Dr. Brown's Natural Flow Wide-Neck Nipple, Level 4 (6 pack)
A fast flow refill for older babies on Options+ wide neck bottles, and only for those bottles.
The short version
- Parents using Dr. Brown's Options+ wide neck bottles with an older baby
- Babies who take a long time to finish a bottle on Level 3 nipples
- Your bottles are narrow neck Dr. Brown's or another brand
- Your baby feeds well on Level 3; the maker does not tie moving up to age alone
- You need a nipple for thickened liquids; the maker makes a Y cut nipple for that
What owners like
- The Options+ system lets parents drop the vent later, which cuts down on parts to wash
- Flow levels are clearly labeled, so moving up a stage is simple
Common complaints
- With the vent in place there are several small parts to clean with different brushes
- Some parents report leaking from Options+ bottles, though many do not
Based on Dr. Brown's product pages and nipple level guide, Dr. Brown's Medical flow guidelines, the Amazon listing for this 6 pack, and one hands on Options+ bottle review from Baby Foode co written with a pediatric occupational therapist. Themes cover the bottle system as a whole, not this nipple pack alone..
Research scores
Scored from the maker's specs and what owners report. Drew's own notes and photos will refine these.
Ownership
Drew's hands-on notes for this product are on the way. Long-term updates will be added to this timeline.
What it does
Six fast flow silicone replacement nipples for Dr. Brown's Options+ wide neck bottles, labeled for babies 9 months and up, sold today under the Natural Flow name.
- Fast flow, the highest of Dr. Brown's numbered levels
- Wide, sloped nipple shape that Dr. Brown's describes as breast like
- Made to work with the bottle's internal vent system
- Maker says flow is consistent from nipple to nipple within a level
- Six pack covers a full set of bottles
The top standard flow level for Dr. Brown's Options+ wide neck bottles, for older babies who feed steadily and are taking larger amounts. It only fits Dr. Brown's wide neck bottles, and the maker sells a separate Y cut nipple for thicker liquids. Dr. Brown's says to go by your baby's feeding cues rather than the age on the box.
How it compares
Specs
- Flow
- Level 4, fast
- Suggested age
- 9 months and up (maker)
- Count
- 6 nipples
- Material
- 100% silicone, BPA free (maker)
- Fits
- Dr. Brown's Options+ wide neck bottles
- Care
- Top rack dishwasher, electric and microwave sterilizers, or boiling water (maker)
- 2 pack SKU
- WN4201
Worth knowing
- Dr. Brown's notes that a baby's preferred flow may differ from the suggested age range.
- The maker mentions Level 4 when a pediatrician has recommended thickening milk; follow the doctor's advice on flow.
Questions
When should a baby move to Dr. Brown's Level 4 nipples?
Dr. Brown's says to move up when feeds on Level 3 take longer. It suggests Level 4 for babies who feed consistently without difficulty and take larger amounts, such as those eating finger foods or drinking from a sippy cup.
What is the difference between Level 4 and the Y cut nipple?
Both are labeled 9 months and up. Dr. Brown's describes the Y cut as a fast flow nipple made for thicker liquids.
How can you tell if Level 4 is too fast?
Dr. Brown's Medical lists gulping, coughing, choking, bottle refusal and milk leaking from the mouth as signs the flow may be too fast.
Do Dr. Brown's wide neck nipples fit narrow bottles?
No. They are made for Options+ wide neck bottles; narrow bottles take the standard nipple.
Sources
- Dr. Brown's Natural Flow Wide-Neck Silicone Nipple, Level 4 (Dr. Brown's)
- Dr. Brown's Natural Flow Wide-Neck Baby Bottle Silicone Nipple, all levels (Dr. Brown's)
- Dr. Brown's Nipple Level Guide (Dr. Brown's)
- Parent/Caregiver Nipple Flow Guidelines (Dr. Brown's Medical)
- Dr. Brown's Wide-Neck Level 4 Fast Flow Nipple, 6-Pack (Amazon listing)
- Dr. Brown's Options+ Bottle Review (Baby Foode)
Researched 2026-10-02. We bought this product; our page is built from the maker's details and what owners report across reviews and forums. We never copy Amazon customer reviews.
