When it comes to feeding your baby, the first year is full of milestones and important choices. While parents often focus on introducing solids, what your infant drinks is just as critical for their safety and development. Pediatric guidelines are clear: babies under 12 months should stick to breast milk or formula—and perhaps small amounts of water after six months. Many popular beverages, however, can pose real risks to a baby's digestive system, kidneys, and developing teeth.
To help you navigate the confusion, here are seven common drinks to avoid for infants under one year old, based on current pediatric recommendations.
Cow's milk (as a main drink)
This might come as a surprise, but cow's milk is not suitable as a primary beverage for babies under 12 months. While it is fine in small amounts when mixed into solid foods (like yogurt or oatmeal), offering it as a drink can cause problems. Cow's milk is low in iron and can irritate the lining of a baby's digestive system, potentially leading to microscopic blood loss and anemia. It also contains high levels of protein and minerals that a baby's immature kidneys cannot handle well. Stick with breast milk or iron-fortified formula for the first year.
Fruit juice
The American Academy of Pediatrics advises against giving fruit juice to infants under 12 months unless it is specifically recommended by a doctor (for example, to treat constipation). Juice offers empty calories and sugar with none of the fiber found in whole fruit. Early exposure can lead to tooth decay, diarrhea, and a preference for sweet drinks over milk. If you do offer juice after age one, it should be 100% pasteurized juice, limited to 4 ounces per day, and served in a cup—never a bottle.
Plant-based milks (almond, soy, oat, rice)
Alternative milks are popular for adults, but they lack the balanced nutrition that formula or breast milk provides. Most plant-based milks are low in protein, fat, and key vitamins—especially vitamin D and calcium—that infants need for rapid brain and bone growth. Rice milk is particularly problematic due to trace levels of arsenic. Soy milk may be appropriate in rare cases under a doctor's guidance, but generally, these beverages are not recommended as replacements for breast milk or formula in the first year.
Soda and sugary drinks
This may seem obvious, but soda, sports drinks, sweetened teas, and any beverage with added sugar have no place in an infant's diet. These drinks can damage developing teeth, promote unhealthy weight gain, and crowd out the nutrient-dense milk your baby needs. Even small amounts can set the stage for a lifelong preference for overly sweet foods. If your baby is thirsty beyond milk, offer a few sips of plain water (after six months).
Honey-sweetened drinks or teas
Honey is a natural sweetener, but it poses a serious risk to infants under 12 months: infant botulism. Honey can contain spores of the bacterium Clostridium botulinum, which a baby's immature immune system cannot fight off. These spores can grow in the gut and produce a toxin that leads to muscle weakness, poor feeding, and even breathing difficulties. This risk applies not only to straight honey but also to any drink sweetened with honey, including herbal teas. For the first year, no honey in any form.
Caffeinated beverages (coffee, tea, cola)
Caffeine is a stimulant that can affect a baby's developing nervous system. Infants metabolize caffeine very slowly, so even small amounts can cause irritability, jitteriness, poor sleep, and increased heart rate. Coffee, iced tea, energy drinks, and colas should be strictly avoided. Herbal teas that are free of caffeine and honey can be offered occasionally after six months in very small amounts—and only after checking with your pediatrician—but they are not necessary.
Water (in large amounts before 6 months)
While water is essential for older children and adults, offering too much water to a baby under six months can be dangerous. Before that age, breast milk or formula is about 88% water and meets all of your baby's hydration needs. Excess water can fill up a tiny stomach, leaving less room for nutrient-dense milk. It can also lead to a dangerous condition called water intoxication, which dilutes the sodium in a baby's bloodstream and can cause seizures. After six months, small amounts of water (a few ounces per day) are fine—but never as a replacement for milk.
Bottom line: The safest, most nutritious drinks for babies under 12 months are breast milk and iron-fortified formula. After 6 months, small amounts of plain water are acceptable. Every other beverage has risks that outweigh any potential benefits.
When can babies start drinking other beverages?
Once your baby turns one, the rules change. You can gradually introduce pasteurized whole cow's milk (3.25% milk fat) as a main drink. Small amounts of 100% juice (no added sugar) can be offered, but ideally as part of a meal and in a cup. Always consult your pediatrician before introducing any new beverage, especially if your baby has allergies, digestive issues, or other health concerns.
