Gripe water is an herbal supplement given to fussy babies, and it works through a simple combination of ingredients meant to calm the digestive tract: fennel and ginger to relax intestinal muscles, and sodium bicarbonate (baking soda) to neutralize stomach acid. That’s the theory, at least. In practice, there’s very little clinical evidence that these ingredients actually work in infants, and the product sits in a murky regulatory space that’s worth understanding before you reach for a bottle.
The Three Main Ingredients
Modern gripe water formulas typically contain three active components, plus flavorings. Each one targets a different piece of what might be causing your baby’s discomfort.
Fennel has what’s called a “carminative” effect, which in plain terms means it helps relax the smooth muscles of the intestines. When those muscles are clenched or spasming, gas gets trapped and causes pain. Fennel is thought to ease those spasms so gas can pass through more easily. This effect is well-documented in adults and older children.
Ginger works along similar lines. It’s long been used to settle upset stomachs and reduce nausea, and it may help move food through the digestive tract more smoothly. Again, the evidence for this comes primarily from studies in adults.
Sodium bicarbonate is just baking soda. It’s a base, so when it hits stomach acid, the two neutralize each other. The idea is that if a baby has excess acid causing discomfort or reflux-like symptoms, the baking soda tamps it down. This is the same chemistry behind common antacid tablets.
Why It Might Not Work in Babies
Here’s the catch: babies’ digestive systems aren’t just smaller versions of adult ones. They’re fundamentally different in how they process food, manage acid levels, and respond to herbal compounds. As pediatricians at the Cleveland Clinic have pointed out, ginger and fennel can relieve stomach discomfort in adults and kids, but those ingredients haven’t been proven to work in babies.
Infant colic, the primary reason parents turn to gripe water, remains poorly understood. It may not even be a digestive problem in many cases. Some researchers believe colic relates to an immature nervous system, overstimulation, or developmental changes that have nothing to do with gas or acid. If the root cause isn’t digestive, a digestive remedy won’t help, no matter how well its ingredients work in theory.
There are no large, rigorous clinical trials showing that gripe water reduces crying time or colic symptoms compared to a placebo. The fennel component has the strongest theoretical basis, with some research supporting a mild effect on colic and flatulence, but that evidence is limited.
Risks Worth Knowing About
Gripe water is sold as a dietary supplement, not a medication, which means it doesn’t go through the same safety testing that drugs require before reaching store shelves. This distinction matters more than most parents realize.
Giving any liquid other than breast milk or formula to a baby under six months can introduce bacteria, trigger allergic reactions, and irritate the intestinal lining. Doctors generally recommend that babies consume only breast milk or formula for at least the first four months of life.
Sodium bicarbonate, when given frequently or in large amounts, can disrupt the acid-base balance in a baby’s body, potentially leading to a condition called alkalosis, where the blood becomes too alkaline. This is rare with occasional use but becomes a real concern with repeated dosing.
Contamination is another issue. In 2007, the FDA investigated a case where a six-week-old infant in Minnesota became ill after consuming a flavored gripe water product that was found to contain the parasite cryptosporidium. A separate case report documented a nine-month-old girl who developed a severe bloodstream infection linked to gripe water contaminated with bacteria. In April 2025, the FDA issued a warning letter to Mommy’s Bliss, one of the most widely sold gripe water brands, citing serious manufacturing violations at their facility. The FDA’s inspection found that the company had received reports of infants choking, infants who stopped breathing, and infants hospitalized after being given their gripe water product, and had failed to report these events as required by law.
How Parents Typically Give It
If you decide to use gripe water, the typical approach is to give it right after a feeding, since colic pain often worsens during or just after meals. Most brands recommend using a clean medicine dropper or small spoon. Dosing varies by brand and by the baby’s age, with smaller amounts for younger infants, so there’s no universal guideline. Every product has its own instructions on the label.
Some brands suggest babies as young as two weeks can receive gripe water, while pediatricians more commonly advise waiting until at least four months. This gap between what’s marketed and what’s medically recommended is a recurring tension with these products.
The Regulatory Gap
Gripe water occupies an unusual position. It’s marketed with claims about relieving gas, colic, and fussiness, which sound medical. But because it’s classified as a dietary supplement, manufacturers don’t need to prove it works before selling it. The FDA has taken the position that when gripe water brands make disease-related claims (like treating colic), the product legally becomes an unapproved drug, which is a violation.
This means there’s no standardized formula. Ingredients, concentrations, and quality controls vary from brand to brand. What’s in one bottle of gripe water may be quite different from what’s in another, and neither has been tested the way an over-the-counter infant medication would be.
What Else Helps With Colic
Colic typically peaks around six weeks of age and resolves on its own by three to four months. That timeline is important because it means many remedies, gripe water included, get credit for improvements that were going to happen anyway.
Techniques with stronger evidence behind them include holding your baby upright after feedings, gentle stomach massage, swaddling, rhythmic motion like rocking or car rides, and white noise. For breastfed babies, some parents find that eliminating dairy or other common allergens from their own diet reduces fussiness. For formula-fed babies, switching to a partially hydrolyzed formula sometimes helps. Simethicone drops, which break up gas bubbles physically rather than chemically, are another option that pediatricians view as generally safer since the active ingredient isn’t absorbed into the bloodstream.