ingestible · for constipation
Prunes or Prune Juice
Reviewed by the Nimbera editorial team · Last updated May 2026
How to use
Eat 3-5 prunes or drink 4-8oz prune juice in the morning. Allow 6-12 hours for effect. Start low if you are not used to dietary fiber.
How it works
Prunes contain sorbitol (a natural osmotic laxative that draws water into the colon), fiber, and phenolic compounds that stimulate gut motility. Multiple RCTs show prunes outperform psyllium for mild-to-moderate constipation.
Where to buy
Grocery stores, dried fruit aisle. Sunsweet is widely available. Prune juice in the juice aisle.
Typical cost: $4-8
Safety notes
Can cause gas and cramping in large amounts. Sorbitol has a dose-dependent effect - more is not better.
Drug & supplement interactions
- Always tell your doctor or pharmacist about any supplements you take.
- Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
- Herbal remedies can affect how the body absorbs or metabolises drugs.
- Check drugs.com interactions checker before starting.
Clinical source
Alimentary Pharmacology & Therapeutics (RCT); HealthlineThis information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.