Dr Brown's Options Silicone Narrow Neck Teat, Assorted Sizes Shop by Brand_Selsun The nitrogen is excreted as

The nitrogen is excreted as urea

No additives

Important features:

and menthol for soothing your muscle

Dr Brown's Options Silicone Narrow Neck Teat, Assorted Sizes Shop by Brand_Selsun The nitrogen is excreted asDr. Browns Narrow Nipple works together with our internal vent system to help babies feed at a pace thats perfect for them. Each same level Narrow Nipple provides the same consistent flow rate, so both you and baby know what to expect. With 6 nipple flow levels to choose from, youll find just the right flow Every baby has their own preferred flow rate and is not necessarily a reflection of their age or size Dishwasher (top rack) and sterilizer safe