Last updated: February 19, 2019

Breast Milk Thickeners

Sara Fletcher
Published 3:50 pm

Breast milk thickeners are agents that aid in the thickening or adding consistency to breast milk and infant formula. These may come in the form of powder and also as gel mix. It thickens the liquid to a level that is similar to nectar or honey. Thickening of milk or baby food avoids gastroesophageal reflux or regurgitation in babies. Some babies need thickened milk or food. Thickening makes food easier to swallow and the milk much more comfortable to drink. There are more ways than one to thicken breast milk and baby food, and this guide will help you decide which one will be best for you.

Why use thickeners?

Some children or infants have difficulty and tend to choke on liquids when they drink that is why drinking thickened milk will be a lot safer for them. Breast milk thickeners are used for a couple of reasons. Thickeners also help in solving problems that may be experienced by your little one. Babies who have problems with swallowing often need their milk to be thickened. This problem is referred to as dysphagia. Babies with dysphagia will need to have their milk thickened so they can safely eat or drink.

Thickening expressed breast milk or infant formula also helps in the reduction of acid reflux in babies. Since babies still have an underdeveloped digestive system, breast milk or baby food that are too splashy or watery may tend to flow back up into the esophagus. This causes the baby to spit up, and thickened breast milk will help in reducing this problem. However, thickened are not the primary and sole way to treat reflux in babies. Most importantly, parents are advised to consult a healthcare provider or pediatrician.

Types of breast milk thickeners

Cereal Thickener

How to thicken milk using cereal

Nectar Thick

Use one and a half teaspoons of dry infant cereal for each ounce of formula. Parents must pulverize or ground up infant cereal. Do not use flake cereal.

Honey Thick

Use two and a half teaspoons of dry infant cereal for each ounce of formula. Parents must pulverize or ground up infant cereal. Do not use flake cereal. Do not give real honey to children under one year old.


Gerber Baby Cereal DHA and Probiotic Rice

gerber 1st foods baby cereal - rice, 16 ounces

Product description:

This rice cereal by Gerber has Iron for brain development and to help support learning ability. The DHA helps in supporting brain and eye development. Probiotic Bifidus BL helps support digestive health when eaten on a regular basis. This has essential nutrients such as Iron, Zinc, Calcium, Vitamin C, E and six B Vitamins for healthy development. Vitamins C, E, Zinc and 6 B vitamins for healthy growth. Calcium to help build healthy bones and teeth. This rice cereal is Non-GMO and has no artificial colors and flavors. Single grain infant cereals are ideal to check for food sensitivities and help in developing baby is eating and swallowing. The package of this product is BPA-free. (Gerber website

Earth’s Best Organic Infant Cereal, Whole Grain Rice

earths best rice cereal for babies

Product description:

Earth’s Best Organic® Brown Rice Infant Cereal is a perfect first food also can be used as a thickener, for your little one as they transition to solids. Made from whole grain brown rice, this delicious iron-fortified cereal contains no genetically engineered ingredients. The key benefits of this product are that its ingredients are Non-GMO, and are made from whole grains. This whole grain rice cereal is also iron fortified for infant growth and development. This product is free of artificial colors and flavors. (Earth’s Best website)

Happy Baby, Happy Bellies Organic Multigrain Cereal

happy baby organics organic probiotic baby cereal multigrain

Product description:

Our multi-grain organic probiotic baby cereal is excellent for babies ready for a heartier combination of oats, amaranth & quinoa. It is enriched with Iron and Choline for Baby’s development and contains probiotics to support digestive system health. This product may contain gluten. This is a very versatile multigrain cereal since it easily mixes with other food products. This includes 45% daily value of iron and 15% daily value of calcium. (Happy Family Organics website)

Beech-Nut Complete Rice Cereal


Product description:

