4-month-old excessive vomiting?

Frequent vomiting in a 4-month-old is really worrying, and I know you're not alone. First, let me clarify: vomiting is different from regurgitation (when liquid comes out gently from the corner of the mouth without force).

Common situations at 4 months:

1. Physiological reflux: Babies' lower food pipe sphincter isn't fully developed yet. In most babies, this goes away on its own by 6–12 months. If your baby is happy, eating well, and gaining weight normally, there's usually no problem.

2. Overfeeding: By 4 months, some babies keep nursing even when full. Their stomach is small, so the extra comes back up.

3. Swallowing air: Especially if they cry before feeding, they may swallow air bubbles that come back up when they vomit.

When to take this seriously:

See your pediatrician the same day if:

• Vomiting is projectile and happens after every feeding
• Vomit is greenish (bile), bloody, or looks like coffee grounds
• Your baby isn't gaining weight or is losing weight
• Your baby seems sluggish, unresponsive after vomiting
• Fever is present (38°C or higher means call 112)

At home, you can try:

• Keep baby upright 20–30 minutes after feeding (on your shoulder, in a bouncer)
• Feed smaller amounts more frequently
• Burp well (pause every 30–50 ml)
• Bottle-feed in semi-upright position, not lying flat

Note: 4 months is when reflux is often most noticeable. If your baby is happy, has good wet diapers, and is gaining weight, it usually gets better with time. But seeing your pediatrician once will set your mind at ease and rule out anything serious.

*Note: This is not medical advice; please consult your doctor about medication and dosing.*