PlainPill

Cinnamon vs Metformin for blood sugar

Short answer: For blood sugar, users rate them about the same: 100% report improvement with Cinnamon (12 reports) and 96% with Metformin (27 reports).

Cinnamon has 75 meta-analyses and 95 randomized trials on PubMed; Metformin has 1,367 and 3,450.

Based on 54 reports about Cinnamon and 175 about Metformin. Not medical advice.

Cinnamon
Supplement
Metformin
Medication
Users say it helped68%helped10 reports · few reports29%helped67 reports · medium confidence
Verdict
Mostly positive
Mixed
ResearchAResearch: StrongAResearch: Strong
Meta-analyses / RCTs75 / 951,367 / 3,450
Mainly used for
Blood sugar
% reporting improvement
100% (12)96% (27)
Performance
% reporting improvement
—0% (15)
Longevity
% reporting improvement
—100% (11)
Weight loss
% reporting improvement
—90% (10)
Energy
% reporting improvement
—40% (10)
Common side effectscoumarin toxicitystomach issues, diarrhea, b12 depletion, nausea
Typical dose reported1 teaspoonNot listed
Cinnamon
Latest review conclusion

The consumption of cinnamon is associated with a statistically significant decrease in levels of fasting plasma glucose, total cholesterol, LDL-C, and triglyceride levels, and an increase in HDL-C levels; however, no significant effect on hemoglobin A1c was found. The high degree of heterogeneity may limit the ability to apply these results to patient care, because the preferred dose and duration of therapy are unclear.

Ann Fam Med, 2013 ↗
What a user said
“And I'll add: cinnamon, C3G, ALA, possibly also banana leaf, Benfotiamine and Fucoxanthin”
Full Cinnamon profile →
Metformin
Latest review conclusion

The choice of metformin or COCP treatment should be based on symptoms, noting some biochemical benefits from combination treatment targeting both major endocrine disturbances seen in PCOS (hyperinsulinemia and hyperandrogenism).

J Clin Endocrinol Metab, 2024 ↗
What a user said
“Metformin currently has enough data for me personally to feel comfortable not only taking it myself (and my wife), but also recommending it to my patients.”
Full Metformin profile →

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Percentages come from first-hand user reports and are not clinical outcomes. Talk to a doctor before starting, stopping or combining anything. How we rate