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Dried Plum (Prunes, Prunus domestica)

Prunus domestica
Evidence Level
Moderate
7 Clinical Trials
6 Documented Benefits
3/5 Evidence Score

Prunes are dried plums, the fruit of Prunus domestica, eaten whole or as prune juice. By USDA data, 100 g of prunes provides about 240 kcal, 7.1 g of fiber and 732 mg of potassium, and a composition review reported about 14.7 g of sorbitol and 184 mg of phenolic compounds per 100 g. Standard prune juice is filtered and has little fiber but still contains sorbitol. In randomized trials, 80 to 120 g of prunes a day increased stool weight and frequency in healthy adults who ate little fiber, and prunes or a prune juice improved stool frequency or stool form in adults with infrequent or hard stools. Bone research is inconsistent: in postmenopausal women, 50 g a day kept hip bone density steady over a year, but 100 g a day did not, two year-long trials in men found no change, and a pooled analysis found no significant effect. Prunes are a food, not a laxative drug, and can cause gas.

Studied Dose Bowel trials: 50 g of prunes twice daily (100 g/day) for 3 weeks, 80 or 120 g/day for 4 weeks, or 54 g/day of a prune juice for 8 weeks. Bone trials: 50 g/day (about 5 to 6 prunes) or 100 g/day for 6 to 12 months.
Active Compound Whole dried fruit of Prunus domestica: dietary fiber, sorbitol and phenolic compounds, mainly neochlorogenic and chlorogenic acids. Standard prune juice is filtered and keeps the sorbitol but little of the fiber.

Benefits

Stool frequency and consistency with daily prunes

In a single-blind crossover in 40 adults with chronic constipation, 50 g of prunes twice daily for 3 weeks gave more complete bowel movements a week and better stool consistency than fiber-matched psyllium; straining and overall symptoms did not differ. In a later US trial with no placebo group, 100 g a day gave responder rates similar to kiwifruit and psyllium, though more people were dissatisfied with prunes than with kiwifruit.

Supported by Trial 1

Stool weight and frequency in adults who eat little fiber

In a 4-week randomized trial of 120 healthy adults with low fiber intakes and 3 to 6 stools a week, 80 g or 120 g of prunes a day increased stool weight and stool frequency compared with a water-only control. Whole gut transit time did not change, and flatulence was more common on prunes.

Supported by Trial 2

Softer stool form with prune juice

In a double-blind trial in 84 Japanese adults with chronic constipation, 54 g a day of a prune juice for 8 weeks lowered the share of hard, lumpy stools and raised the share of normal stools compared with a matched placebo, without more loose stools, and improved constipation and hard-stool scores. The juice maker partly funded the trial and employed two authors.

Supported by Trial 3

Hip and spine bone density in postmenopausal women

In a 12-month trial in 235 postmenopausal women, total hip bone density fell 1.1% with no prunes but held near baseline (down 0.3%) with 50 g a day; the 100 g group showed no significant difference from control and 41% of it dropped out. In an earlier year-long trial that randomized 160 women (100 analyzed), 100 g a day raised spine and forearm density compared with dried apple.

Supported by Trial 4, Trial 5

Bone turnover markers and bone density in older women and men

In 48 older women with low bone mass, 50 g or 100 g a day for 6 months prevented loss of total body bone density versus control and lowered the bone resorption marker TRAP-5b. In men, two year-long trials found no change in bone density with 50 g or 100 g a day, though some markers shifted. A pooled analysis of trials in postmenopausal women found no significant effect at any bone site; the spine result was borderline.

Supported by Trial 6, Trial 7

A whole-fruit source of fiber, sorbitol, potassium and phenolics

By USDA data, 100 g of prunes supplies about 7.1 g of fiber, 732 mg of potassium, 59.5 mcg of vitamin K and 38.1 g of sugars. A composition review reported about 14.7 g of sorbitol and 184 mg of phenolic compounds per 100 g, mainly neochlorogenic and chlorogenic acids. These are nutrient amounts, not tested outcomes.

Supported by Trial 1, Trial 2

Mechanism of action

1

Sorbitol and fiber reaching the colon

A composition review proposed that the high sorbitol content of prunes and prune juice (about 14.7 g and 6.1 g per 100 g) could explain their laxative action, with phenolic compounds possibly adding to it. The review described juice as filtered and lacking fiber, although the juice in one placebo-controlled trial did contain pectin.

