Cinnamon

Best for

Improve insulin sensitivity

Large effect, needs confirmation for 8–26 weeks · 3 meta-analyses , n=2.1k

38 papers · 3 claims · 62 outcomes scored · 3 positive

Outcomes

What cinnamon 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

Improve insulin sensitivity Large effect, needs confirmation

Your cells respond to insulin again so your pancreas works less hard.

9 meta-analyses n=2.1k 0.5–12000 mg 8–26 wk #2/78

27774415·28885566·31901246·36505061 +5 more

large

9 meta-analyses n=2.1k Meta-analyzed I²=80%

0.5–12000 mg

8–26 wk

#2 /78

Flatten post-meal blood sugar spikes Promising early signal

Blunts the glucose surge after eating so energy stays level.

8 meta-analyses n=739 3–12000 mg 0–16 wk

21899741·25249234·26258147·27774415 +4 more

moderate

8 meta-analyses n=739 Meta-analyzed I²=94%

3–12000 mg

0–16 wk

—

Steady your blood sugar levels Faint early signal

Keeps fasting glucose and your three-month average in a healthier range.

18 meta-analyses n=5.8k 0.5–12000 mg 8–17 wk

18500972·22973482·24019277·24716174 +14 more

small

18 meta-analyses n=5.8k Meta-analyzed I²=94%

0.5–12000 mg

8–17 wk

—

Outcome	Effect	Evidence	Dose	Weeks	Rank
Improve insulin sensitivity Large effect, needs confirmation	large	9 meta-analyses n=2.1k Meta-analyzed	0.5–12000 mg	8–26 wk	#2/78
Flatten post-meal blood sugar spikes Promising early signal	moderate	8 meta-analyses n=739 Meta-analyzed	3–12000 mg	0–16 wk	—
Steady your blood sugar levels Faint early signal	small	18 meta-analyses n=5.8k Meta-analyzed	0.5–12000 mg	8–17 wk	—

Buy well

Recommended Cinnamon products

Real products that dose Cinnamon where the research does, in a clean formulation, from brands we've audited. We only list ones we'd stand behind.

Chosen for adequate Cinnamon dosing vs. the studied range, a clean formulation (grade A–C), and independent brand-quality audits. Not sponsored.

Risk profile

Adverse events and known drug interactions

Safety events

hepatitis severe

dyspepsia moderate

gastrointestinal_disorders

headache

paresthesia

palpitations

contact_dermatitis

hepatotoxicity

Drug interactions

Rosuvastatin major increases toxicity

Lipid Modifying Agents major increases toxicity

Antithrombotic Agents major increases concentration

Enrofloxacin moderate increases effect

Nicotine moderate decreases concentration

Antipsychotics moderate increases concentration

other moderate decreases concentration

Antithrombotic Agents minor unknown

Acetaminophen minor unknown

Sources

Generated August 14, 2026

Cinnamon

What cinnamon actually does, by outcome

Recommended Cinnamon products

Adverse events and known drug interactions

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