People mainly take Ceylon Cinnamon for blood sugar. Based on 7 first-hand reports and 1 meta-analyses & systematic reviews in the medical literature. Ranked #1054 of 1,974 overall.
Of reports that state an outcome, 100% are positive.
Of the people who reported each effect, the share who said it got better.
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
At least one meta-analysis, or 5+ randomized controlled trials. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: The available in-vitro and in-vivo evidence suggests that CZ has many beneficial health effects. However, since data on humans are sparse, randomized controlled trials in humans will be necessary to determine whether these effects have public health implications.
PubMed 24148965 ↗As stated by users — not a recommendation. Follow the label or your doctor.
How often each side effect came up across all reports.
Verbatim quotes, shortened only — each links to the original discussion.
“Ceylon cinnamon has been studied 1-4g per day can help blood glucose remain stable. I take 2-3g per day.”
“Cinnamon contains coumarin which can damage the liver in high doses, but cinnamon does has great benefits for blood sugar regulation.”
“I've read about omega-3 (which he already takes), vitamin D, Ceylon cinnamon, THC edibles (which he takes occasionally)”
“If you're taking cinnamon as a supplement...stick to Ceylon...a 100kg person can consume roughly 50g of it according to current data”
“150mg caffeine, 3g ceylon cinnamon, 3g taurine”
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate