Does pear juice help with constipation?

Nobody has tested it. We found no randomized trial of pear juice for constipation in children or adults, and no review of one. A 2024 meta-analysis of foods, drinks and diets for chronic constipation in adults gathered 23 studies with 1714 participants, and none of them used pears or pear juice. What exists is a mechanism. In a randomized study of 104 healthy children aged 1 to 5, one serving of pear juice was incompletely absorbed in 84 percent of them, more than any other juice tested. The idea is that sugar the gut does not absorb draws water into the bowel. Whether that relieves constipation has never been measured.

Unsettled. The case for pear juice is an inference from absorption studies in healthy children. No study has followed the step from unabsorbed sugar to more frequent or softer stools in anyone who was constipated. The idea is plausible, and it is untested.

What the trials found

Fruit that has been tested for constipation

A 2022 meta-analysis pooled 11 randomized trials of fruit in people with functional constipation. Kiwifruit raised stool frequency by 0.26 bowel movements a week more than placebo (95% CI 0.22 to 0.30). Orange juice and palm dates showed no clear increase. None of the trials used pears. In the 2024 meta-analysis of adults the one juice was prune juice, in a single study. Pear juice was in neither analysis.

How much of the juice the gut absorbs

In the study of 104 children, incomplete absorption followed pear juice in 84 percent, apple juice in 41 percent and grape juice in 20 to 24 percent. In a randomized crossover study of 39 healthy children given 8.1 to 11 fl oz (240 to 330 ml), the breath test was positive after pear juice in 52.2 percent and after grape juice in 4.3 percent, and signs of discomfort appeared in 23 percent against 5 percent. These were children without constipation, and the studies counted unabsorbed sugar, not bowel movements.

The sugar alcohol behind it

Pear juice carries sorbitol, a sugar alcohol, along with more fructose than glucose. In a double-blind placebo-controlled study of 66 adults on a metabolic ward, 40 g a day of pure sorbitol in candy brought loose or liquid stools within 1 to 3 hours. That shows sorbitol can act as a laxative. The study did not use juice and did not measure how much sorbitol a glass of pear juice contains, and our sources do not give that number either.

Who should be careful

Not for everyone. The same unabsorbed sugar that might help one child can upset another. In the study of 104 children, parents reported diarrhea in six after pear juice, against two after apple juice and two after purple grape juice. The abstract does not give how many children drank each juice, so these counts cannot be turned into rates. In a double-blind randomized study of 60 children recovering from acute diarrhea, juices high in sorbitol and in fructose relative to glucose caused incomplete absorption and brought the diarrhea back.

Adults with fructose malabsorption are the group most likely to react. In 53 such adults, 4 weeks on a diet low in fructose and sorbitol significantly reduced bloating and stool frequency, in a study with no control group. Hereditary fructose intolerance is a rare inherited disorder in which fructose, sucrose or sorbitol cause symptoms, and a 2026 survey found all 15 Italian metabolic centers prohibit sorbitol. Pear juice contains both fructose and sorbitol, so it is out for anyone with that diagnosis.

Some people with birch pollen allergy also react to pears. In an oral challenge study of 15 adults with birch pollen allergy and a history of pear allergy, 14 reacted to Conference pears and 12 to Cepuna pears. That was fresh fruit, and nobody tested juice. For children, the American Academy of Pediatrics warns that the high sugar content of juice adds calories and raises the risk of dental caries. In the USDA survey database a bottle of baby pear juice is 4 fl oz, or 124 g.

What expert bodies say

The 2026 ESPGHAN and NASPGHAN guideline on functional constipation in children found no evidence to support fluid or fiber beyond the recommended daily amounts. Its full text does not mention juice at all. The American Academy of Pediatrics notes in its 2017 statement on juice that juice was sometimes recommended for children with constipation, and gives no estimate of how well it works. Advice that sorbitol-containing juices ease infant constipation is widely repeated, and we could only trace it to secondary sources.

If a baby or child is constipated, what to try is a question for the child's doctor, and the guideline is where that conversation starts. More on the fruit itself is on the pear page.

How we searched

What would change this answer

• A placebo-controlled randomized trial of 100 percent pear juice in infants, children or adults with functional constipation. None was registered on ClinicalTrials.gov on 7 October 2026.
• A dose-finding study of sorbitol-containing juices in constipated infants, which is the use the folk advice describes.
• A measured sorbitol content for pear juice sold today, which would show how far a normal serving is from the doses that loosen stools in adults.

