Could lemon balm help people with benign heart palpitations?

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Lemon balm may help reduce benign heart palpitations; a 2015 study found that participants who were taking 1,000 mg of lemon balm extract reported fewer palpitations than those who took a placebo. However, this was a single study, and more research is needed to confirm these findings.

Maybe, although there is not much research in this area. One 2015 randomized clinical trial in 71 people in Iran with benign heart palpitations who took either a placebo or 1,000 mg of freeze-dried lemon balm extract for 14 days found that, in the 55 participants who completed the study, the participants who took lemon balm reported less-frequent palpitations than the participants who took the placebo. The number of participants in the lemon balm group with anxiety and insomnia also decreased more than in the placebo group.[1] However, this was a single study; more research is needed.

References
1.^Alijaniha F, Naseri M, Afsharypuor S, Fallahi F, Noorbala A, Mosaddegh M, Faghihzadeh S, Sadrai SHeart palpitation relief with Melissa officinalis leaf extract: double blind, randomized, placebo controlled trial of efficacy and safety.J Ethnopharmacol.(2015 Apr 22)