Colic Baby Remedies: Evidence-Based Soothing Techniques

What is colic? The rule of 3

Colic is not a disease — it is a clinical description of otherwise healthy babies who cry excessively in the early weeks of life. The standard definition, established by pediatrician Morris Wessel in the 1950s and still used today, is known as the rule of 3:

• Crying for more than 3 hours per day
• On more than 3 days per week
• For more than 3 weeks
• In an otherwise healthy baby under 3 months of age

By this definition, colic affects roughly 10–30% of babies worldwide. It is equally common in breastfed and formula-fed infants, in firstborns and later siblings, and across all socioeconomic groups. There is no single proven cause. Current research points to two leading hypotheses: immaturity of the gut microbiome (the community of bacteria colonizing the newborn intestine), and heightened sensitivity of the developing nervous system to sensory input. Neither explains every case, which is why no single treatment works for all babies.

Before assuming colic, your pediatrician will rule out other causes of crying such as reflux, food protein intolerance, or infection. If your baby has a fever, is not feeding, or the crying pattern changes suddenly, seek medical advice promptly.

When colic peaks and ends

Understanding the typical trajectory of colic is one of the most helpful things a parent can know, because colic is time-limited.

• Onset: Most commonly around 2–3 weeks of age.
• Peak: Crying is usually worst at around 6 weeks. This is the hardest point, and it is temporary.
• Resolution: The vast majority of colicky babies are significantly better by 3–4 months. For most, it disappears completely.

There is also a predictable daily pattern: colic crying tends to cluster in the late afternoon and evening hours, often starting around 5–6 pm and easing by midnight. This pattern — sometimes called the "witching hour" — is so consistent that it can help distinguish colic from other causes of crying.

Knowing that colic ends by around 12–16 weeks does not make the sleepless nights easier in the moment, but it gives parents a horizon to aim for. Many parents find that having a concrete end date in mind — and tracking how many weeks have passed — genuinely helps them cope.

Dr. Harvey Karp's 5 S's

Pediatrician Dr. Harvey Karp, author of The Happiest Baby on the Block, developed a framework of five techniques that together activate what he calls the "calming reflex" — a neurological off-switch for crying that exists in young infants. Each S works individually, but they are most powerful when used together and simultaneously.

1. Swaddle: Wrap your baby snugly in a light blanket, with arms held close to the body. Crucially, the hips must remain loose — tight hip wrapping increases the risk of hip dysplasia. A good swaddle mimics the contained feeling of the womb. Use a purpose-made swaddle blanket or a stretchy wrap if you are unsure how to swaddle safely.
2. Side or Stomach hold: Hold your baby on their side or on their stomach across your forearm or lap. This position activates the calming reflex more strongly than lying on the back. Important: this hold is for soothing while you are awake and supervising — never place your baby on their side or stomach to sleep unsupervised.
3. Shush: Produce a continuous "shhhh" sound close to your baby's ear, at a volume slightly louder than the crying. This sounds counterintuitive, but the womb is genuinely loud — the sound of blood rushing through the placenta is around 80–90 dB. A soft voice does not cut through the crying; the shush needs to be loud and sustained. Shusher devices or white noise apps can sustain this when your voice gives out.
4. Swing: Gentle, jiggy motion — not slow rocking. Support the head and neck at all times and move in small, rapid oscillations. Think of the constant gentle motion a baby experienced in the womb during daily activity. Swing chairs or baby carriers work well for sustained motion when your arms are tired.
5. Suck: Offer a pacifier, your clean finger, or the breast. Non-nutritive sucking activates the calming reflex and releases calming hormones. If your baby refuses the pacifier, try dipping it in a small amount of breast milk first.

The key insight from Dr. Karp's approach is that layering all five techniques at once produces a much stronger calming effect than any single technique. Start with swaddling, move to the side hold, shush loudly, add the swinging motion, and offer the pacifier — ideally all within a few seconds of each other.

White noise and other calming sounds

White noise works for colic because it recreates the continuous, loud soundscape of the womb. Before birth, babies are surrounded by the whooshing of blood flow, the gurgling of digestion, and the muffled rhythm of the outside world. Silence, by contrast, is unfamiliar and can be stimulating rather than calming.

Effective sources of white noise include:

• A fan or air purifier running continuously in the room
• Dedicated white noise or shusher devices
• White noise apps set to a steady whooshing or rain sound
• Running water (shower, sink) in an adjacent room

For active soothing, aim for around 65 dB — roughly the volume of a shower. Once your baby is calm and drowsy, you can reduce the volume. For background sleep noise, keep the sound machine at least 200 cm (about 7 feet) from the crib and no louder than 50–55 dB to protect developing hearing.

Safe sleep reminder: Never place a white noise device, phone, or pillow inside the crib. The sleep surface should be firm and flat with no objects other than the baby.

Probiotics: what the evidence shows

The gut microbiome hypothesis for colic has driven research into whether specific probiotic strains can reduce crying time. The most studied strain is Lactobacillus reuteri DSM 17938.

In a landmark randomized controlled trial published by Savino et al. in Pediatrics in 2010, breastfed infants with colic who received L. reuteri DSM 17938 daily showed approximately a 50% reduction in daily crying time compared to those who received simethicone (infant gas drops). Subsequent RCTs have largely supported this finding for breastfed babies.