The path to healthy eating starts with baby cereal. Stage 1 Beech-Nut rice cereal is made with tender rice for a creamy, easy-to-digest texture and provides 45% of baby’s daily value of iron with other vitamins and minerals. The benefits of this Beech-Nut rice cereal is that it is good for mixing and as a first food for starting solids. It has an easy-pour spout and curved grip prevents spilling with built-in measuring cap makes portioning a snap. Includes vitamins and minerals: 10% DV vitamin A, 20% DV vitamin D, 25% DV zinc, 20% DV calcium, 10% DV biotin. (Beech-Nut website



Gerber Single-Grain Oatmeal Baby Cereal

baby food cereal gerber

Product description:

The Gerber Single-Grain Oatmeal cereal is packed with iron to help support in baby’s learning ability. Your little one needs iron to help support healthy brain development. Just two servings of Gerber infant cereal meet 90% of your baby’s daily iron needs. Has essential nutrients such as Iron, Zinc, Calcium, Vitamin C, E and six B Vitamins for healthy development. This has vitamins C, E, Zinc and 6 B vitamins for healthy growth. Calcium to help build healthy bones and teeth. This product is not made with genetically engineered ingredients and has no artificial colors and flavors. Single-grain infant cereals are an ideal first solid food to check for food sensitivities, help develop baby’s eating skills and provide iron. The packaging by Gerber is made with no BPA. (Gerber website

Earth’s Best Certified Organic Whole Grain Oatmeal Cereal

earths best - organic whole grain oatmeal cereal - 8 oz.

Product description:

Earth’s Best Organic® Whole Grain Oatmeal is easily digestible. It is iron fortified for infant growth and development and is made with ingredients grown without potentially harmful synthetic pesticides. This product is made from whole grains and non-GMO ingredients. Iron-fortified for infant growth and development and has no artificial flavors or colors. (Earth’s Best website)

Happy Baby Organic Probiotic Baby Oatmeal Cereal with Choline

Happy baby organic probiotic baby cereal with choline

Product description:

The Happy Baby oatmeal organic probiotic baby cereal is perfect for baby’s first solid food and also for thickening. It is enriched with Iron and Choline for Baby’s development and contains probiotics to support digestive system health. This cereal may contain gluten. You can merely scoop and mix to desired consistency with the liquid of your choice — breast milk, formula, or water are all excellent. With this cereal, you can nourish your baby with  45% daily value of iron and 15% daily value of calcium. (Happy Family Organics website)

Beech-Nut Cereal Complete Oatmeal

beech nut complete baby cereal, rice, stage 1 (from about 4 months) - 8 oz

Product description:

Treat your little one to the creamy and comforting Beech-Nut oatmeal cereal. With a precise pour spout and measuring cap for convenience, our Stage 1 Oatmeal cereal is the best way for you both to start the morning. It is a great first food for starting solids and thickening. It has an easy-pour spout, and curved grip prevents spilling. Built-in measuring cap makes portioning a snap.Includes vitamins and minerals: 10% DV vitamin A, 20% DV vitamin D, 25% DV zinc, 20% DV calcium, 10% DV biotin. (Beech-Nut website


Gel or Powder Thickener

USDA Organic Gelmix

organic gelmix 125g jar

Product description:

This product harnesses the natural thickening properties of tapioca and carob bean gum resulting in a fine powder that is completely tasteless, odorless and smooth when dissolved. Our USDA Organic seal means we met the strict standards of the national organic program, ensuring our ingredients are not genetically modified, do not use potentially harmful pesticides or fertilizers, and are produced by methods that are better for the environment. The AAP and WHO strongly encourage breastfeeding infants exclusively for the first six months to benefit from its many healthful properties.

