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Undecylenic Acid

Antifungal

Also known as: 10-Undecenoic Acid, Undecenoic Acid, Undecylenic acid, 10-Undecenoic acid

C
Grade C
💊 150-500 mg daily🎯 3 primary uses🔗 3 synergies⚠️ Review warnings
Compare Check interactions
Levels upHeart & Longevity+50 pts

Overview

Natural antifungal fatty acid derived from castor oil. Used to support healthy gut flora and combat candida overgrowth.

Primary Uses
Antifungal supportCandida overgrowthGut health

Frequently Asked About Undecylenic Acid

How much Undecylenic Acid should I take?
The typical effective range is 150-500 mg daily. Individual needs vary based on age, body weight, diet, and goals — start at the lower end and adjust based on response. Always consult a healthcare provider before starting a new supplement.
When is the best time to take Undecylenic Acid?
With meals. Consistency matters more than perfect timing — pick a daily anchor (e.g. with breakfast or before bed) and stick with it.
Should I take Undecylenic Acid with food?
Yes.
Does Undecylenic Acid interact with medications?
Yes — known interactions include None significant. If you take any prescription medication, talk to your doctor or pharmacist before starting Undecylenic Acid.
What does Undecylenic Acid pair well with?
Undecylenic Acid stacks well with Probiotics, Caprylic acid, and Oregano oil — these combinations either improve absorption or work synergistically toward common goals.
Who should not take Undecylenic Acid?
Undecylenic Acid should be avoided or used with caution by people with None known. Pregnant or breastfeeding women should consult a healthcare provider before use.
What are the side effects of Undecylenic Acid?
Most people tolerate Undecylenic Acid well. The most commonly reported side effects are GI upset at high doses. Side effects are usually dose-dependent — lowering the dose often resolves them.

Dosage

Typical range
150-500 mg daily
Timing
With meals
With food
Yes
Duration

2-4 weeks typical course

Special Populations

Generally safe for adults

Research & Studies

Search the literature now

We haven’t curated landmark studies for Undecylenic Acidyet — one-click into the primary literature here. PubMed (RCTs) is usually the highest-signal starting point.

Search Undecylenic Acid research
PubMed (RCTs) ↗Randomized trialsPubMed (all) ↗Full literatureCochrane Reviews ↗Systematic reviewsExamine.com ↗Research summaries
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Mechanism of Action

  • • Disrupts fungal cell membranes
  • • Inhibits fungal growth

Evidence Quality

Evidence Grade C

Traditional use with limited clinical trials

Safety & Contraindications

Serious Warnings
  • • None known
Contraindications
  • • None known
Common Side Effects
  • • GI upset at high doses
Pregnancy & Breastfeeding

Avoid - insufficient data

Liver & Kidney Notes

No known issues

Interactions

💊 Medications
  • • None significant
🧪 Supplements
  • • May combine with probiotics
🍽️ Food & Alcohol
  • • Take with food

Stacking & Synergies

Avoid Combining With
None
Best Goal Synergies
Candida protocolGut health

Buying Guide

What to Look For
  • • Calcium undecylenate form
Standardization Markers
Purity
Adulteration risk
Low
Practical Notes
  • • Often combined with other antifungals
  • • Take with meals to reduce GI upset
Tags
antifungalgut healthcandidafatty acid

Top Products with Undecylenic Acid

Highest-scored catalog products containing Undecylenic Acid, ranked by our scoring engine.

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Last reviewed: June 2026 by the Formulate Research Team. Sources cited above; methodology and scoring criteria published here.
Cite this page
Formulate Research Team. (2026, June). Undecylenic Acid — Evidence-Based Supplement Guide. Formulate Supplement Encyclopedia. https://app.formulate-health.app/learning/supplements/undecylenic-acid

Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.