2

More stool bulk and shifts in gut bacteria

In a 4-week trial, prunes raised stool weight without changing whole gut transit time, Bifidobacteria rose more than in the control group, and short-chain fatty acids and stool pH did not change. In a 12-month trial in postmenopausal women, prunes shifted gut microbiome composition and enriched Lachnospiraceae; links to health outcomes are correlations.

3

Slower bone resorption (marker and animal data)

In two trials in postmenopausal women, prunes lowered the bone breakdown marker TRAP-5b, but a 3-month trial saw no change in resorption markers and a pooled analysis found no significant marker differences. In estrogen-deficient mice, the carbohydrate fraction of dried plum suppressed bone formation and resorption, the polyphenol fraction briefly lowered formation, and both altered gut bacteria.

Clinical trials

1
Prunes vs Psyllium: 8-Week Single-Blind Crossover
PubMed

Randomized, single-blind crossover: prunes 50 g twice daily or psyllium 11 g twice daily (each about 6 g fiber a day) for 3 weeks each, with a 1-week washout. (Attaluri et al. 2011, Aliment Pharmacol Ther)

40 adults with chronic constipation (37 women, 3 men; mean age 38).

Complete spontaneous bowel movements per week (the primary outcome) and stool consistency improved more with prunes than with psyllium (P < 0.05). Straining and global constipation symptoms did not differ between treatments. Both were rated equally palatable and were well tolerated. Small, short and single-blind.

2
Two Prune Doses vs Water in Low-Fiber Eaters: 4-Week RCT
PubMed

Parallel-group randomized controlled trial with blinded outcome assessors: 80 g/day prunes plus 300 ml water, 120 g/day prunes plus 300 ml water, or 300 ml water alone for 4 weeks; primary outcome stool weight from 7-day collections. (Lever et al. 2019, Clin Nutr)

120 healthy adults with low fiber intakes and 3 to 6 stools a week.

Stool weight rose by about 22 g/day (80 g) and 33 g/day (120 g) versus a small fall with water (P = 0.026). Stool frequency was higher at 80 g (6.8 a week) and 120 g (5.6) than control (5.4) (P = 0.023). Whole gut transit time, short-chain fatty acids and stool pH did not change; flatulence was more common with prunes.

3
Prune Juice vs Placebo: 8-Week Double-Blind RCT (maker-funded)
PubMed

Double-blind, randomized, placebo-controlled trial of 54 g/day of a prune juice or a flavor- and color-matched placebo for 8 weeks; partly funded by MIKI Corporation, which employed two authors. (Koyama et al. 2022, Am J Gastroenterol)

84 Japanese adults aged 20 to 75 with treatment-naive chronic constipation by Rome IV criteria (42 per group).

From week 3, the share of hard and lumpy stools was lower and the share of normal stools higher than on placebo, with no rise in loose or watery stools. By week 8, constipation and hard-stool symptom scores were better than placebo. No adverse events or liver or kidney lab abnormalities were reported.

4
The Prune Study: 50 g vs 100 g a Day for 12 Months
PubMed

Single-center, parallel-arm randomized controlled trial of 50 g/day or 100 g/day prunes versus a no-prune control for 12 months, with bone density measured every 6 months. (De Souza et al. 2022, Am J Clin Nutr)

235 postmenopausal women (mean age 62): 78 control, 79 on 50 g and 78 on 100 g of prunes a day.

Total hip bone density fell 1.1% in the control group but only 0.3% with 50 g a day, a significant group by time difference (P < 0.05). The 100 g group did not differ from control, and its dropout rate was 41% versus 15% at 50 g and 10% in controls. A fracture risk score worsened in controls at 6 months but held steady in the pooled prune groups.

5
Dried Plum vs Dried Apple for One Year in Postmenopausal Women
PubMed

Randomized controlled trial of 100 g/day dried plum or dried apple (comparative control) for 12 months; all participants took 500 mg calcium and 400 IU vitamin D daily. (Hooshmand et al. 2011, Br J Nutr)

160 women 1 to 10 years past menopause, not on hormone therapy or bone-active medicines, were randomized; 100 were analyzed (55 dried plum, 45 dried apple).

