Orange juice, pomegranate juice, and prune juice are among the most beneficial choices during pregnancy, each offering specific nutrients that support both maternal health and fetal development. The best juice for you depends on what your body needs most, whether that’s folate for early brain development, fiber for constipation relief, or antioxidants for placental health. Here’s what the evidence says about each option.
Orange Juice for Folate and Vitamin C
Orange juice is one of the most nutrient-dense juices you can drink during pregnancy. A single 8-ounce glass of fresh-squeezed orange juice meets 100% of your daily vitamin C requirement and delivers a significant dose of folate (the natural form of folic acid). Folate is critical in the earliest weeks of pregnancy and throughout the first trimester, when your baby’s brain and spinal cord are forming. Getting enough folate helps prevent neural tube defects, the most common being spina bifida.
Vitamin C does double duty during pregnancy. It supports the growth of strong muscles, blood vessels, bones, and connective tissue in your developing baby. It also helps your body maintain collagen, the protein involved in tissue repair. And orange juice contains potassium, which helps keep blood pressure in check, a real concern as pregnancy progresses.
How Vitamin C Juices Help With Iron
One of the most practical reasons to drink vitamin C-rich juice during pregnancy is its effect on iron absorption. Many pregnant women take iron supplements or eat iron-rich plant foods like spinach, lentils, and fortified cereals. The iron in these sources is harder for your body to absorb than the iron found in meat. Vitamin C changes that. When vitamin C and iron are in your digestive system at the same time, the vitamin C converts iron into a form that dissolves more easily across a wide range of conditions in your gut, allowing significantly more of it to pass into your bloodstream.
This means drinking a small glass of orange juice, grapefruit juice, or another vitamin C-rich juice alongside an iron-rich meal or your prenatal vitamin can meaningfully improve how much iron you actually absorb. Iron deficiency is one of the most common nutritional problems in pregnancy, so this is a simple strategy worth using.
Pomegranate Juice for Placental Health
Pomegranate juice stands out for its exceptionally high concentration of polyphenols, plant compounds that act as powerful antioxidants. More than 90% of pomegranate juice’s antioxidant activity comes from a class of compounds called ellagitannins. Research published through the American Physiological Society found that pomegranate juice reduces oxidative stress in human placentas. In the study, placentas from women who drank pomegranate juice during pregnancy showed less oxidative damage compared to those from women who drank apple juice as a control.
Lab studies confirmed the mechanism: pomegranate juice protected placental cells from damage caused by low oxygen conditions, reducing cell death and stress markers. The placenta is your baby’s lifeline for oxygen and nutrients, so keeping it healthy matters throughout pregnancy. An 8-ounce glass a day is a reasonable serving, though pomegranate juice is calorie-dense, so factor it into your overall intake.
Prune Juice for Constipation Relief
Constipation affects a large proportion of pregnant women, driven by hormonal shifts that slow digestion and the pressure of a growing uterus on the intestines. Prune juice is one of the oldest and most effective natural remedies. It works because prunes contain both fiber and sorbitol, a natural sugar alcohol that draws water into the intestines and softens stool.
Michigan Medicine recommends a constipation-relief recipe that combines 3/4 cup of prune juice with 1 cup of applesauce and 1 cup of oat bran. You start with 1 to 2 tablespoons of this mixture each evening, followed by a full glass of water. After about two weeks, bowel movements typically become softer and more regular. If that amount isn’t enough, you can gradually increase to 3 to 4 tablespoons. Even drinking prune juice on its own, around 4 to 8 ounces daily, can make a noticeable difference.
Cranberry Juice and UTI Prevention
Urinary tract infections are more common during pregnancy, so many women wonder about cranberry juice. The evidence here is mixed. One clinical trial gave pregnant women cranberry juice from early pregnancy through delivery and found a trend toward fewer UTIs, particularly at higher doses. Women drinking about 720 mL (roughly 24 ounces) daily had a 57% lower rate of bacteria in their urine compared to the placebo group, though the results didn’t reach statistical significance.
The bigger problem was tolerability. About 23% of the women drinking cranberry juice dropped out because of gastrointestinal side effects, including nausea and stomach discomfort. Cranberry capsules caused far fewer issues, with only about 2% of participants reporting side effects. So if you want to try cranberry for UTI prevention during pregnancy, capsules may be more practical than forcing down large volumes of tart juice. If you do choose juice, look for versions without added sugar, as many commercial cranberry drinks are heavily sweetened.
Juices to Approach Carefully
Citrus and Heartburn
Heartburn is extremely common in pregnancy, especially in the second and third trimesters. If you’re dealing with reflux, highly acidic citrus juices like orange and grapefruit juice can make it worse. Clinical guidelines for heartburn in pregnancy specifically recommend avoiding or reducing intake of highly acidic citrus products. Switching to lower-acid options like pear juice, watermelon juice, or diluted apple juice can let you get nutrients from juice without triggering that burning sensation.
Sugar Content and Gestational Diabetes
Juice is concentrated fruit sugar without the fiber that whole fruit provides. The National Institutes of Health classifies fruit juice alongside soft drinks and pastries as foods high in sugar that should be limited during pregnancy, particularly for women managing or at risk for gestational diabetes. If you do drink juice, a serving is 3/4 cup (about 6 ounces), not a full tall glass. Eating whole fruit is almost always a better choice because the fiber slows sugar absorption and helps you feel full. For women with gestational diabetes, whole fruits are specifically recommended over juices for this reason.
Pasteurization Is Non-Negotiable
The FDA is clear on this point: pregnant women should only drink juices that have been pasteurized or otherwise treated to kill harmful bacteria. When fruits are peeled, cut, or squeezed, bacteria from the outside surface can contaminate the juice inside. Dangerous pathogens like E. coli O157:H7 can survive in acidic juices, including orange and apple juice, for extended periods. The acidity alone does not kill them.
Unpasteurized juices sold in refrigerated sections of grocery stores and health food stores are required to carry a warning label. But fresh-squeezed juice sold by the glass at farmers’ markets, roadside stands, and some juice bars has no such labeling requirement. Smoothies made with unpasteurized juice have been linked to foodborne illness outbreaks. During pregnancy, skip any juice that isn’t clearly labeled as pasteurized, regardless of how fresh or natural it looks.
Putting It Together
The best approach is to rotate juices based on what your body needs. Orange juice with your prenatal vitamin to boost iron absorption. A small glass of pomegranate juice for antioxidant support. Prune juice when constipation hits. Keep servings to about 6 to 8 ounces at a time, and prioritize whole fruits for the rest of your fruit intake. If heartburn is an issue, swap citrus for gentler options like pear or watermelon. And always check that the label says pasteurized.