Ginger against nausea: what clinical studies say

The anti-nausea effect of ginger is one of the most documented in herbal medicine. The WHO recognizes ginger as a natural antiemetic. Here is the evidence for each type of nausea.

The mechanism: 5-HT3 antagonism

6-gingerol acts as an antagonist of 5-HT3 (serotonin) receptors in the gastrointestinal tract—the same mechanism as ondansetron (Zofran), the gold standard anti-nausea drug.

1. Pregnancy nausea

Viljoen et al. (Nutrition Journal, 2014) analyzed 12 clinical trials (1,278 pregnant women):

• Ginger significantly reduces nausea in the 1st trimester
• Effective dose: 1g/day for at least 4 days
• No adverse effects on the fetus reported at recommended doses
• Superior to placebo, comparable to vitamin B6

Caution: do not exceed 1g/day in the 1st trimester. Consult your gynecologist.

2. Chemotherapy nausea (CINV)

Marx et al. (Critical Reviews in Food Science, 2017) show that ginger reduces acute nausea induced by chemotherapy in addition to standard antiemetics.

• Dose: 0.5-1g of ginger before the session
• Reduces acute nausea (0-24 hours post-chemo)
• Modest effect on delayed nausea (24-120h)
• Compatible with ondansetron and dexamethasone

3. Motion sickness

Link et al. (American Journal of Physiology, 2003) show that 1-2g of ginger before travel reduces nausea and gastric dysrhythmia linked to travel sickness.

Comparison table

Type of nausea	Ginger dose	Timing	Level of evidence
Pregnancy (1st trimester)	0.5-1g/day	Divided into 2-4 takes	⭐⭐⭐⭐⭐ (12 RCTs)
Chemotherapy (CINV)	0.5-1g	Before the session	⭐⭐⭐⭐ (multiple RCTs)
Motion sickness	1-2g	30 min before the trip	⭐⭐⭐ (some RCTs)
Post-operative	1g	Before anesthesia	⭐⭐⭐ (some RCTs)

In practice

15-20ml ofINTI Essence correspond to approximately 2-3g of equivalent fresh ginger. Convenient takeaway format. No alcohol, no preservatives — pregnancy compatible (respect doses). 1.1g of natural sugar/100ml.