Dried plum increased bone density at the ulna (forearm) and spine compared with dried apple. Compared with baseline, only the dried plum group had lower bone turnover markers (bone-specific alkaline phosphatase and TRAP-5b). The control was another dried fruit, not a no-fruit group.

6
Two Doses of Dried Plum for 6 Months in Older Women
PubMed

Randomized controlled trial of 50 g/day or 100 g/day dried plum versus control for 6 months. (Hooshmand et al. 2016, Osteoporos Int)

48 women aged 65 to 79 with low bone mass (osteopenia).

Both doses prevented the loss of total body bone density seen in the control group (P < 0.05). The resorption marker TRAP-5b fell by 3 months and stayed lower at 6 months with both doses; the formation marker bone-specific alkaline phosphatase did not change. A small, short trial.

7
Prunes and Bone in Older Men: One-Year RCT (no change in bone density)
PubMed

Randomized controlled trial of 100 g/day, 50 g/day or 0 g/day prunes for 12 months; every group also took a multivitamin with 450 mg calcium and 800 IU vitamin D3. Funded by USDA-NIFA; prunes donated by the California Prune Board. (Ormsbee et al. 2026, Nutrients)

62 men aged 55 to 80 with spine T-scores from -0.1 to -2.5 were enrolled and 59 completed (23 on 100 g, 23 on 50 g, 13 controls); recruitment fell short of the planned 200.

Neither dose changed total body or lumbar spine bone density compared with the calcium and vitamin D control. Osteoprotegerin fell less in both prune groups, and TRAP-5b rose less in the 100 g group, than in controls; the authors called these marker differences exploratory and not evidence of a bone benefit.

Side effects and drug interactions

Common Potential side effects

Gas is the most common complaint: in a 4-week trial, flatulence was more frequent with 80 to 120 g of prunes a day than with water. Starting with a smaller amount may help.
Prunes are rich in sorbitol (about 14.7 g per 100 g in one composition review), which is linked to their laxative action; cut back if stools become too loose.
100 g of prunes supplies about 240 kcal and 38.1 g of sugars (USDA data). In a 12-month trial, 41% of women assigned 100 g a day dropped out, compared with 15% at 50 g a day.
In a placebo-controlled prune juice trial, no adverse events or liver or kidney lab abnormalities were reported over 8 weeks.

Important Drug interactions

The prune trials cited here did not study drug interactions.
Warfarin: 100 g of prunes contains about 59.5 mcg of vitamin K (USDA data); if you take warfarin, keep your intake steady and talk to your prescriber before adding a daily prune habit.
Potassium: 100 g of prunes provides about 732 mg of potassium (USDA data). If you have kidney disease or have been told to limit potassium, ask your doctor before eating large amounts daily.
If you already use a laxative or fiber supplement, note that the trials tested prunes on their own; add them gradually and watch stool consistency.

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Frequently asked questions about Dried Plum (Prunes, Prunus domestica)

How many prunes a day were used in studies?

Bowel trials used 80 to 120 g of prunes a day, or 50 g twice daily. Bone trials used 50 g a day, which the researchers describe as about 5 to 6 prunes, or 100 g a day. In a year-long trial, 50 g a day was much easier to stick with than 100 g.

Is prune juice as useful as whole prunes?

Standard prune juice is filtered, so it has little fiber, but it still contains sorbitol (about 6.1 g per 100 g by one review). In one placebo-controlled trial, 54 g a day of a prune juice for 8 weeks reduced hard stools and increased normal stools. The bone trials all used whole prunes.

Do prunes support bone health?

The results vary. In postmenopausal women, 50 g a day helped keep hip bone density steady over a year, and some trials showed less bone breakdown on blood markers. But 100 g a day did not beat control in the largest trial, two year-long trials in men found no change in bone density, and a pooled analysis found no significant effect on bone density or bone markers, with only a borderline spine result.

How are prunes different from psyllium or senna?

Prunes are a whole food that supplies fiber, sorbitol and phenolic compounds. Psyllium is a concentrated gel-forming fiber taken with water, and senna is a stimulant laxative sold in the US as an over-the-counter drug for short-term use. In head-to-head trials, prunes did as well as or better than psyllium on stool frequency and consistency.