Sources

1. ev-pjc-01 · Meta-analysis or systematic review · systematic review and meta-analysis · n = 23 studies (17 RCTs), 1714 participants
   We included 23 studies (17 RCTs, 6 uncontrolled; 1714 participants): kiwifruit (n = 7), high-mineral water (n = 4), prunes (n = 2), rye bread (n = 2), mango, fig, cereal, oat bran, yoghurt, water supplementation, prune juice, high-fibre diet, no-fibre diet (n = 1).
   
   Who: intervention trials (RCTs, non-randomized, uncontrolled) of foods, drinks and diets in adults with chronic constipation
   Effect: no pear or pear juice studies found; prune juice n = 1 study
   Certainty: The absence of pear is a conclusion from the list of interventions in the abstract; children are not covered.
   Aliment Pharmacol Ther, 2024 · checked 2026-10-07 · we read the abstract
2. ev-pjc-02 · Meta-analysis or systematic review · systematic review and meta-analysis of RCTs · n = 11 RCTs
   Subgroup meta-analysis by the type of fruits suggested that kiwifruits have significantly increased stool frequency [MD = 0.26, 95% CI (0.22, 0.30), P < 0.0001, I2 = 0, Figure 3], while palm date or orange juice may not increase the stool frequency
   
   Who: patients with functional constipation in randomized parallel or crossover trials of fruits or fruit products vs placebo
   Effect: kiwifruit MD +0.26 stools/week (0.22-0.30), I2 = 0; orange juice and palm date no increase; no pear arm
   Certainty: The absence of pear is from the list of fruits in the full text; the only juice (orange) did not change the frequency.
   Front Nutr, 2022, Effect of fruit intake on functional constipation: a systematic review and meta-analysis of randomized and crossover studies · checked 2026-10-07 · we read the fulltext
3. ev-pjc-03 · Randomized controlled trial(s) · randomized trial · n = 104
   Incomplete carbohydrate absorption (BH2 peak above 20 ppm) occurred more frequently after pear juice consumption (84%) than after apple juice (41%) or grape juice (white 20%, purple 24%) [p < 0.05].
   
   Who: healthy children about 1, 3 and 5 years old, one age-specific serving of pear, apple, white grape or purple grape juice, breath hydrogen test
   Effect: incomplete carbohydrate absorption: pear 84%, apple 41%, white grape 20%, purple grape 24% (p < 0.05)
   Certainty: Incomplete absorption is the osmotic mechanism, not a measurement of constipation; in 5-year-olds there was no difference between juices. Per Methods, pear juice has four times more sorbitol than apple juice.
   J Am Coll Nutr, 1997 · checked 2026-10-07 · we read the abstract
4. ev-pjc-04 · Randomized controlled trial(s) · randomized trial · n = 104
   Parents reported diarrhea in six children after pear juice, two after apple juice and two after purple grape juice and these children had the highest BH2 levels in their respective groups.
   
   Who: healthy children about 1, 3 and 5 years old, 24-hour parent symptom record after one serving of juice
   Effect: diarrhea: 6 after pear juice, 2 after apple, 2 after purple grape; these children had the highest breath hydrogen
   Certainty: The number of children per group is not given in the abstract, so we do not calculate proportions.
   J Am Coll Nutr, 1997 · checked 2026-10-07 · we read the abstract
5. ev-pjc-05 · Randomized controlled trial(s) · randomized crossover trial · n = 39
   Breath hydrogen test was more frequently positive (increase >20 part per million [ppm] above baseline) after pear juice (52.2%; mean, 36 +/- 33 ppm) than after grape juice (4.3%, 6 +/- 6 ppm).
   
   Who: healthy children, 8.1-11 fl oz (240-330 mL) of grape or pear juice in random order, breath hydrogen and electrogastrography
   Effect: positive breath hydrogen test 52.2% after pear juice vs 4.3% after grape juice; signs of discomfort 23% vs 5% (p < 0.03)
   Certainty: Mechanism; stool was not measured.
   J Clin Gastroenterol, 2000 · checked 2026-10-07 · we read the abstract
6. ev-pjc-06 · Randomized controlled trial(s) · randomized double-blind trial · n = 60
   Feedings of juice with high fructose/glucose ratios and sorbitol resulted in incomplete carbohydrate absorption and recurrence of diarrhea during the phase immediately after improvement of the illness.
   
   Who: children with acute diarrhea, fed commonly consumed fruit juices right after improvement
   Effect: incomplete carbohydrate absorption and recurrence of diarrhea with high fructose/glucose and sorbitol juices
   Certainty: Short abstract, without numbers; pear juice belongs to the juices with sorbitol and excess fructose.
   J Pediatr, 2001 · checked 2026-10-07 · we read the abstract
7. ev-pjc-07 · Randomized controlled trial(s) · randomized double-blind placebo-controlled trial · n = 66
   Sorbitol 40 g/day resulted in loose/liquid stools within 1-3 h of consumption.
   
