Dry eye disease
Do omega-3 supplements relieve dry-eye symptoms?
A large trial found no advantage over its control, while pooled reviews report varied results across dry-eye causes and formulations. A universal benefit is not established.
Updated September 24, 2026 · Editorial attribution: PV Griscom, M.Sc. · Independent clinical review pending
The question behind the headline
Adults with dry eye; systemic supplements versus control oils, with varied underlying causes.
What the finding does—and doesn’t—tell us
DREAM and more recent reviews answer overlapping but nonidentical questions. Tear-test improvement is not necessarily noticeable symptom relief.
Read the underlying research.
- n-3 Fatty Acid Supplementation for the Treatment of Dry Eye Disease. · 2018 ↗
- The effects of different forms of omega-3 polyunsaturated fatty acids on dry eye disease resulting from various etiologies: a meta-analysis and systematic review. · 2026 ↗
Selected sources, not an exhaustive reference list. Rating draws on published results and review summaries; no independent full systematic review has been conducted. Source publication dates may precede this page’s update date.
Three questions to take forward
- Was the study population similar to the person or situation I have in mind?
- Did it measure an outcome people feel or experience, or only a laboratory marker?
- How do formulation, usual care, absolute benefit and adverse effects change the interpretation?
Study doses describe experiments; they are not personal dosing advice. Explore safety and limitations ↗