Do Dr. Brown’s Bottles Leak? Unlocking the Truth Behind It!

Written by Daisy
Last updated:
Reviewed by Margaret

Do Dr. Brown’s bottles leak? Is it true that there are other options better than it even with the promising statistics and results it has given? Many parents have commended Dr. Brown’s; in fact, it has been a brand of choice by both new and old parents.

One thing to note, though, would be the claim that their bottles leak out. Although not all, many parents become frustrated because they notice it leaking – even brand-new ones! So, in this article, we will be clarifying everything you need to know about Dr. Brown’s bottles so you don’t have to!

 Just like other brands of bottles, Dr. Brown’s would also cause leakage if you do excessive shaking, if you assemble it incorrectly, if there are parts and components that are loose, or if the nipple you’re using is the wrong one.

Dr. Brown’s Bottles and Their Vent System

Before diving right in, it’s imperative to learn and find out the skeletal structure of Dr. Brown’s bottles. This way, we can navigate through the entire system smoothly and flawlessly.


Probably one of the most essential parts of a bottle. The cap is a screw-on lid that fits onto the bottle’s neck. It guarantees a tight seal and aids in keeping the contents fresh.


The cover is the bottle’s detachable top, which helps keep the contents clean. It also stops leaks while the bottle isn’t being used. In addition to that, the cover also keeps alien objects and creatures from landing on the nipple, which is both disgusting and health hazardous!

Teat or Nipple

A bottle wouldn’t be a bottle without the nipple! Other parents call it the teat, it is the component where the infant latches onto during milk time! I mean, without it, they wouldn’t be able to use their bottles! They are available in various flow rates to meet different phases of a baby’s consumption development, too!


A crucial part of Dr. Brown’s vent system would the insert. It creates a regulated flow of air and is designed to fit within the bottle. This is the actual component that prevents air from traveling through the bottle, coming in contact with the milk!


The collar is this ring-shaped part responsible for securing the nipple of the bottle. Its purpose is to tighten the nipple’s hold by screwing onto the bottle’s neck securely and appropriately.

Reservoir and Bulb

Attached to the bottom of the insert, the reservoir bulb is a little silicone component. When a baby is being fed, it serves as a reservoir for extra air that gets into the bottle. The tube, additionally, is the one that connects the bulb to the entire vent assembly.

Travel Disk  

The travel disk is a little, disc-shaped add-on that may be affixed to the collar of the bottle. When the bottle is not in use or during transit, it stops spills and leaks! It’s one of the magical exclusive components of Dr. Brown’s bottles, in any size!

These are the different parts and components of Dr. Brown’s bottles! It looks secure, doesn’t it? So, why do parents still report it to have leakages?

5 Reasons Why Dr. Brown’s Bottles Leak

I mean, all bottles have the tendency to leak. These bottles are not, in any way, fused with one another.

Out of all the feedback, comments, and outbursts regarding Dr. Brown’s bottles, there are five main points that parents are still unable to figure out why their bottles are leaking.

Reason #1: Incorrect Assembly of the Bottle

I don’t know about you, but one of the most obvious signs on its leakage would be its arrangement and assembly. A wrongly assembled Dr. Brown’s bottle is one of the main causes of leaks in their bottles.

I mean, it’s not just with Dr. Brown’s bottles – whatever bottle that’s incorrectly assembled has the chance to leak!

Leakage may occur if the collar, nipple, vent assembly, and reservoir bulb of the bottle are not firmly fastened. And when we say firmly fastened, we mean tightly secured at its maximum!

It is entirely crucial to check that each component is put together correctly, with the collar securely screwed onto the bottle and the vent assembly securely fastened.

Reason #2: You’re Shaking It Too Much!

The reason why you chose Dr. Brown’s is because of the many features it has – particularly the venting device that enables air to enter and exit the bottle.

In turn, excessive shaking can interfere with this system and cause unwanted leaks.

Mixing a formula or gently shaking a bottle of ingredients will reduce the likelihood of leakage. What do you do? Well, it would be best to remove the vent assembly first and then reattach it if you need to mix it hard!

Reason #3: There Are Damaged or Loose Parts

The many parts of the bottle could wear out or come loose over time, which would cause leaks.

Like how you would with other types of bottles, you’d want to regularly check the parts and replace any broken or worn-out pieces, including the vent assembly or nipple, to stop leaks.

