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Turmeric

Turmeric

Best for

Ease indigestion and heartburn

Large effect, needs confirmation · 500–1500 mg/day for 4–13 weeks · 1 meta-analysis , n=211

110 papers · 13 claims · 206 outcomes scored · 12 positive

Evidence overview

Evidence overview Likely benefit

Turmeric provides likely benefit for joint pain and arthritis symptoms, with the clearest evidence in osteoarthritis and inflammatory arthritis, while other uses are less consistent.

  • Across 7 studies (n=1,433), turmeric reduced joint pain, and 10 studies (n=4,793) also improved arthritis symptoms.3
  • Turmeric's evidence base spans 110 papers and 206 outcomes, with benefit signals centered on joints.
  • Bioavailability is a real issue, and piperine increases curcumin absorption in humans.5

Outcomes

What turmeric 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 Evidence Dose Weeks Rank
Ease indigestion and heartburn Large effect, needs confirmation
large 		3 meta-analyses n=211 Meta-analyzed 500–1500 mg 4–13 wk #4/11
Ease psoriasis plaques Large effect, needs confirmation
large 		1 meta-analysis n=78 Meta-analyzed 80–6000 mg 12 wk #1/2
Ease arthritis pain and joint inflammation Likely benefit
moderate 		10 meta-analyses n=4.8k Meta-analyzed 90–2000 mg 8–52 wk #2/21
Ease joint pain Likely benefit
moderate 		7 meta-analyses n=1.4k Meta-analyzed 90–2000 mg 8–26 wk #3/18
Ease rheumatoid arthritis symptoms Likely modest benefit
small 		4 meta-analyses n=906 Meta-analyzed 80–6000 mg 10–20 wk #1/6
Fall asleep faster Faint early signal
small 		4 RCTs n=225 400–500 mg 4–12 wk #6/19
Improve overall digestive comfort Faint early signal
small 		2 RCTs n=101 500–1500 mg 8–13 wk #2/9
Reduce everyday pain intensity Proven but unnoticeable
trivial 		16 meta-analyses n=12k Meta-analyzed 120–4000 mg 1–20 wk —
Loosen stiff joints Proven but unnoticeable
trivial 		5 meta-analyses n=3.0k Meta-analyzed 90–2000 mg 13–20 wk #5/9
Lower day-to-day anxiety Proven but unnoticeable
trivial 		3 meta-analyses n=1.3k Meta-analyzed 80–3000 mg 8 wk #10/48
Ease anxiety in older adults Proven but unnoticeable
trivial 		3 meta-analyses n=1.3k Meta-analyzed 80–3000 mg 8 wk #10/45
Reduce pre-competition anxiety Proven but unnoticeable
trivial 		3 meta-analyses n=1.3k Meta-analyzed 80–3000 mg 8 wk #10/45
Break the insomnia cycle Probably doesn't help
trivial 		1 RCT n=117 500 mg — —

Forms & standardisation

The best-studied products are standardized curcumin or curcuminoid extracts, not plain turmeric powder. On a label, look for the word curcumin or curcuminoids, plus a stated amount per serving, because the evidence base mostly tracks those forms12. Combo formulas with piperine show up a lot because they boost absorption, but that same feature also drives more drug-interaction baggage5.

Risk profile

Adverse events and known drug interactions

Safety events

Bleeding / hemorrhage (excessive bleeding) severe
hepatotoxicity severe
jaundice severe
hepatotoxicity_by_usnic_acid severe
dystocia severe
hospitalization severe
seminiferous_tubule_atrophy severe
oligospermia severe

Drug interactions

Drug:Warfarin major increases effect
Everolimus major decreases concentration
Cyclosporine major decreases concentration
Tacrolimus major increases concentration
Indinavir major decreases concentration
Ritonavir major decreases concentration
Carbamazepine major decreases concentration
Vinblastine major decreases concentration
Digoxin major increases concentration
Doxorubicin major increases concentration

Co-studied with

Supplements that share evidence with turmeric

Frequently asked

Common questions

What is the difference between turmeric and curcumin?

Turmeric is the yellow root powder, and curcumin is the best-known active compound inside it. Most human trials use concentrated curcumin or curcuminoid extracts, because plain turmeric spice does not deliver the same dose15.

How long does turmeric take to work for joint pain?

The joint-pain trials usually run for 8 to 12 weeks, and that is the window where the clearest signal shows up23. If you stop after a few days, you miss the part where the studies actually saw change.

Should you take turmeric with piperine?

Piperine shows up because it boosts curcumin absorption, which is the main problem with turmeric supplements in the first place5. The tradeoff is that piperine also changes drug handling, so it is not a harmless add-on if you take prescription meds5.

Does turmeric work for digestion too?

The human data for indigestion and reflux looks interesting, with studies using 500 to 1,500 mg/day for about 8 to 13 weeks4. That said, the evidence still trails the joint-pain data, so it belongs in the 'worth watching' bucket, not the front row.

Sources

  1. 1. Curcumin and inflammatory signaling, review of human and mechanistic evidence (2007) ↑
  2. 2. Curcuminoids in knee osteoarthritis, randomized placebo-controlled trial (2013) ↑
  3. 3. Curcumin for osteoarthritis pain, systematic review and meta-analysis (2020) ↑
  4. 4. Curcumin for functional dyspepsia symptoms, randomized trial (2014) ↑
  5. 5. Curcumin absorption and the role of piperine, bioavailability review (2015) ↑
  6. 6. Curcumin and anxiety symptoms, randomized controlled trial (2015) ↑

Generated May 15, 2026

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