What is Dried Plum?

Prunes are dried plums, the fruit of Prunus domestica, eaten whole or as prune juice. By USDA data, 100 g of prunes provides about 240 kcal, 7.1 g of fiber and 732 mg of potassium, and a composition review reported about 14.7 g of sorbitol and 184 mg of phenolic compounds per 100 g.

What is Dried Plum used for?

Dried Plum is researched primarily for Gut Health and Bone Health. In a single-blind crossover in 40 adults with chronic constipation, 50 g of prunes twice daily for 3 weeks gave more complete bowel movements a week and better stool consistency than fiber-matched psyllium; straining and overall symptoms di…

What is the recommended dosage of Dried Plum?

The clinically studied dose is Bowel trials: 50 g of prunes twice daily (100 g/day) for 3 weeks, 80 or 120 g/day for 4 weeks, or 54 g/day of a prune juice for 8 weeks. Bone trials: 50 g/day (about 5 to 6 prunes) or 100 g/day for 6 to 12 months. Always follow the product label and check with a healthcare provider for personal advice.

Is Dried Plum safe, and does it have side effects?

Side effects and cautions reported for Dried Plum include: Gas is the most common complaint: in a 4-week trial, flatulence was more frequent with 80 to 120 g of prunes a day than with water. Starting with a smaller amount may help. Prunes are rich in sorbitol (about 14. It may also interact with some medications. Dried Plum is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does Dried Plum interact with any medications?

Possible interactions include: The prune trials cited here did not study drug interactions. Warfarin: 100 g of prunes contains about 59.5 mcg of vitamin K (USDA data); if you take warfarin, keep your intake steady and talk to your prescriber before adding a daily prune habit. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for Dried Plum?

