains side effect information about treprostinil. Some dosage forms listed on this page may not apply to the brand name Remodulin.

Applies to treprostinil: oral tablet extended release. Other dosage forms:

Serious side effects of Remodulin

Along with its needed effects, treprostinil (the active ingredient contained in Remodulin) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking treprostinil:

More common

Get emergency help immediately if any of the following symptoms of overdose occur while taking treprostinil:

Symptoms of overdose

Other side effects of Remodulin

Some side effects of treprostinil may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

For Healthcare Professionals

Applies to treprostinil: inhalation powder, inhalation solution, injectable solution, oral tablet extended release.


Oral tablets: The most frequently reported side effects were headache, diarrhea, nausea, and flushing.

Oral inhalation: The most frequently reported side effects were cough, headache, diarrhea, nausea, dizziness, throat irritation, pharyngolaryngeal pain, and flushing.

Parenteral: The most frequently reported side effects were subcutaneous infusion site pain and reaction, headache, diarrhea, nausea, jaw pain, vasodilation, edema, and hypotension.[Ref]


Very common (10% or more): Infusion site pain (up to 85%), infusion site reaction (up to 83%), Infusion site bleeding/bruising (33.5%)

Frequency not reported: Induration, erythema, infusion site infection

Postmarketing reports: Subcutaneous infusion site abscess[Ref]


Very common (10% or more): Diarrhea (up to 30%), nausea (up to 30%)

Common (1% to 10%): Abdominal discomfort, rectal hemorrhage, melena, vomiting, abdominal pain, dyspepsia

Frequency not reported: Gastrointestinal bleeding[Ref]

Nervous system

Very common (10% or more): Headache (up to 63%)

Common (1% to 10%): Syncope, paresthesia, dizziness[Ref]


Very common (10% or more): Flushing (15%), vasodilation (up to 11%)

Common (1% to 10%): Hypotension, tachycardia, palpitation, hypertension, heart failure, bradycardia, hemorrhage

Frequency not reported: Systemic blood pressure decreased, pallor, right ventricular heart failure, supraventricular tachycardia, hematoma

Postmarketing reports: Thrombophlebitis[Ref]


Very common (10% or more): Rash (up to 83.1%), pruritus (up to 13.6%)

Common (1% to 10%): Contact dermatitis, sweating, ecchymosis, cellulitis

Uncommon (0.1% to 1%): Skin ulcer

Postmarketing reports: Angioedema, macular rash, popular rash[Ref]


Very common (10% or more): Pain in extremity (14%), pain in jaw (up to 13.1%)

Common (1% to 10%): Myalgia, back pain

Uncommon (0.1% to 1%): Neck pain, arthralgia, leg cramp, muscle pain

Postmarketing reports: Bone pain, muscle spasm[Ref]


Very common (10% or more): Cough (54%), throat irritation/pharyngolaryngeal pain (25%)

Common (1% to 10%): Hypoxia, epistaxis, pharyngitis, dyspnea, sinusitis, pulmonary hypertension, rhinitis, hemoptysis

Uncommon (0.1% to 1%): Bronchitis

Frequency not reported: Wheezing, pneumonia[Ref]


Very common (10% or more): Pain (11.9%)

Common (1% to 10%): Edema, infection, flu syndrome, asthenia, overdose, chest pain, fever, peripheral edema

Uncommon (0.1% to 1%): Viral infection, malaise

Frequency not reported: Infection, fatigue, BUN decreased, LDH decreased, bilirubin decreased, swelling arm[Ref]


Common (1% to 10%): Hypokalemia, anorexia, dehydration, gout[Ref]


Common (1% to 10%): Urinary tract infection[Ref]


Common (1% to 10%): Anemia

Frequency not reported: Bleeding, thrombocytopenia, WBC decreased, RBC decreased, hemoglobin decreased, hematocrit decreased, eosinophils increased, platelet count increased[Ref]


Common (1% to 10%): Insomnia, anxiety, depression

Uncommon (0.1% to 1%): Nervousness[Ref]


1. Product Information. Remodulin (treprostinil). United Therapeutics Corporation. 2002.

2. Cerner Multum, Inc. Australian Product Information.

3. Product Information. Tyvaso (treprostinil). United Therapeutics Corporation. 2009.

4. Product Information. Orenitram (treprostinil). United Therapeutics Corporation. 2017.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.