However, the picture is less clear for formula-fed infants. Several trials in formula-fed babies found no significant benefit. The difference may relate to how breast milk supports the colonization of beneficial bacteria, or to compositional differences in the gut microbiome between breastfed and formula-fed infants.

What this means in practice:

• If your baby is breastfed and has colic, ask your pediatrician about L. reuteri DSM 17938 — it is the only probiotic with consistent RCT evidence for colic.
• If your baby is formula-fed, the evidence does not currently support routine probiotic use for colic.
• Never give any supplement to a newborn without first consulting your doctor.

What doesn't work (evidence-based)

Several remedies are commonly used for colic but are not supported by good evidence — and some carry risks.

• Gripe water: No randomized controlled trials support its use for colic. Many commercial formulations contain alcohol, sugar, sodium bicarbonate, or herbal extracts that are not recommended for infants. Major pediatric organizations do not endorse gripe water.
• Simethicone (infant gas drops): Designed to reduce intestinal gas bubbles, simethicone is widely sold for colic. However, most high-quality studies find no benefit compared to placebo. The 2010 Savino study found it no more effective than the control condition. It is considered safe, but there is little reason to expect it to help with true colic.
• Herbal teas: Fennel tea, chamomile tea, and similar infusions are sometimes suggested for colicky babies. These are not safe for infants — they can reduce breast milk intake by filling the stomach with liquid, and some herbs have pharmacological effects that are not appropriate for newborns.
• Eliminating foods from the maternal diet: For breastfeeding mothers, a blanket elimination of dairy, caffeine, or other foods is not supported by evidence unless there are other signs suggesting a food allergy (such as blood in the stool, eczema, or hives). If your doctor suspects a cow's milk protein allergy, a structured 2-week dairy elimination trial may be worth attempting — but this should be guided by your healthcare provider.

Feeding and burping adjustments

Even without true food allergy, some feeding adjustments may reduce discomfort during colic episodes.

For bottle-fed babies:

• Use a slower-flow nipple to reduce the rate at which air is swallowed during feeding.
• Take frequent burp breaks — every 1–2 oz (30–60 ml) — rather than waiting until the end of the feed.
• Try paced bottle feeding: hold the bottle horizontal, let the baby control the pace, and tilt the bottle down briefly every minute or so to allow a natural pause.

For breastfed babies:

• If you have a fast let-down reflex (baby coughs, splutters, or pulls off frequently), try a laid-back breastfeeding position to slow the flow using gravity.
• Burp thoroughly after each feeding.
• If your doctor suspects cow's milk protein sensitivity, try a strict dairy-free diet for 2 weeks and assess whether crying improves.

These adjustments address swallowed air and potential intolerance, which may contribute to discomfort in some babies. They will not resolve colic caused by neurological sensitivity, but they are low-risk and worth trying.

Taking care of yourself during colic

Prolonged infant crying is one of the most potent stressors a new parent can experience. Sleep deprivation compounds the effect. Research consistently shows that persistent infant crying is a significant risk factor for parental depression, anxiety, and — in rare but serious cases — impulsive behavior toward the baby.

Colic does not mean you are doing anything wrong. It does not mean your baby dislikes you, that you are feeding them incorrectly, or that they have a serious illness. It is a phase of neurological immaturity that resolves on its own.

Practical strategies for coping:

• Take turns. If you have a partner, divide the evening soothing shifts so neither of you is alone with a screaming baby for hours at a stretch.
• Accept help. If family or friends offer to come over so you can sleep, say yes. This is not a failure; it is good parenting.
• Put baby down safely and walk away. If you feel yourself losing control, place your baby on their back in the crib — even if they are crying — and step outside the room for 5 minutes. A crying baby in a safe crib is far safer than a baby held by an overwhelmed parent. This is the right thing to do.
• Call for support. Many countries have helplines for parents struggling with infant crying. Your pediatrician can also refer you to a parent support service.
• Remember the timeline. Colic peaks at 6 weeks and is almost always gone by 4 months. Keeping a log of how many weeks have passed can remind you that you are moving forward, even on the worst nights.

If you are experiencing persistent low mood, loss of enjoyment, or thoughts of harming yourself or your baby, speak to your doctor immediately. Postpartum depression and anxiety are common and treatable.

Track crying patterns with Bebblo

One practical step you can take right now is to log your baby's crying episodes. Recording the start time, end time, and any interventions you tried creates a visible pattern over days and weeks. This helps in two ways: it shows you whether the crying is clustering in the evening (consistent with colic) or spreading throughout the day (which may indicate a different cause), and it gives your pediatrician concrete data when you discuss what your baby is experiencing.

Bebblo lets you log crying, feeding, and sleep with a single tap, and stores the full history locally on your phone. Over time, you can see the trajectory: when crying is heaviest, what seems to help, and — most importantly — when it starts to ease. Watching the numbers go down week by week is one of the most reassuring things a colic-weary parent can see.

Disclaimer: This article references Harvey Karp MD, The Happiest Baby on the Block (2002), and Savino F et al., "A randomized double-blind placebo-controlled trial of Lactobacillus reuteri DSM 17938 versus simethicone in the treatment of infantile colic," Pediatrics 2010. This article is for general guidance only and does not replace advice from your pediatrician. If you are concerned about your baby's crying, always consult a qualified healthcare professional.

Log crying with Bebblo

Bebblo tracks crying, feeding, and sleep with a single tap, keeps a complete history on your phone, and helps you see patterns. Free, no mandatory account.