Stearidonic acid (SDA) is an omega-3 fat sourced from plants like echium, black currant seed, and hemp seed oils. The body converts a small amount of SDA into the longer-chain omega-3 EPA, though not as efficiently as taking EPA directly.
People choose SDA as a plant-based alternative to fish oil when they want to support heart health and a normal inflammatory response. Taking it alongside a meal that contains fat helps absorption.
Dosage varies by product and personal need, so follow the label. Mild blood-thinning effects can occur. Anyone on anticoagulant or antiplatelet drugs, and those who are pregnant or nursing, should check with a healthcare provider before using it.