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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 summary

Evidence summary

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.

Ease indigestion and heartburn Large effect, needs confirmation

Less upper-stomach heaviness, burning, and acid discomfort after eating.

3 meta-analyses n=211 500–1500 mg 4–13 wk #4/11
37323050·40647170·33478482
Ease psoriasis plaques Large effect, needs confirmation

Thinner, less red, and less widespread patches over time.

1 meta-analysis n=78 80–6000 mg 12 wk #1/2
35979355
Ease arthritis pain and joint inflammation Likely benefit

Less pain, less stiffness, quieter inflammatory signals inside the joint.

10 meta-analyses n=4.8k 90–2000 mg 8–52 wk #2/21
29316908·29622343·31351488·34017975 +6 more
Ease joint pain Likely benefit

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

7 meta-analyses n=1.4k 90–2000 mg 8–26 wk #3/18
29316908·29622343·29951592·34017975 +3 more
Ease rheumatoid arthritis symptoms Likely modest benefit

Mornings start with movement instead of waiting for your joints to thaw.

4 meta-analyses n=906 80–6000 mg 10–20 wk #1/6
35935936·37325651·35979355·41327719
Fall asleep faster Faint early signal

Shrinks the gap between hitting the pillow and actually sleeping.

4 RCTs n=225 400–500 mg 4–12 wk #6/19
38106634·32512782·35719707·38082237
Improve overall digestive comfort Faint early signal

Less cramping, rumbling, and unease throughout your gut.

2 RCTs n=101 500–1500 mg 8–13 wk #2/9
33478482·40647170
Reduce everyday pain intensity Proven but unnoticeable

Lower intensity, fewer flares, and longer stretches of relief.

16 meta-analyses n=12k 120–4000 mg 1–20 wk
33478482·35458170·35935936·36261810 +12 more
Loosen stiff joints Proven but unnoticeable

Joints move more freely, especially after rest or first thing in the morning.

5 meta-analyses n=3.0k 90–2000 mg 13–20 wk #5/9
34017975·35935936·36261810·40731001 +1 more
Lower day-to-day anxiety Proven but unnoticeable

The background hum of worry that colors everything gets quieter.

3 meta-analyses n=1.3k 80–3000 mg 8 wk #10/48
33478482·35010916·40918536
Ease anxiety in older adults Proven but unnoticeable

Quiets the health worries and body tension that build with age.

3 meta-analyses n=1.3k 80–3000 mg 8 wk #10/45
33478482·35010916·40918536
Reduce pre-competition anxiety Proven but unnoticeable

Quiets the overthinking that hijacks execution right before you compete.

3 meta-analyses n=1.3k 80–3000 mg 8 wk #10/45
33478482·35010916·40918536
Break the insomnia cycle Probably doesn't help

Quiets the nervous-system overdrive that keeps you wired at bedtime.

1 RCT n=117 500 mg —
38106634

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

Piperine 44 shared outcomes · d=0.62
Boswellia 14 shared outcomes · d=1.38
Lycopene 5 shared outcomes · d=0.89
Sesame 3 shared outcomes · d=2.47
Anthocyanidins 1 shared outcome

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.

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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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