What’s more is that you can prevent leaks by making sure that the collar is neither broken nor damaged! Check it out every once in a while!

Reason #4: The Feeding Position is Incorrect

Well, this goes out to all bottles, not just Dr. Brown’s, but have you ever considered if the feeding position is correct? Even though it’s not directly connected to the bottle, the feeding posture can have an impact on leakage.

The flow of milk or formula can be disrupted and leaks may result if the infant is laying too flat or is positioned so that the bottle is angled excessively.

By allowing the liquid to flow freely through the bottle without placing too much pressure on the vent system, holding the infant upright or semi-upright when feeding can help avoid leaks.

Reason #5: You Chose the Wrong Nipple

And last but most definitely not least would be choosing the correct component – the nipple, in particular.

Leaks may also result from using the incorrect nipple for the feeding stage of your baby.

Dr. Brown’s nipples are available in various flow rates that are tailored to the baby’s age and feeding capacity. If you use a nipple with a flow rate that is higher than what your infant requires, the milk or formula may flow excessively quickly, overtaxing the vent system and leading to leaks.

On the other hand, using a nipple with a slower flow rate can result in too much suction and leaks from insufficient airflow. To reduce leaks, choose the proper nipple based on your baby’s age and feeding preferences.

These are the five reasons why your Dr. Brown’s bottles don’t stop leaking! It could be one or more of these reasons, so, what do you do? Check if any of these are happening with your bottles!

How to Properly Use Dr. Brown’s Bottles?

There’s actually not a wrong or correct way of using these bottles. I mean, they’re your bottles, it’s not like you don’t “know” how to use them! However, the leakage might actually be caused of you not doing stuff correctly.


1. Make sure all bottle parts are assembled correctly and are clean before leaving.

2.Use the travel disk that came with your Dr. Brown’s bottles.

3.Put the collar below the travel disk, do this in this arrangement – before fastening and securing the cap.

4.Then, lastly, place them in a bag or container that is tightly sealed to ensure that they’re clean and tidy.

During the Feeding Process

1. Before letting your baby suck on the bottle, ensure that the vent component is installed and operating as it should. To prevent air from contaminating milk or formula, the vent tube should reach below the level of the milk.

2. When feeding, tilt the bottle just a little to keep the nipple full with milk and keep air out. This promotes consistency in the flow and lessens the possibility of colic or gas.

3. Keep an eye on your baby’s feeding schedule and, if required, change the nipple flow rate. To accommodate your baby’s feeding preferences and age, Dr. Brown’s nipples are available in a variety of flow rates.

Assembling the Milk in the Bottle

1. To preserve cleanliness, start by properly washing your hands.

2. Then, make sure that everything is clean and sterilized. Be sure to observe the cleaning and sterilizing directions provided by the manufacturer.

3. After that, start the assembly. Put the bottle together by firmly screwing the collar onto the bottle neck.

4. Then lastly, insert the vent components into the collar. Press it until it fits to attach it.

NOTE: Make sure there is a firm seal, screw the nipple onto the collar! That’s it! Once these are crossed out, you’re done!

Warming or Heating the Milk

1.  Remove both the vent assembly and nipple off the bottle before warming or heating the milk.

2. Then, the milk should be heated using a bottle warmer or warm water.

3. Reassemble the bottle by firmly fastening the vent assembly and nipple once the milk has been warmed.

There you have it! That is how you correctly use Dr. Brown’s bottles to avoid leakage!

3 Tips to Avoid Dr. Brown’s Bottles Leaking During Feeding

Of course, I wouldn’t leave you empty-handed! We’ve prepared three of the best and most effective tips and tricks for you to be free from leaks!

Tip #1: Minimizing Air Bubbles

There are a few strategies you may use to lessen the presence of air bubbles in your Dr. Brown’s bottles and the possibility of leaks during feeding.

To begin, instead of violent shaking, use slow stirring or swirling while making the milk or formula. You will eventually feel the pattern and movement while you do it, you’ll go along just fine!

Excessive shaking might inject air bubbles into the liquid, causing leaks. Therefore, it’s best to enable the liquid to settle for a few seconds after mixing to enable any air bubbles to float to the surface. When it’s time to fill the bottle, pour it carefully and at an angle to prevent air bubbles from forming.

QUICK TIP: You can accomplish this by slightly tilting the bottle!