NutraSmarts rates the evidence for Dried Plum as Moderate (3 out of 5). It is backed by 7 clinical trials and 16 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(16 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Attaluri A, Donahoe R, Valestin J, Brown K, Rao SS. Randomised clinical trial: dried plums (prunes) vs. psyllium for constipation. Aliment Pharmacol Ther. 2011;33(7):822-8. doi: 10.1111/j.1365-2036.2011.04594.x.PubMedUsed to support: Single-blind randomized crossover in 40 adults with chronic constipation (37 women): prunes 50 g twice daily and psyllium 11 g twice daily, each giving about 6 g fiber a day, for 3 weeks each. Complete spontaneous bowel movements per week and stool consistency improved more with prunes; straining and global symptoms did not differ. Both were well tolerated.
  2. Lever E, Scott SM, Louis P, Emery PW, Whelan K. The effect of prunes on stool output, gut transit time and gastrointestinal microbiota: A randomised controlled trial. Clin Nutr. 2019;38(1):165-173. doi: 10.1016/j.clnu.2018.01.003.PubMedUsed to support: Randomized controlled trial in 120 healthy adults with low fiber intakes and 3 to 6 stools a week: 80 g or 120 g of prunes a day for 4 weeks increased stool weight and stool frequency compared with water alone. Whole gut transit time, short-chain fatty acids and stool pH did not change; Bifidobacteria rose more than in controls, and flatulence was more frequent with prunes.
  3. Koyama T, Nagata N, Nishiura K, Miura N, Kawai T, Yamamoto H. Prune Juice Containing Sorbitol, Pectin, and Polyphenol Ameliorates Subjective Complaints and Hard Feces While Normalizing Stool in Chronic Constipation: A Randomized Placebo-Controlled Trial. Am J Gastroenterol. 2022;117(10):1714-1717. doi: 10.14309/ajg.0000000000001931.PubMedUsed to support: Double-blind placebo-controlled trial in 84 Japanese adults with chronic constipation: 54 g a day of a prune juice for 8 weeks reduced hard and lumpy stools, increased normal stools without more loose stools, and improved constipation and hard-stool symptom scores versus placebo, with no adverse events reported. Partly funded by MIKI Corporation, which employed two of the authors.
  4. Lever E, Cole J, Scott SM, Emery PW, Whelan K. Systematic review: the effect of prunes on gastrointestinal function. Aliment Pharmacol Ther. 2014;40(7):750-8. doi: 10.1111/apt.12913.PubMedUsed to support: Systematic review that found four randomized trials, one in constipation and three in people without it. In constipation, prunes beat psyllium on stool frequency and consistency; in people without constipation, prunes softened stools in one trial and raised stool weight in another. The authors judged the evidence for other outcomes and for people without constipation to be weak and called for more rigorous research.
  5. Chey SW, Chey WD, Jackson K, Eswaran S. Exploratory Comparative Effectiveness Trial of Green Kiwifruit, Psyllium, or Prunes in US Patients With Chronic Constipation. Am J Gastroenterol. 2021;116(6):1304-1312. doi: 10.14309/ajg.0000000000001149.PubMedUsed to support: Partially randomized 4-week trial in 79 US adults with chronic constipation comparing two green kiwifruit, 100 g of prunes or 12 g of psyllium a day. Responder rates on the primary endpoint were similar. Compared with baseline, all three raised weekly complete bowel movements, prunes and kiwifruit improved stool consistency, and all three reduced straining; fewer people were dissatisfied with kiwifruit than with prunes or psyllium. No placebo group.
  6. De Souza MJ, Strock NCA, Williams NI, Lee H, Koltun KJ, Rogers C, Ferruzzi MG, Nakatsu CH, Weaver C. Prunes preserve hip bone mineral density in a 12-month randomized controlled trial in postmenopausal women: the Prune Study. Am J Clin Nutr. 2022;116(4):897-910. doi: 10.1093/ajcn/nqac189.PubMedUsed to support: 12-month randomized controlled trial in 235 postmenopausal women: total hip bone density fell 1.1% in controls and 0.3% with 50 g of prunes a day, a significant difference, while the 100 g group did not differ from control and had a 41% dropout rate. A hip fracture risk score was maintained in the pooled prune groups.
  7. Hooshmand S, Chai SC, Saadat RL, Payton ME, Brummel-Smith K, Arjmandi BH. Comparative effects of dried plum and dried apple on bone in postmenopausal women. Br J Nutr. 2011;106(6):923-30. doi: 10.1017/S000711451100119X.PubMedUsed to support: Randomized trial in 160 postmenopausal women (100 analyzed, per a 2026 meta-analysis) given 100 g/day dried plum or dried apple, plus calcium and vitamin D, with measurements to 12 months: dried plum increased ulna and spine bone density compared with dried apple, and only dried plum lowered the bone turnover markers bone-specific alkaline phosphatase and TRAP-5b from baseline.
  8. Hooshmand S, Kern M, Metti D, Shamloufard P, Chai SC, Johnson SA, Payton ME, Arjmandi BH. The effect of two doses of dried plum on bone density and bone biomarkers in osteopenic postmenopausal women: a randomized, controlled trial. Osteoporos Int. 2016;27(7):2271-2279. doi: 10.1007/s00198-016-3524-8.PubMedUsed to support: Randomized controlled trial in 48 women aged 65 to 79 with low bone mass: 50 g or 100 g of dried plum a day for 6 months prevented the loss of total body bone density seen in controls and lowered the resorption marker TRAP-5b, while bone-specific alkaline phosphatase did not change. The authors describe 50 g as about 5 to 6 dried plums.
