Fish

Best for

Ease joint pain

Large effect, needs confirmation · 1000 mg/day for 12 weeks · 1 study , n=60

7 papers · 4 claims · 26 outcomes scored · 2 positive

Outcomes

What fish actually does, by outcome

Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.

Outcome Effect size Evidence Dose Weeks Rank

Ease joint pain Large effect, needs confirmation

Your joints stop being the first thing you notice every morning.

1 RCT n=60 1000 mg 12 wk #8/18

37735385

large

1 RCT n=60

1000 mg

12 wk

#8 /18

Raise omega-3 levels Likely modest benefit

EPA and DHA build up in blood and cell membranes where they work.

2 RCTs n=297 — 8–12 wk #3/6

29372051·29475446

small

2 RCTs n=297

—

8–12 wk

#3 /6

Build stronger infant brain wiring Not enough research

Early-life nutrition shapes cognition, attention, and visual processing.

1 RCT n=112 400 g 16 wk

32746774

trivial

1 RCT n=112

400 g

16 wk

—

Raise good cholesterol levels Not enough research

Boosts the cholesterol that pulls fat out of artery walls.

1 RCT n=— — 12 wk

24587337

—

1 RCT n=—

—

12 wk

—

Outcome	Effect	Evidence	Dose	Weeks	Rank
Ease joint pain Large effect, needs confirmation	large	1 RCT n=60	1000 mg	12 wk	#8/18
Raise omega-3 levels Likely modest benefit	small	2 RCTs n=297	—	8–12 wk	#3/6
Build stronger infant brain wiring Not enough research	trivial	1 RCT n=112	400 g	16 wk	—
Raise good cholesterol levels Not enough research		1 RCT n=—	—	12 wk	—

Risk profile

Adverse events and known drug interactions

Safety events

Dizziness, vomiting, headache, fatigue (reported adverse effects)

headache

Co-studied with

Supplements that share evidence with fish

Sources

Generated August 14, 2026

Fish

What fish actually does, by outcome

Adverse events and known drug interactions

Supplements that share evidence with fish

More evidence for Fish

Boswellia

Chondroitin Sulfate

Creatine

Glucosamine (unspecified)

Krill

Glucosamine for Joint Health: A Systematic Evidence Review

Fish

More evidence for Fish

NewBoswellia

NewChondroitin Sulfate

NewCreatine

NewGlucosamine (unspecified)

NewKrill

NewGlucosamine for Joint Health: A Systematic Evidence Review

Boswellia

Chondroitin Sulfate

Creatine

Glucosamine (unspecified)

Krill

Glucosamine for Joint Health: A Systematic Evidence Review