Comparison
Curcumin vs Melatonin
Side-by-side of Curcumin and Melatonin. Every row below is pulled from the compound schema and will update as our data grows. For deeper reads, follow through to each compound page.
Curcumin
Curcumin supplement guide: turmeric extract at 500-1000 mg/day, piperine and Meriva for absorption, evidence in joint inflammation and mood.
Melatonin
Melatonin as a sleep supplement: 0.3-1 mg matches physiological output, 3-10 mg is pharmacological. Shifts circadian phase, shortens sleep latency.
Effects at a glance
Curcumin
- •Reduces osteoarthritis knee pain comparable to ibuprofen at 1500 mg/day enhanced formulation
- •Modest antidepressant effect (SMD ~0.34) as monotherapy or SSRI adjunct in major depression
- •Standard curcumin has ~3% bioavailability; Meriva, BCM-95, Theracurmin shift absorption 5-30 fold
- •Inhibits NF-kB and COX-2; reduces hs-CRP, IL-6, TNF-alpha in chronic inflammation
- •Antiplatelet effect at higher doses; meaningful interaction with warfarin and DOACs
- •Iron chelation can contribute to deficiency in already-marginal patients
Melatonin
- •Shortens sleep onset latency by ~7 to 12 minutes at physiological 0.3 to 1 mg doses
- •Advances circadian phase when taken 30 to 60 minutes before target bedtime, useful for jet lag and shift work
- •Does not meaningfully increase total sleep time in healthy adults without circadian misalignment
- •Endogenous nighttime production is not suppressed by short-term exogenous supplementation
- •Higher doses (3 to 10 mg) raise plasma levels above physiological range and often increase morning grogginess
- •Effective for delayed sleep-wake phase disorder and reducing jet-lag severity in eastward travel
Side-by-side
| Attribute | Curcumin | Melatonin |
|---|---|---|
| Category | natural | supplement |
| Also known as | turmeric extract, diferuloylmethane | N-acetyl-5-methoxytryptamine |
| Half-life (hr) ↗ | 7 | 0.75 |
| Typical dose (mg) ↗ | 500 | 0.5 |
| Dosing frequency | 1 to 2 times daily with meals | daily, 30 to 60 minutes before target sleep time |
| Routes | oral | oral, sublingual |
| Onset (hr) | 2 | 0.5 |
| Peak (hr) | 4 | 1 |
| Molecular weight | 368.38 | 232.28 |
| Molecular formula | C21H20O6 | C13H16N2O2 |
| Mechanism | Inhibits NF-kB transcription factor, COX-2, and lipoxygenase; activates AMPK and Nrf2; modulates JAK-STAT and PI3K-Akt kinase signaling. Pleiotropic anti-inflammatory and antioxidant effects. | Agonist at MT1 and MT2 receptors in the suprachiasmatic nucleus, signaling biological night and promoting sleep-onset gating plus circadian phase shifts. |
| Legal status | Dietary supplement (global) | OTC in US; prescription in UK, EU, Japan |
| WADA status | allowed | allowed |
| DEA / Rx | Not scheduled | OTC supplement in US; Rx in UK, EU, Japan, Australia |
| Pregnancy | Culinary turmeric is safe; supplemental curcumin best avoided in pregnancy | Insufficient data; not routinely recommended |
| CAS | 458-37-7 | 73-31-4 |
| PubChem CID | 969516 | 896 |
| Wikidata | Q312266 | Q179243 |
Safety profile
Curcumin
Common side effects
- nausea
- diarrhea
- dyspepsia
- yellow stool (benign)
Contraindications
- active gallstones (curcumin stimulates gallbladder contraction)
- severe biliary obstruction
- scheduled elective surgery (discontinue 1-2 weeks prior)
Interactions
- warfarin and DOACs: additive antiplatelet and anticoagulant effects; meaningful bleeding risk at 1000+ mg/day(major)
- aspirin and NSAIDs: additive antiplatelet effect(moderate)
- tacrolimus and cyclosporine: CYP3A4 and P-gp modulation may alter drug levels(moderate)
- iron supplements: curcumin chelates iron; can contribute to deficiency in marginal patients(moderate)
- chemotherapy agents: potential interference with multiple agents; coordinate with oncology team(major)
Melatonin
Common side effects
- vivid dreams
- morning grogginess (higher doses)
- headache
- dizziness
Contraindications
- autoimmune disease (theoretical)
- concurrent anticoagulant therapy without monitoring
Interactions
- fluvoxamine: CYP1A2 inhibition raises melatonin levels substantially(major)
- warfarin: possible increased bleeding risk(moderate)
- benzodiazepines and alcohol: additive sedation(moderate)
- antihypertensives: may alter blood pressure response(minor)
Which Should You Take?
Curcumin comes out ahead for most readers on the criteria we weight: 3 catalogued goals, OTC dietary supplement, oral dosing, with a Tier-B outcome catalogued. Melatonin is the right call when one of the conditionals below applies.
- → If your priority is post-training recovery, pick Curcumin.
- → If your priority is healthspan extension, pick Curcumin.
- → If your priority is sleep onset or sleep quality, pick Melatonin.
- → If your priority is circadian regulation, pick Melatonin.
Edge case: Half-lives differ materially (Curcumin ~7 hr vs Melatonin ~0.75 hr). Curcumin reaches steady state faster; Melatonin is easier to dial in if tolerability is uncertain.
Default choice: Curcumin. Lower friction to source, and broader goal coverage. Reach for Melatonin only if your priority sits squarely in the goals it owns above.
This verdict is generated from each compound's schema (goals, legal status, evidence outcomes, dosing route). It updates automatically as our compound data evolves; the deeper read sits on each individual compound page.
Common questions
What is the difference between Curcumin and Melatonin?
Curcumin and Melatonin differ in category (natural vs supplement), mechanism, and typical dosing. See the side-by-side table for full details.
Which has a longer half-life, Curcumin or Melatonin?
Curcumin half-life is 7 hours; Melatonin half-life is 0.75 hours.
Can you stack Curcumin with Melatonin?
Stack compatibility depends on mechanism overlap, legal status, and individual response. Check each compound page for specific interactions and contraindications before combining.
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