Gelmix thickens breast milk efficiently when thickening is recommended without significantly altering the natural balance of the infant diet. The CDC and AAP warn that the health risks of early introduction of cereals are numerous, yet thickening with rice cereal is still often recommended in GERD guidelines. Its ingredients have a long history of safe and effective use for infants requiring thickened feeds, meeting the strict US and international regulatory standards for its safe consumption by term infants. (Gelmix website)

Thick-It Original Thickener

thick it milk thickener

Product description:

Easily create any desired consistency, without changing taste or appearance. Thick-It is first healthcare food-thickening product on the market in 1987. Dissolve this easy-to-use, corn-starch-based thickener in your favorite foods and beverages – hot or cold. Mix this thickener with water, apple juice, orange juice, cranberry juice, coffee or tea, milk, nutritional supplement drinks or pureed foods. This thickener is convenient and dissolves instantly. It is reliable since it does not change appearance or taste of food or beverages. Easily digestible and does not bind fluids, dietary friendly and gluten free.  (Thick-It website)

SimplyThick Easy Mix Gel Thickener

Simply thick honey

Product description:

Ready to drink within seconds, not minutes. This can be used in a variety of beverages such as breast milk, hot or cold drinks, thicken water, coffee, juice, ice, soda, supplements, milk, tea, soup, beer, wine, mixed drinks, and more. SimplyThick is stable and will not thicken over time. Individual packets can easily fit into a pocket or a purse. And they are easy and convenient to take anywhere. They are convenient to use since they packed individually in single-use packs. No scoops, spoons, or open containers.

Simple and identical preparation regardless of consistency or beverage. No thickening charts. No messy powders. Regardless of who prepares the drink, always the same consistency. As a gel, can not form powder lumps. This thickener has soluble food fiber and adds few calories but is low in carbohydrates. Very low in sodium. Thickness level does not change over time, temperature and even in the presence of enzymes found in saliva. This is a quick, simple and easy to use the thickener. (SimplyThick website)

Thick & Easy Instant Food & Beverage Thickener

hormel thick and easy

Product description:

THICK & EASY® Instant Food & Beverage Thickeners are natural to use and safe for those with swallowing difficulties. You can thicken up all varieties of hot and cold foods and liquids to be enjoyed without affecting the taste. The powder blends quickly and smoothly to achieve nectar, honey or thick spoon consistencies. Also, a scoop is included in every canister along with mixing directions to thicken varying quantities of liquids. Individuals with dysphagia can enjoy tasty, nourishing foods while maintaining an adequately hydrated and healthy nutritional status. Suitable for children above three years of age. (Hormel Health Labs website) 



The hospital does not use thickeners for any infants who are younger than two weeks of age, or 42 weeks gestation if they were born prematurely. Extra caution should be observed when using thickeners in children younger than 12 months because their digestive system has not fully developed and are still immature.

Young infants may be limited in the products they can use and the amount of thickening that is safe. If you feed your baby with a bottle, you will need to find the right nipple type and flow rate to use with the thickened liquid. You make ask for your healthcare provider in this matter.

Each thickening agent has different benefits, ingredients, and mixing instructions. Your child’s healthcare provider will recommend a thickening agent based on your baby’s age and weight, the liquid that needs to be thickened (whether it is formula or breast milk), the cost or budget. Your child’s healthcare provider will give you a recipe and show you the correct way to mix the thickener into your child’s feeding liquid. Instructions will also be visible on the packaging of the thickener you will purchase.

Ideal thickness

If the formula is too thin, you are not accomplishing anything except increasing the number of calories per ounce—it will still splash. If the formula is too thick, the baby will not be able to get it out of the bottle and will get tired before she gets full. Pediatricians use these descriptions for the perfect thickness: “stage 1 baby foods” or “tomato sauce.” Commercial thickening companies use the terms “nectar,” “honey” and “pudding.” We tested real fruit nectars and found them to be too thin. Honey was far too thick. Tomato sauce and stage 1 foods are just about right.

Breast milk will thicken up fine, but a few minutes later it gets thin again. There is an enzyme in the breast milk (Amylase) that “digests” cereals and it will get thin after about 5 minutes. If your child chokes on thin liquids, thickening breast milk may help. However, if you want the milk to stay thick, try using commercial thickener made of Xanthan gum. The Munchkin Formula Mixer made it very easy for us to mix the formula that we used. It is cheap, simple and effective, and mixes the cereal completely at the push of a button. We started off with a whisk but switched to this mixer. Pediatricians usually recommend that you add 1 Tablespoon of cereal per every ounce of water; however, some cereals thicken much more than others.

