Data Context: What We Actually Know
Important: data limitations
Side effect data is primarily based on clinical trials of intravenous aviptadil in critically ill patients. The side effect profile of inhaled aviptadil may differ. Long-term safety data is limited.
Side Effects by Severity
MildModerateSevere / Serious
HypotensionModerate
Frequency: Common
Dose-dependent blood pressure reduction due to systemic vasodilation; most significant with IV infusion. Requires careful blood pressure monitoring.
DiarrheaMild
Frequency: Common
VIP stimulates intestinal secretion; loose stools reported in 15-30% of patients.
TachycardiaMild
Frequency: Common
Reflex increase in heart rate secondary to vasodilation-induced blood pressure drop.
FlushingMild
Frequency: Common
Facial and upper body flushing related to vasodilatory effects, typically transient.
Severe hypotensionSevere / Serious
Frequency: Rare
Rapid IV administration can cause clinically significant drops in blood pressure requiring vasopressor support.
Contraindications
- ✕Hypersensitivity to aviptadil or any components of the formulation
- ✕Pre-existing severe hypotension
Drug Interactions
No formal pharmacokinetic drug interaction studies have been conducted for most research peptides. The interactions below are theoretical, mechanism-based, or derived from limited case reports.
- ⚠Antihypertensive medications: May potentiate hypotensive effects
- ⚠Vasodilators: Increased risk of hypotension
- ⚠Phosphodiesterase-5 inhibitors (e.g., sildenafil): May potentiate vasodilatory effects
Frequently Asked Questions
What are the most common side effects of aviptadil?
The most common side effects of aviptadil include hypotension, diarrhea, tachycardia, and flushing. Hypotension is the most significant concern, especially with intravenous administration.
How can hypotension be managed during aviptadil infusion?
Hypotension can be managed by carefully monitoring blood pressure, reducing the infusion rate, or temporarily pausing the infusion. Vasopressor support may be required in cases of severe hypotension.
Is aviptadil safe for patients with heart conditions?
Aviptadil should be used with caution in patients with heart conditions, as it can cause tachycardia and hypotension, which may exacerbate existing cardiovascular issues. Continuous cardiac monitoring is recommended.
Can aviptadil cause allergic reactions?
Hypersensitivity reactions to aviptadil are rare but possible. Patients with known allergies to similar peptides should be monitored closely.
Are there any long-term side effects associated with aviptadil?
Long-term side effects of aviptadil are not well-established, as the drug is typically used for short-term treatment of acute conditions like ARDS. More research is needed to assess long-term safety.
Can aviptadil be used during pregnancy or breastfeeding?
The safety of aviptadil during pregnancy and breastfeeding has not been established. It should only be used if the potential benefits outweigh the risks.
References
- 1Inhaled aviptadil for the treatment of moderate and severe COVID-19: a phase 2/3 randomized trial(2020)PubMed ↗
- 2Aviptadil (synthetic VIP) in COVID-19 respiratory failure: clinical outcomes and mechanism(2021)PubMed ↗
- 3Vasoactive intestinal peptide and lung disease: rationale for aviptadil therapy in ARDS(2020)PubMed ↗
- 4
- 5
Last updated: 2026-02-19