Dr. Grey AI

Bitter Melon

Bitter melon (Momordica charantia) is a tropical vegetable used traditionally for diabetes in Asia, Africa, and South America. Contains charantin, vicine, and polypeptide-p with proposed insulin-like activity. C-GRADE evidence: Meta-analyses (13 RCTs, 892 participants) show INCONCLUSIVE evidence for glycemic control - pooled analysis shows no significant effect vs placebo (MD -0.03 for FBG, -0.12 for HbA1c). B-GRADE for safety and tolerability. SAFETY WARNING: Risk of hypoglycemia when combined with diabetes medications; hypoglycemic coma and convulsions reported in CHILDREN - not recommended for pediatric use.

Quick Answer

What it is

Bitter melon (Momordica charantia) is a tropical vegetable used traditionally for diabetes in Asia, Africa, and South America. Contains charantin, vicine, and polypeptide-p with proposed insulin-like activity.

Key findings

  • Grade B: Safety and Tolerability
  • Grade B: Hypoglycemia Risk
  • Grade C: Fasting Blood Glucose

Safety

  • SAFETY WARNING: Risk of hypoglycemia when combined with diabetes medications; hypoglycemic coma and convulsions reported in CHILDREN - not recommended for pediatric use.
  • RCTs show good tolerability - adverse events similar to placebo.
  • Risk increases when combined with diabetes medications.
ℹ️ Quick Facts: Bitter Melon

Quick Facts: Bitter Melon

  • Best Evidence:Grade D
  • Conditions Studied:1
  • Research Outcomes:6
  • Grade B Findings:2
  • Key Effect:Metabolic Syndrome
Outcomes by grade:
A0
B2
C3
D1
1 conditions · 6 outcomes

Detailed Outcomes

B
Safety and Tolerability
RCTs show good tolerability - adverse events similar to placebo. Common AEs: GI symptoms (nausea, diarrhea, abdominal discomfort), headache. No significant liver enzyme changes in 12-week trials. ALT/AST stable or slightly declined.
moderate↑Improves
B
Hypoglycemia Risk
SAFETY CONCERN: Hypoglycemic coma and convulsions reported in children. Risk increases when combined with diabetes medications. Case reports of serious hypoglycemia. Caution required with concurrent antidiabetic therapy.
moderate↑Worsens
C
Fasting Blood Glucose
Meta-analysis of RCTs: No significant effect on fasting blood glucose vs placebo (MD -0.03, 95% CI -0.38 to 0.31). High heterogeneity among studies. Individual trials show mixed results with some showing reductions and others showing no effect.
none
C
HbA1c Reduction
Meta-analysis: No significant effect on HbA1c (MD -0.12, 95% CI -0.35 to 0.11, I²=56%). Short study durations and small sample sizes may explain inconsistent results. Some individual studies report modest HbA1c reductions.
none
C
Postprandial Glucose
Korean prediabetes RCT (12 weeks): Improved postprandial glucose levels, possibly via glucagon suppression. More consistent effect than fasting glucose. Long-term cohort studies needed to confirm prophylactic benefits.
small↑Improves
D
Traditional Use for Metabolic Syndrome
Systematic review: Insufficient high-quality evidence to support efficacy for metabolic syndrome parameters. Traditional use widespread but clinical validation lacking. More rigorous trials needed.
small

Evidence by Condition

Best grade per condition (each condition may have multiple outcomes)

DMetabolic Syndrome
1
Traditional Use for Metabolic Syndrome

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