DHA 250
Research Reliability -
A focused DHA supplement supporting brain development, visual function, and cognitive health across all life stages.
Appetite
Mood
Sleep
DHA 250
Description
DHA (docosahexaenoic acid) is the dominant structural omega-3 fatty acid in the brain and retina, making it absolutely critical for neurological development and visual acuity. Demand for DHA is highest during pregnancy and early childhood but remains important throughout life for maintaining cognitive function, reducing dementia risk, and supporting retinal health. This 250 mg dose is particularly well-suited for prenatal supplementation or use alongside a separate EPA supplement when targeting brain and eye health specifically. Derived from high-quality fish oil with rigorous purity standards.
Effects
First weeks
no felt change
Weeks 4–8
Ongoing
How It Feels
DHA is a structural brain and eye nutrient, not something you feel working. Its value is long term and especially relevant in pregnancy and aging. Expect nothing acute.
Evidence
Evidence Strength
Moderate (some human RCTs)
Caveats
Best evidence is in maternal/infant neurodevelopment and triglyceride reduction; general cognitive-enhancement claims in healthy adults are more preliminary.
Usage
Commonly Referenced Starting Amount
250 mg DHA/day
Commonly Referenced Amount
250–500 mg DHA/day covers general cognitive and prenatal-support research
Referenced Upper Limit
No specific DHA-only upper limit has been established separate from the general omega-3 guidance above
Onset
4–8 weeks (brain/lipids)
Biomarkers to Track
Subjective
(Daily)
Mental clarity and focus (1–10)
Memory recall and retention
Mood and emotional resilience
Objective
(Quarterly)
Omega-3 index (DHA in RBC)
Cognitive assessment score
hs-CRP (inflammation marker)
Very safe and especially valuable in pregnancy.
Almost no one, though blood-thinner users should note the mild effect at high doses.
Expecting to feel it, since its role is structural.
Disclaimer
This information is for educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare provider before starting any new supplement, especially if you are pregnant, nursing, taking medication, or managing a health condition.
Koletzko B et al. (2008). British Journal of Nutrition. Review (DHA and maternal/infant neurodevelopment). PMID: 18752720.
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