Updated on - 03 Feb 2026
Prune juice is usually used as a natural remedy for constipation and many drink it to improve digestion. It is made from dried plums, which are known as prunes. Prune juice is rich in essential nutrients and has a sweet taste. However, just like any drink or food, consuming excessive amounts may lead to side effects.
This blog talks about the side effects of prune juice, enabling you to make an informed choice for your health.
What are the side effects of prune juice?
Here are some common side effects of drinking prune juice:
1. Diarrhoea
The high fibre content combined with sorbitol in prune juice can result in loose stools or diarrhoea, especially if you are not used to high-fibre diets. This is because of the laxative properties in the juice, which may relieve constipation.
2. Weight gain
Though often praised and used for digestive health, prune juice has natural sugars and calories that can add up quickly. Overconsumption without balancing your diet may contribute to weight gain.
3. Blood sugar spikes
For individuals with chronic conditions like diabetes or insulin resistance, drinking prune juice may cause sudden blood sugar spikes.
4. Pregnancy-related complications
Although prunes and prune juice help relieve pregnancy-related constipation, excessive intake can trigger diarrhoea, dehydration and abdominal pain. To avoid side effects of prunes during pregnancy, expectant mothers should consume them in moderation and consult their doctor for personalised advice.
Nutritional value of prune juice
Prune juice contains high levels of natural fibre and sugars. It also has minerals and vitamins that are essential for good health. Here are some primary nutrients:
- Vitamin A: It helps in maintaining vision and healthy skin.
- Vitamin B6: Supports brain function.
- Fibre: This nutrient can easily improve digestion.
- Potassium: The nutrient helps maintain a normal fluid balance and also supports heart health.
- Iron: It’s important for healthy blood.
Digestive issues caused by excess prune juice
The natural fibre and sorbitol (a type of sugar alcohol) in the prune juice can help soften the stools and make the bowel movements much easier. However, the same ingredients might also lead to digestive issues when consumed in large quantities. Here are some of the digestive problems it can cause:
1. Bloating and gas
Fibre is often good for digestion; however, too much can lead to gas and bloating. Many individuals feel discomfort or fullness in the stomach after drinking over one glass of the juice each day.
2. Stomach cramps
Prune juice carries a strong laxative effect that can lead to stomach cramps in people. The discomfort can last for some hours, depending on how much you have consumed.
3. Dehydration
Due to diarrhoea, the body loses water instantly. This might lead to dehydration, particularly in older adults and children. Symptoms include dizziness, tiredness or dry mouth.
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Allergic reactions and sensitivities
Although prune juice is generally safe, some individuals may be allergic or sensitive to prunes or the preservatives used in some packaged juices. Here are some of the possible allergic symptoms:
- Stomach discomfort
- Sneezing or watery eyes
- Swelling of the face or lips
- Skin rashes
- Itching around the mouth
If you notice any of these signs after consuming prune juice, stop drinking it and monitor whether the symptoms improve. Some individuals might react to the natural sugars or high fibre content instead of the fruit itself.
Impact of prune juice on blood sugar levels
Prune juice contains natural sugars that can cause a sudden increase in blood sugar levels. Since juices are known to be more concentrated and don’t have much insoluble fibre, the sugar enters the bloodstream more quickly than it does when you consume whole fruits. This might be a concern for the following:
- For older adults: Older people might benefit from prune juice, but it’s important to start with a smaller amount to prevent digestive issues.
- For children: Prune juice should not be given in large amounts. They should only consume a small amount. Too much consumption may lead to dehydration and diarrhoea.
- For adults: One small glass (120 to 240 ml) each day is usually enough to relieve constipation. Drinking too much can increase the chances of stomach discomfort or diarrhoea.
Who should avoid prune juice?
Prune juice may not be a good choice for everyone. Some individuals may need to avoid it or consult a doctor before incorporating it into their diet:
- Individuals with diabetes: The juice has high levels of natural sugar and it can instantly increase blood sugar levels.
- People with digestive problems: If you have IBS (Irritable Bowel Syndrome), IBD (Inflammatory Bowel Disease) or chronic diarrhoea, prune juice might worsen the symptoms.
- People on a low-fibre diet: Some medical conditions require low fibre intake. In such cases, prune juice may not be a good option.
- Babies under six months: Infants should not be given prune juice unless advised by the paediatrician.
- Individuals with allergies: Anyone allergic to preservatives in packaged juices should avoid prune juice.
Conclusion
Prune juice can be a useful and natural remedy for constipation. Additionally, the juice provides many nutrients that support overall health. However, it can also have side effects when consumed in excessive amounts. Too much prune juice can lead to stomach cramps, gas, bloating and even diarrhoea. It might also affect the blood sugar levels and cause mild allergic reactions in some people. Thus, it is best to drink the juice in moderation and increase gradually if required.
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FAQs
1. How does prune juice help with constipation?
Prune juice contains natural fibre and sorbitol, which help soften stools and make bowel movements easier.
2. What is the best time to drink prune juice for better digestion?
Many people find it helpful to drink prune juice in the morning or before bedtime, as it gives the body time to process the nutrients and support digestion.
3. What should I do if prune juice causes stomach discomfort?
If you experience bloating, cramps or diarrhoea, you can reduce the amount or take a break for a day or two until your stomach feels normal.
4. How can I include prune juice in the diet safely?
Begin by consuming a small amount, like half a glass, and then gradually increase if needed. Check how your body responds before drinking more.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis or treatment. Please consult a certified medical and/or nutrition professional for any questions. Relying on any information provided in this blog is solely at your own risk, and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.