Fatty Acid
SDA (Stearidonic Acid)
Also known as: Stearidonic acid, Stearidonic, SDA omega-3, Ahiflower
B
Evidence
A plant-based omega-3 that converts to EPA 3-5x more efficiently than ALA. Found in ahiflower and echium oils, making it the most efficient plant omega-3 for EPA production.
Primary uses
- Plant-based EPA production
- Anti-inflammatory support
- Cardiovascular health
- Vegan omega-3
How it works
- Bypasses rate-limiting delta-6-desaturase step
- Converts to EPA at 3-5x efficiency of ALA
- Incorporated into cell membranes
- Reduces inflammatory eicosanoids
Dosage
- Typical range
- 500-2000 mg daily
- Timing
- With meals
- With food
- Yes, improves absorption
- Duration
- Ongoing supplementation for benefits
- Special populations
- Vegans seeking meaningful EPA levels
Forms
- Ahiflower oil
- Echium oil
- Softgel
Safety
Common side effects
- Generally well tolerated
Contraindications
- None specific
Evidence notes
Emerging research shows efficient conversion to EPA
Grade B: Some human trials support key claims; further confirmation needed.
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