Source: PAGER Association; Rackley et al.

How long should you be using a thickener

Parents  or health care providers use breast milk thickeners only for a certain period for most cases. Parents or health care providers even use them for a very short time or only until the baby will no longer have difficulty in swallowing safely. It is always important to consult your pediatrician or healthcare provider on when to stop or continue thickening the milk or food for your baby. Also, observe your baby’s response to the consumption of thickened milk or food.

Don’t stop thickening your child’s food until your child’s healthcare provider or a feeding therapist can test your child’s ability to swallow without problems.

Helpful Tips

  • Infant cereal does not mix well with breast milk. The enzymes in breast milk break down the cereal.  If you would like to keep breastfeeding or using expressed milk in a bottle, talk to your child’s doctor.
  • Check the nipple during the feeding to make sure the cereal has not clogged the nipple.  You may need to roll the nipple with your fingers or clean out the clog.
  • Talk with your child’s pediatrician o about the different types of oatmeal cereals on the market and how to arrive at a just-right consistency. The amount of oatmeal to add to the liquid (formula, breast milk, etc.) is dependent on your child’s condition. It is essential to follow the recommendations of your pediatrician or feeding therapist.
  • When your child is drinking it from a bottle, you may need to go up to a larger nipple size for the thickened milk to flow. Most feeding specialists now recommend either a faster flow nipple or commercially pre-cut, cross-cut nipples provided by the hospital.
  • Be sure that your child is sitting in an appropriate position, as it can affect his or her ease and enjoyment with the meal.
  • Make sure you are not overfeeding your child. If he or she is gaining weight rapidly, but spitting up a lot, try decreasing the amount at each feeding. Infants with reflux, for example, tend to do better with smaller, more frequent meals.

Source: American Academy of Pediatrics

Pros and cons of thickening


  • Milk/formula may stay down better and reduce the overall amount of acid reflux or choking.
  • May eliminate the need for medication.
  • Added calories for weight gain (if thickening with cereal).
  • May reduce lung complications for infants who aspirate.
  • Can help reduce chronic congestion and vomiting.


  • Might can make the choking and aspiration worse (swallow study can reduce this chance).
  • The baby may reduce formula/breast milk intake.
  • Can decrease formula intake enough that dehydration becomes an issue.
  • Often the baby still needs acid reflux medication.
  • Can cause constipation (rice cereal).

Source: Reflux Rebels


Infants taking liquids with thickening agents may face an increased risk of a severe disease called necrotizing enterocolitis (NEC). With NEC, the intestines become inflamed, and intestinal tissue dies. NEC is a life‑threatening condition. Treatment sometimes requires surgery. The U.S. Food and Drug Administration has reported 22 cases of NEC in infants who have taken a thickening agent called SimplyThick. For this reason, SimplyThick should not be used in preterm infants, infants under 12 months of age, children under the age of 12 years with a history of NEC.

Parents have been using infant rice cereal for many years since it is gluten-free and it rarely causes allergic reactions. However, some rice products, including infant rice cereals, may contain high levels of arsenic. Arsenic can harm your baby. To prevent harm, feed your child a well-balanced diet that includes many different grains. This will help lower your child’s risk of overeating of any one food. Also, feed your child only one serving of rice cereal per day. Thickening agents may also cause side effects such as constipation, gassiness, or loose stools. (2015 Intermountain Healthcare, Primary Children’s Hospital. Patient and Provider Publications.)

What to do

Connect with your child’s healthcare provider if you have any questions or concerns about using any of the thickening agents. If your child is using a thickening agent or has used one recently, watch for signs of NEC in your child. Call your healthcare provider right away if your baby experiences are bloating, green-tinged vomit, bloody stools, diarrhea, excessive coughing and any abnormal behavior or appearance.

Rating: 5.0/5. From 1 vote.
Please wait...