Conclusion: pylori infection. Common cinnamon showed weak to very weak evidence of efficacy in treating oral candidiasis in HIV patients and chronic salmonellosis.
PubMed 18066129 ↗Cassia Cinnamon
Based on 4 first-hand reports and 1 meta-analyses & systematic reviews in the medical literature. Ranked #3064 of 4,149 overall.
Of reports that state an outcome, 0% are positive.
What Cassia Cinnamon does, according to users
Of the people who reported each effect, the share who said it got better.
What the research says
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.
Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
Reported side effects
How often each side effect came up across all reports.
What users say
First-hand experiences, quoted verbatim. We show one positive and one negative where both exist.
“Cassia cinnamon (the kind you get normally in the US) contains a much higher quantity of coumarin, which is toxic”
More supplements
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 3, 2026. How we rate