PlainPill

DHA

People mainly take DHA for focus, memory, mood. Based on 45 first-hand reports and 365 meta-analyses & systematic reviews in the medical literature. Ranked #274 of 1,974 overall.

36
User score
Mostly positive
29% positive4% mixed4% negative62% unclear

Of reports that state an outcome, 78% are positive.

Clinical research
AStrong research base
365
meta-analyses
1,607
RCTs
21,529
papers

What DHA does, according to users

Of the people who reported each effect, the share who said it got better.

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

AStrong research base

3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.

Neuropsychopharmacology · 2018 · Meta-analysis / systematic review
Omega-3 Polyunsaturated Fatty Acids in Youths with Attention Deficit Hyperactivity Disorder: a Systematic Review and Meta-Analysis of Clinical Trials and Biological Studies

Conclusion: In summary, there is evidence that n-3 PUFAs supplementation monotherapy improves clinical symptoms and cognitive performances in children and adolescents with ADHD, and that these youth have a deficiency in n-3 PUFAs levels. Our findings provide further support to the rationale for using n-3 PUFAs as a treatment option for ADHD.

PubMed 28741625 ↗
Nutrients · 2021 · Meta-analysis / systematic review
Nutrient Intake and Status in Adults Consuming Plant-Based Diets Compared to Meat-Eaters: A Systematic Review

Conclusion: There were nutrient inadequacies across all dietary patterns, including vegan, vegetarian and meat-based diets. As plant-based diets are generally better for health and the environment, public health strategies should facilitate the transition to a balanced diet with more diverse nutrient-dense plant foods through consumer education, food fortification and possibly supplementation.

PubMed 35010904 ↗

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

dailyas reported
1.5 gdaily
>2 gdaily
1000 mgas reported
500-1000 mgonce or twice per day
3 gas reported

Reported side effects

How often each side effect came up across all reports.

No side effects reported so far.

What users say

Verbatim quotes, shortened only — each links to the original discussion.

Other options for focus

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate