Quick answer: In a 12-week trial, adults taking 15 to 30 ml of vinegar a day lost about 1 to 2 kg more than placebo. The effect is modest, and AlkaMelt's drops cannot contain vinegar at that dose.
The main trial
A Japanese study of obese adults found that 15 or 30 ml of vinegar a day for 12 weeks led to modest reductions in weight and waist size compared with placebo. Other studies suggest small effects on fullness and after-meal blood sugar. PubMed: ACV trials.
Realistic size
A kilogram or two over three months, alongside diet changes. Not transformative.
What it means for AlkaMelt
A 30 ml bottle for a month cannot deliver 15 ml of vinegar a day. The ACV in AlkaMelt is likely a concentrated extract at an unknown dose. See the missing doses.
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General information, not medical advice. AlkaMelt is a dietary supplement and is not intended to diagnose, treat, cure or prevent any disease.