Colic is one of the most exhausting challenges of early parenthood, but there are real, evidence-backed strategies that can reduce your baby’s crying. Most cases peak around 6 weeks of age and ease significantly by 3 to 4 months. In the meantime, a combination of physical soothing techniques, feeding adjustments, and targeted supplements can make a meaningful difference for both your baby and your sanity.
What Colic Actually Is
Colic isn’t a disease. It’s a pattern of intense, prolonged crying in an otherwise healthy baby. The classic definition, sometimes called the “rule of three,” describes crying for more than three hours a day, more than three days a week, for longer than three weeks. In practice, most parents aren’t counting that precisely. If your baby cries inconsolably for long stretches, especially in the late afternoon and evening, and nothing obvious is wrong, you’re likely dealing with colic.
For a long time, colic was considered purely behavioral, with no physical cause. That view has shifted. Research published in The Journal of Pediatrics found that colicky infants have twice the level of a gut inflammation marker compared to non-colicky babies. Their intestinal bacteria are also less diverse, with higher rates of certain irritating bacterial species. This doesn’t mean your baby has a gut disease, but it helps explain why their discomfort is real and why some gut-focused interventions actually work.
The 5 S’s: Physical Soothing That Works
The most widely recommended soothing system for colicky newborns involves five techniques, all designed to recreate the sensory environment of the womb. They work best when used together with enough intensity to engage what’s called a calming reflex, an automatic relaxation response that’s active during the first three to four months of life.
- Swaddling. Wrap your baby snugly in a blanket with arms down. This reduces the startle reflex that can keep a fussy baby cycling back into distress.
- Side or stomach position. Hold your baby on their side or stomach against your body. This is for holding only, not for sleep. Always place babies on their backs to sleep.
- Shushing. Make a loud, steady “shhhh” sound near your baby’s ear. It needs to be at least as loud as the crying to get their attention. White noise machines work too.
- Swinging. Small, rhythmic, jiggling movements (supporting the head and neck) mimic the motion babies felt in utero. Think gentle vibration, not large swinging motions.
- Sucking. Offer a pacifier or let the baby nurse for comfort. Non-nutritive sucking is one of the strongest calming triggers in young infants.
The key is vigor and precision. A halfhearted swaddle or quiet shush won’t activate the reflex. When all five are done correctly, most crying babies settle within minutes.
Probiotics: The Strongest Supplement Evidence
One specific probiotic strain has the most clinical support for colic relief. In a controlled trial, colicky infants given five drops of this probiotic daily (before a feeding) went from crying an average of 342 minutes per day to just 78 minutes per day after 28 days. That’s a drop of over four hours of daily crying. Twice as many babies in the probiotic group had their crying cut in half compared to the placebo group.
The probiotic works by shifting gut bacteria toward a healthier balance, which may reduce the low-grade intestinal inflammation seen in colicky babies. Look for infant-specific probiotic drops at your pharmacy. Results typically take two to four weeks to appear, so give it time before deciding whether it’s helping.
Feeding Changes for Breastfed Babies
If you’re breastfeeding, certain proteins in your diet can pass through breast milk and irritate your baby’s gut. The most common culprits are cow’s milk products, soy, and eggs. You have two approaches: eliminate all three at once for two to four weeks and see if your baby improves, or remove one category at a time, giving each two to four weeks before judging the effect.
The all-at-once method gives you a faster answer. If your baby improves, you can reintroduce foods one at a time to identify the specific trigger. If there’s no change after a full four weeks, diet likely isn’t the issue and you can resume eating normally. Many parents notice a difference within the first two weeks when dairy is the culprit.
Formula Changes for Bottle-Fed Babies
For formula-fed infants, switching to an extensively hydrolyzed formula (where milk proteins are broken into very small fragments) has strong evidence behind it. A meta-analysis of multiple trials found that babies on hydrolyzed formula were nearly five times more likely to improve than those kept on standard formula. In individual studies, crying time dropped by one to nearly three hours per day more than it did with regular formula.
In one trial, 87% of babies on hydrolyzed formula reduced their crying to under an hour a day. These results appeared within two to four weeks. Hydrolyzed formulas taste different and cost more than standard options, but a short trial of two to four weeks is enough to tell whether it’s making a difference for your baby. If crying doesn’t improve, you can switch back.
What Doesn’t Work
Simethicone drops (the active ingredient in many gas relief products marketed for babies) have not performed better than placebo in clinical trials. A systematic review in BMJ Open examined the evidence across multiple studies and found the data either inconclusive or unfavorable. Some reviews even noted a worsening of symptoms. Despite being widely sold, simethicone is unlikely to help with colic specifically.
Gripe water, another popular over-the-counter remedy, is not recommended by national clinical guidelines in the United States, United Kingdom, or Ireland. There is no reliable evidence that it reduces colic symptoms, and formulations vary widely in ingredients and quality.
Understanding the Crying Pattern
Colic follows a surprisingly predictable arc that pediatric researchers describe with the acronym PURPLE. The P stands for a peak of crying, which hits hardest around month two. The crying is unexpected (it starts and stops without a clear reason), can be long-lasting (up to five hours a day or more), and clusters in the evening. Your baby may resist all soothing during these episodes, and their face may look like they’re in pain.
Knowing this pattern helps because it means the worst stretch is finite. If your baby is six weeks old and the crying seems to be getting worse, that’s actually the expected trajectory. By three to four months, the vast majority of colicky babies have turned a corner.
When Crying Signals Something Else
Colic is a diagnosis of exclusion, meaning it applies only after other causes have been ruled out. Certain signs suggest the crying has a medical cause that needs attention: sudden onset of persistent, inconsolable crying that’s different from your baby’s usual pattern; poor weight gain or difficulty feeding; fever; projectile vomiting; a rapidly growing head circumference; or any unexplained bruising or injury. A baby who is gaining weight normally, feeding well, and is healthy between crying episodes almost certainly has colic rather than something more serious.
Protecting Yourself as a Parent
Hours of inconsolable crying can push even the most patient parent to a breaking point, and that’s a normal human response, not a failure. The single most important safety step is this: if you feel overwhelmed or frustrated, put your baby down in a safe place (like a crib with nothing in it), walk away, and take a few minutes to breathe. Your baby will be safe crying alone for a few minutes. You are not abandoning them by stepping away.
Call a partner, family member, or friend to take over when you can. Colic is a tag-team situation, not something one person should handle alone night after night. If you’re experiencing mental health challenges during this period, the National Maternal Mental Health Hotline (833-852-6262) offers free, confidential support around the clock. No matter how intense the frustration becomes, never shake a baby. Shaking can cause permanent brain damage or death, and it happens most often when a caregiver is pushed past their limit by prolonged crying.