Peppermint

Best for

Reduce bloating and trapped gas

Promising early signal · 180 mg/day for 4 weeks · 1 study , n=72

20 papers · 3 claims · 40 outcomes scored · 3 positive

Outcomes

What peppermint actually does, by outcome

Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.

Outcome Effect size Evidence Dose Weeks Rank

Reduce bloating and trapped gas Promising early signal

Less belly swelling, pressure, and gassiness after meals.

1 RCT n=72 180 mg 4 wk #6/12

26319955

moderate

1 RCT n=72

180 mg

4 wk

#6 /12

Ease stomach and belly pain Likely modest benefit

Fewer pain episodes and less intensity when they hit.

4 meta-analyses n=628 0.6–180 mg 3–13 wk #2/17

26319955·30654773·389344·40421412

small

4 meta-analyses n=628 Meta-analyzed

0.6–180 mg

3–13 wk

#2 /17

Ease irritable bowel symptoms Proven modest benefit

Less pain, bloating, and unpredictable bowel habits from IBS.

3 meta-analyses n=579 0.6–180 mL 3–4 wk #1/11

26319955·30654773·389344

small

3 meta-analyses n=579 Meta-analyzed

0.6–180 mL

3–4 wk

#1 /11

Outcome	Effect	Evidence	Dose	Weeks	Rank
Reduce bloating and trapped gas Promising early signal	moderate	1 RCT n=72	180 mg	4 wk	#6/12
Ease stomach and belly pain Likely modest benefit	small	4 meta-analyses n=628 Meta-analyzed	0.6–180 mg	3–13 wk	#2/17
Ease irritable bowel symptoms Proven modest benefit	small	3 meta-analyses n=579 Meta-analyzed	0.6–180 mL	3–4 wk	#1/11

Risk profile

Adverse events and known drug interactions

Safety events

gastroesophageal reflux moderate

Uterine bleeding / induction of menstruation (excessive use) moderate

heartburn mild

dyspepsia mild

flatulence mild

upper respiratory tract infection mild

headache mild

dizziness mild

Drug interactions

Antithrombotic Agents moderate increases toxicity

Hyoscine Butylbromide moderate increases effect

Sources

Generated August 14, 2026

Peppermint

What peppermint actually does, by outcome

Adverse events and known drug interactions

More evidence for Peppermint

Asian Psyllium

Bacillus Coagulans

Blonde Psyllium

Brown Seaweed and Kelp

Diamine Oxidase

Inulin

Peppermint

More evidence for Peppermint

NewAsian Psyllium

NewBacillus Coagulans

NewBlonde Psyllium

NewBrown Seaweed and Kelp

NewDiamine Oxidase

NewInulin

Asian Psyllium

Bacillus Coagulans

Blonde Psyllium

Brown Seaweed and Kelp

Diamine Oxidase

Inulin