Tip #2: Choosing the Correct Nipple

When using Dr. Brown’s bottles, proper nipple selection is critical for preventing leaks. Think about it, would your newborn be comfortable in sucking a nipple that has a huge hole? It is critical to select the proper breast flow rate based on your baby’s age and feeding capabilities.

Dr. Brown’s nipples are developed with varying flow rates to correspond to newborn developmental stages. You can choose from the Preemie Nipple (0 months+), Levels 1 to 4 Nipple (0, 3, 6, 9 months, respectively), and the Y-Cut Nipple (9 months+).

Using a nipple with a flow rate that is too fast for your kid might cause milk or formula to flow too quickly, overloading the bottle’s vent system and causing leaks. Moreover, if you use one that has a slightly slower flow rate than your baby requires can result to excessive suction – more than what you think! This would inhibit correct airflow, resulting in leaks due to the inconsistent pressure.

Tip #3: The Correct Vent System Usage  

Lastly, by making sure that you are utilizing the vent system correctly. I mean, what did you buy Dr. Brown’s bottles for?

Start by checking that all components are clean and undamaged, including the collar, nipple, vent assembly, reservoir bulb, and reservoir tubing. When all of the components are ready, tighten the collar around the bottle neck.

Then, insert the vent assembly into the collar, ensuring sure it is properly pulled down. Attach the nipple to the collar and tighten it up.

Signs When to Stop Using Dr. Brown’s Vent

The vent is actually one of the few components that make a Dr. Brown’s bottle as it is. But, is there a time when you wouldn’t need using the system anymore?

Let’s take a look at a few factors you might want to consider:

Recommended Age Range

Don’t worry, the manufacturer will usually offer advice on the optimum age range for utilizing the vent system.

These recommendations are based on babies’ average developmental milestones and eating patterns. For precise instructions, refer to the manufacturer’s guidelines.

NOTE: It will be different from one baby to another, so, just because other babies experienced it doesn’t mean yours should, too!

Developmental Milestones and Feeding Patterns

Another would be the overall development of your baby. The eating habits and developmental milestones of your infant might impact the decision to discontinue with the system. Here are some of the things you might want to look at:

–   Better and Improved Head Control

–   Solid Meal Transition

–   Sucking Strength and Speed

Exploring Alternative Bottle Options

We’ve all thought about this, we all know this – Dr. Brown’s bottles are somewhat pricey and much more expensive than other brands’ bottles. And even though they are a great choice for the majority of parents, recurring leakage could still be a factor.

If you’re considering switching, here are a few alternatives you might want to look into:

Comotomo Baby Bottles

The brand’s bottles are made with soft, squeezable silicone that has a skin-like touch and gives newborns a natural sensation. They have a broad neck that makes cleaning and filling simple.

The bottles include twin anti-colic vents to decrease colic symptoms and avoid excessive air intake. They are also resistant to heat and may be used in the microwave, dishwasher, and sterilizer.

Philips Avent Anti-Colic Bottles

These bottles include an anti-colic valve mechanism that helps babies with colic symptoms and discomfort.

They have a broad nipple shape that simulates nursing and facilitates a solid latch. The bottles are simple to assemble and clean, and they come in a variety of sizes to meet your baby’s demands.

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If you still have questions unanswered, don’t worry, we got you! We gathered some of the questions new and old parents ask about Dr. Brown’s bottles, and we answered it for you!

Do Dr. Brown’s Bottles Leak From the Cap?

Dr. Brown’s bottles seldom leak from the cap. Leaks are most usually caused by faulty installation, loose or broken components, excessive shaking, or wrong nipple selection.

When Do I Stop Using Dr. Brown’s Vent System?

When your baby’s colic symptoms improve, they can take a quicker flow of milk without swallowing extra air, or they reach the manufacturer’s suggested age range, you can consider discontinuing usage of Dr. Brown’s vent system. Consult your physician for specific advice.

Are Dr. Brown’s Bottles For You?

So, whether you were asking Do Dr. Brown’s bottles leak or if you were interested in switching to it, do you still consider it? The brand has made a name for itself, that’s why millions of parents around the world use it.

Like other brands, leakage could happen from time to time too, there’s no escape from it. So, if you weigh that it’s something essential especially for your baby, consider it! Otherwise, shop around and find something that would suit you better. 

Photo of author
Daisy Martinez, a Certified Financial Planner and mother of two, blends finance expertise from Ohio State and Anderson School of Management with hands-on parenting insights. Founder of "" and "", she's passionate about guiding parents in financial and parenting realms.

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