Emetrol is an over-the-counter anti-nausea liquid made from three active ingredients: fructose, dextrose (glucose), and phosphoric acid. It’s a surprisingly simple formula. Unlike most anti-nausea medications, it contains no antihistamines, no bismuth, and nothing that causes drowsiness. The combination of concentrated sugars and a mild acid works directly in the stomach to calm nausea.
Active Ingredients
The three active ingredients in Emetrol each play a role in settling the stomach:
- Fructose and dextrose (glucose): These are concentrated simple sugars. Together, they form a hyperosmolar solution, meaning the liquid is denser than your body’s own fluids. This high sugar concentration helps reduce stomach muscle contractions, which are the spasms that trigger the urge to vomit.
- Phosphoric acid: A mild acid that helps relax the smooth muscle of the stomach wall. It also contributes to the solution’s ability to coat and calm the stomach lining. You encounter phosphoric acid regularly in soft drinks like cola, though Emetrol contains it at a higher concentration specifically for its anti-nausea effect.
The combination works locally in the digestive tract rather than in the brain, which is why Emetrol doesn’t cause the drowsiness associated with antihistamine-based nausea remedies.
Inactive Ingredients
Beyond the three active components, Emetrol’s full inactive ingredient list includes FD&C Red No. 40 (a synthetic food dye that gives the liquid its color), flavoring, glycerin, methylparaben (a preservative), and purified water. If you have a known sensitivity to Red 40 or parabens, this is worth noting before purchasing.
What Emetrol Is Used For
Emetrol is labeled for relief of nausea associated with upset or sour stomach, including nausea from overindulgence in food and drink. It’s commonly used for stomach bugs, motion sickness, and general queasiness. In some markets, it is also indicated for morning sickness in early pregnancy, with a recommended dose of 15 to 30 mL taken upon waking and repeated every three hours as needed. That said, pregnant individuals should check with a healthcare provider before using it.
How Emetrol Differs From Other Nausea Remedies
Most OTC nausea treatments work through the nervous system. Dramamine and Bonine block histamine receptors in the brain, which is effective but causes drowsiness. Pepto-Bismol coats the stomach lining and has antimicrobial properties but contains bismuth subsalicylate, which isn’t suitable for everyone.
Emetrol takes a different approach entirely. Because it’s essentially a concentrated sugar solution with acid, it has no central nervous system effects. You won’t feel drowsy or foggy after taking it. The tradeoff is that its effect is milder. It works best for occasional, low-grade nausea rather than severe or persistent vomiting.
Who Should Avoid Emetrol
The high sugar content is the main concern. Each dose delivers a concentrated hit of fructose and glucose, which can spike blood sugar levels. People with diabetes need to account for this when deciding whether to use it. Anyone with hereditary fructose intolerance should avoid Emetrol entirely, since the fructose content could cause serious metabolic problems.
The label also advises against taking more than five doses in one hour without medical guidance. If nausea persists beyond that point, the product isn’t the right tool for what’s going on, and something more targeted is likely needed.
Dosing by Age
Adults and children 12 and older take one to two tablespoons (15 to 30 mL) per dose. Children ages 2 to under 12 take one to two teaspoons (5 to 10 mL). Doses can be repeated at short intervals, but the five-dose-per-hour limit applies. Emetrol is not intended for children under 2 without medical direction.
For best results, the manufacturer recommends not drinking other fluids immediately before or after a dose. Letting the solution sit in the stomach undiluted gives it the best chance of calming the nausea.
Chewable Tablets
Emetrol is also available in a chewable tablet form marketed as “Emetrol Chewables Rapid Nausea Relief.” These tablets are designed for the same purpose, relief of nausea from upset stomach and overindulgence, but use a different formulation suited to a solid dose form. If you prefer not to take a liquid or want something more portable, the chewables are an alternative worth considering.