  9. Hooshmand S, Gaffen D, Eisner A, Fajardo J, Payton M, Kern M. Effects of 12 Months Consumption of 100 g Dried Plum (Prunes) on Bone Biomarkers, Density, and Strength in Men. J Med Food. 2022;25(1):40-47. doi: 10.1089/jmf.2021.0080.PubMedUsed to support: Randomized controlled trial in 66 men given 100 g of dried plum a day or no dried plum for 12 months: bone density at the total body, spine, hip and ulna did not change in either group. The resorption markers TRAP-5b and CTX fell from baseline only in the dried plum group, and one tibia geometry measure changed within that group.
  10. Ormsbee LT, Akhavan NS, Munoz J, Mullins A, George KS, Dawkins KE, Singar S, Clarke H, Benton S, Ledermann T, Kim JS, Sweeney M, Basiri R, Hickner RC, Zhang Y, Arjmandi BH. Prune Consumption and Bone Health in Older Men: A One-Year Randomized Controlled Trial. Nutrients. 2026;18(12):1854. doi: 10.3390/nu18121854.PubMedUsed to support: Randomized controlled trial in 59 men aged 55 to 80, with all groups taking calcium and vitamin D3: 50 g or 100 g of prunes a day for one year did not change total or lumbar spine bone density beyond the control. Differences in osteoprotegerin and TRAP-5b were described by the authors as exploratory. Groups were small and unbalanced (23, 23 and 13 completers); funded by USDA-NIFA with prunes donated by the California Prune Board.
  11. Treister-Goltzman Y, Peleg R. Effects of Prunes on Bone Density in Humans: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Nutrients. 2026;18(9):1338. doi: 10.3390/nu18091338.PubMedUsed to support: Meta-analysis of 11 papers (747 participants): in postmenopausal women the effect on lumbar spine bone density was borderline and not statistically significant (SMD 1.30, 95% CI -0.03 to 2.63), with very high heterogeneity, and no other bone site or bone turnover marker differed significantly. The authors saw preliminary evidence of a modest benefit, mainly at the spine, and called the research base limited.
  12. Arjmandi BH, Khalil DA, Lucas EA, Georgis A, Stoecker BJ, Hardin C, Payton ME, Wild RA. Dried plums improve indices of bone formation in postmenopausal women. J Womens Health Gend Based Med. 2002;11(1):61-8. doi: 10.1089/152460902753473471.PubMedUsed to support: Randomized 3-month trial in 58 postmenopausal women not on hormone therapy given 100 g of dried plums or 75 g of dried apples a day: only dried plums raised serum IGF-I and bone-specific alkaline phosphatase from baseline, while bone resorption markers did not change with either fruit.
  13. Stacewicz-Sapuntzakis M, Bowen PE, Hussain EA, Damayanti-Wood BI, Farnsworth NR. Chemical composition and potential health effects of prunes: a functional food? Crit Rev Food Sci Nutr. 2001;41(4):251-86. doi: 10.1080/20014091091814.PubMedUsed to support: Review of prune composition: about 6.1 g of dietary fiber per 100 g of prunes, while prune juice is filtered and lacks fiber; sorbitol at about 14.7 g per 100 g of prunes and 6.1 g per 100 g of juice, which the authors proposed explains the laxative action; about 184 mg of phenolic compounds per 100 g, mainly neochlorogenic and chlorogenic acids; and about 745 mg potassium per 100 g.
  14. Simpson AMR, De Souza MJ, Damani J, Rogers C, Williams NI, Weaver C, Ferruzzi MG, Chadwick-Corbin S, Nakatsu CH. Prune supplementation for 12 months alters the gut microbiome in postmenopausal women. Food Funct. 2022;13(23):12316-12329. doi: 10.1039/d2fo02273g.PubMedUsed to support: Analysis of 143 compliant postmenopausal women from a 12-month randomized trial (no prunes, 50 g or 100 g a day): gut microbiome composition differed among prune treatments after 12 months, prunes enriched the family Lachnospiraceae, and some taxa correlated with urinary phenolic metabolites and inflammatory markers. Correlations only.
  15. Smith BJ, Hatter B, Washburn K, Graef-Downard J, Ojo BA, El-Rassi GD, Cichewicz RH, Payton M, Lucas EA. Dried Plum's Polyphenolic Compounds and Carbohydrates Contribute to Its Osteoprotective Effects and Exhibit Prebiotic Activity in Estrogen Deficient C57BL/6 Mice. Nutrients. 2022;14(9):1685. doi: 10.3390/nu14091685.PubMedUsed to support: Animal study in ovariectomized, osteopenic mice: both the polyphenol and the carbohydrate fractions of a dried plum extract affected bone, with the carbohydrate fraction suppressing bone formation and resorption and the polyphenol fraction temporarily lowering formation, and both altered gut bacteria and cecal short-chain fatty acids. Mouse data only.
  16. U.S. Department of Agriculture, Agricultural Research Service. Plums, dried (prunes), uncooked (FDC ID 168162), SR Legacy. USDA FoodData Central. 2026;SR Legacy food record, accessed 2026..SourceUsed to support: Not PubMed-indexed; USDA nutrient database (accessed 2026). Per 100 g of uncooked prunes: 240 kcal, 63.9 g carbohydrate, 38.1 g total sugars, 7.1 g total dietary fiber, 732 mg potassium and 59.5 mcg vitamin K (phylloquinone).