Why Does My Baby's Bottle Leak? Fixes for Dr. Brown's Nipples
By Dr. Brown's - Happy feeding™ | Published: 2026-10-23
Category: Tips & Care
Leaking from the nipple? Learn common causes and simple fixes for Dr. Brown's wide-neck bottle nipples, including alignment and vent issues.
Quick answer
A leaking Dr. Brown's nipple usually means the ring is too loose, the nipple isn't centered, or the vent system isn't fully sealed. Check these three spots first.
Why alignment matters
With Dr. Brown's wide-neck bottles, the nipple must sit perfectly flat in the ring. If the silicone edge is folded or pinched, milk will seep out around the base during feeding. This is the most common cause of nipple leaks and the easiest to fix.
The vent system and leaks
Dr. Brown's internal vent system reduces colic by allowing air to flow through the nipple. If the vent straw isn't pushed all the way into the nipple's stem, or if the vent is twisted, the seal breaks and liquid can escape. A quick re-seat usually solves it.
Diagnosis and fix steps
- Symptom: Milk drips from the side of the nipple during feeding, or you see wetness around the ring after shaking the bottle.
- Likely cause: The nipple is not centered in the ring, the ring is over-tightened or under-tightened, or the vent straw is not fully inserted into the nipple stem.
- Corrective action: 1. Unscrew the ring and remove the nipple. 2. Check that the vent straw is pushed firmly into the nipple's underside stem. 3. Center the nipple in the ring so the silicone lip sits evenly. 4. Screw the ring on until snug — not overly tight. 5. Test by tipping the bottle upside down; if it still leaks, repeat the check. If the leak persists after re-seating, inspect the nipple for tears or wear.
- When to replace: If the nipple has a visible crack, tear, or has become sticky or swollen, stop using it immediately. Replace with a new Dr. Brown's Silicone Nipple to restore the proper seal. Replace any damaged nipple right away to avoid leaks and ensure safe feeding.
Product facts
- Dr. Brown's Natural Flow Wide-Neck Baby Bottle Silicone Nipple: Dr. Brown's® Silicone Nipple, together with the Anti-Colic internal vent system, is clinically proven to reduce colic. A properly seated nipple and vent work together to prevent leaks while delivering the anti-colic benefit.
Dr. Brown's Natural Flow Wide-Neck Baby Bottle Silicone Nipple