   Who: adults on a metabolic ward, sorbitol 40 g/day in candy vs olestra vs placebo for 6 days
   Effect: loose/liquid stools within 1-3 h; more abdominal cramping, urgency and nausea than placebo
   Certainty: Pure sorbitol in a dose that a glass of juice cannot supply; no sorbitol content of juice here.
   Regul Toxicol Pharmacol, 2000 · checked 2026-10-07 · we read the abstract
8. ev-pjc-08 · Observational data · uncontrolled before-after trial · n = 53
   Depression scores were reduced by 65.2% after 4 weeks of diet (P < 0.0001), and there was a significant reduction of meteorism (P < 0.0001) and stool frequency (P < 0.01).
   
   Who: adults identified as fructose malabsorbers by breath H2, 4 weeks before and 4 weeks after a fructose- and sorbitol-reduced diet
   Effect: significant reduction of meteorism (P < 0.0001) and stool frequency (P < 0.01); depression scores down 65.2%
   Certainty: No control group; for people with fructose malabsorption, sorbitol-containing juice is a trigger, not a remedy.
   Scand J Gastroenterol, 2000 · checked 2026-10-07 · we read the abstract
9. ev-pjc-09 · Observational data · cross-sectional survey · n = 27 dietitians, 15 centers
   Symptoms occur after the ingestion of fructose, sucrose, or sorbitol, leading to metabolic toxicity.
   
   Who: Italian inherited metabolic disease centers managing hereditary fructose intolerance
   Effect: fructose, sucrose and sorbitol cause metabolic toxicity; management exclusively dietary
   Certainty: A survey of center practice; the quote is a definition of the disease from the abstract. Pear juice contains both fructose and sorbitol.
   Nutrients, 2026 · checked 2026-10-07 · we read the abstract
10. ev-pjc-10 · Observational data · single-blind oral food challenge · n = 15
    A total of 12 out of 15 participants developed symptoms during the 'Cepuna' food challenge and 14/15 reacted during the 'Conference' challenge.
    
    Who: birch pollen allergic patients with positive history of pear allergy, single-blind oral challenges with two pear cultivars
    Effect: symptoms in 14/15 (Conference) and 12/15 (Cepuna); objective symptoms 7 vs 2
    Certainty: Fresh pear, not juice; Bet v 1-type proteins are heat-sensitive, so pasteurized juice may react less, but this was not tested here.
    Nutrients, 2021 · checked 2026-10-07 · we read the abstract
11. ev-pjc-11 · Position of an expert body · clinical practice guideline (GRADE)
    There is no evidence to support physical activity, fluid, or fiber intake in the treatment of FC in children beyond the recommended daily amounts.
    
    Who: children aged 0-18 years with functional constipation
    Effect: no evidence for fluid or fiber beyond recommended amounts; juice not addressed
    Certainty: Juice and sorbitol-containing juices are not mentioned in the full text (grep juice/pear/prune: zero).
    J Pediatr Gastroenterol Nutr, 2026, ESPGHAN/NASPGHAN guidelines for treatment of functional constipation in children aged 0-18 years · checked 2026-10-07 · we read the fulltext
12. ev-pjc-12 · Position of an expert body · clinical report
    It was also sometimes recommended for children with constipation.
    
    Who: infants, children and adolescents
    Effect: historical use for constipation noted; no efficacy estimate
    Certainty: Abstract; the full AAP text is unavailable (403 in the previous run).
    Pediatrics, 2017 · checked 2026-10-07 · we read the abstract
13. ev-pjc-13 · Position of an expert body · clinical report
    High sugar content in juice contributes to increased calorie consumption and the risk of dental caries.
    
    Who: infants, children and adolescents
    Effect: higher calorie intake and caries risk
    Certainty: Position without its own analysis.
    Pediatrics, 2017 · checked 2026-10-07 · we read the abstract
14. ev-pjc-14 · Position of an expert body · dataset
    FNDDS 67212000 Baby Toddler juice, pear (fdc_id 2709377): 1 fl oz 31 g, 1 bottle (4 fl oz) 124 g, Quantity not specified 124 g
    
    Who: US dietary survey portion weights
    Effect: 1 fl oz 31 g; 1 bottle (4 fl oz) 124 g; quantity not specified 124 g
    Certainty: Serving from the dataset; a guideline on infant juice doses for constipation was not obtained.
    USDA FNDDS 2021-2023, food code 67212000, Baby Toddler juice, pear (fdc_id 2709377) · checked 2026-10-07 · we read the dataset