Breakfast table with oats topped with kiwifruit and prunes, halved kiwifruit and guava, and glasses of water

Sembelit (Constipation): Causes, Best Foods, Ubat & When to See a Doctor

Sembelit (constipation) means pooing less often than usual, usually fewer than 3 times a week, or finding it hard to poo because stools are hard and dry. It is very common and is usually caused by not eating enough fibre, not drinking enough, not moving enough, or ignoring the urge to go. Most cases get better with simple changes: adding fibre gradually, drinking more water, staying active and not delaying toilet trips. Research shows that some foods help more than others, with kiwifruit and prunes performing about as well as fibre supplements. If self-care is not enough, a pharmacist can recommend a laxative (ubat sembelit) for short-term use. This guide explains the causes, the foods and habits that help, how laxatives compare, what to do about bloating (perut kembung), and when to see a doctor.

What is sembelit?

Sembelit is the Malay word for constipation. Normal bowel habits vary a lot between people, but according to the NHS, common signs of constipation include:

  • pooing fewer than 3 times a week;
  • finding it hard to poo, or straining;
  • stools that are dry, hard, lumpy, or unusually large or small;
  • feeling that you have not fully emptied your bowels;
  • tummy ache, bloating or feeling sick.

What causes constipation?

The cause is not always clear, but it is often linked to diet and lifestyle. Common reasons include:

  • Not eating enough fibre, for example meals built mostly on white rice, white bread, noodles and meat with few vegetables or fruit.
  • Not drinking enough fluids, which matters even more in Malaysia's heat.
  • Not moving enough, such as long hours sitting at a desk or in traffic.
  • Ignoring the urge to go, for example because the office or public toilet is not convenient.
  • Changes in routine, such as travel, fasting months, shift work or a new diet.
  • Medicines, such as opioid painkillers and some other medicines. Speak to your doctor before stopping any prescribed medicine.
  • Stress, anxiety or depression.
  • Pregnancy and after giving birth, when constipation is especially common.

Rarely, constipation is caused by a medical condition such as diverticular disease or bowel cancer, which is why warning signs (listed below) should be checked. Straining because of constipation can also lead to piles (buasir).

Which foods help constipation?

Eating more fibre is the first step, but some foods have better evidence than others:

  • Kiwifruit. A 2023 systematic review and meta-analysis of foods for constipation found that fruits, kiwifruit in particular, increased the number of bowel movements more than psyllium fibre supplements. In a US trial, eating two green kiwifruits a day for four weeks improved constipation as well as prunes and psyllium did, with the fewest side effects and better bloating scores.
  • Prunes (dried plums). About 100 g of prunes a day improved stool frequency, consistency and straining in the same trial.
  • Wholegrain bread. Rye bread increased stool frequency compared with white bread in the meta-analysis. Wholemeal bread, oats and brown rice are easy swaps for white versions.
  • Psyllium (ispaghula husk). A meta-analysis of fibre supplements found that 66% of people responded to fibre compared with 41% on control treatments, with psyllium among the most effective. Results were better with more than 10 g of fibre a day and after at least 4 weeks. Certain probiotics may also help some people; see our guide to probiotics.
  • Everyday high-fibre foods, such as vegetables (kangkung, bendi, sawi), beans and lentils (dhal, kacang), and fruit eaten with the skin where possible, such as guava (jambu batu), apples and pears.
  • Mineral-rich water. In the meta-analysis, high-mineral water led to a better response than low-mineral water.

Increase fibre slowly. Fibre can cause wind and bloating at first, and the meta-analysis found more flatulence in people taking fibre. Add a little more each week and drink plenty of water as you do. If you rely on processed or convenience meals, our Malaysian food calories list can help you plan simple swaps. Meal replacement shakes vary in fibre; Drann's Chocolate Meal Replacement Shake has 2 g of prebiotic fibre per sachet, which is a small contribution, so most of your fibre should still come from whole foods.

Daily habits that help

  1. Drink more fluids, especially water, through the day.
  2. Move every day. A daily walk or run can help you go more regularly.
  3. Do not delay when you feel the urge to poo.
  4. Try a footstool. Resting your feet on a low stool so your knees are above your hips can make it easier to poo.
  5. Give yourself time at a regular moment each day, for example after breakfast, without rushing.
  6. Be patient. It can take a few weeks before diet and lifestyle changes make a difference.

Ubat sembelit: which laxative?

If diet and lifestyle changes are not enough, speak to a pharmacist about a laxative. The NHS notes that most laxatives work within 3 days and should only be used for a short time. The main types are:

Type Examples How it works 2023 guideline rating
Bulk-forming Psyllium (ispaghula husk) Adds fibre and holds water in the stool Conditional recommendation
Osmotic Polyethylene glycol (PEG), lactulose, magnesium oxide Draws water into the bowel to soften stools Strong for PEG; conditional for lactulose and magnesium oxide
Stimulant Senna, bisacodyl, sodium picosulfate Makes the bowel muscles push stools along Strong for sodium picosulfate; conditional for senna
Prescription medicines Prucalopride, linaclotide and others Used for chronic constipation when other options fail Strong for several, prescribed by a doctor

The ratings come from the 2023 joint guideline of the American Gastroenterological Association and the American College of Gastroenterology on medicines for chronic idiopathic constipation in adults. Tell the pharmacist if you are pregnant or breastfeeding, have kidney problems, or take other medicines, and do not use laxatives regularly without medical advice. Be cautious with "detox" or "slimming" teas that act as laxatives; our guide to slimming products in Malaysia explains the risks.

Constipation and bloating (perut kembung)

Bloating often comes with constipation, because stools and gas build up in the bowel. A few practical points:

  • Treating the constipation usually eases the bloating.
  • Fibre can cause extra wind at first, so increase it gradually.
  • In the kiwifruit trial, people eating kiwifruit reported a significant improvement in bloating.
  • Eat slowly and cut down on fizzy drinks if you notice they make you feel bloated.
  • If you are regularly bloated, see a doctor to check for other causes. Bloating with upper tummy pain, burping or heartburn may be gastrik (indigestion).

Our guide to digestion and digestive enzymes explains more about how food is broken down.

When to see a doctor

According to the NHS, see a doctor if you:

  • are constipated and it is not getting better with treatment;
  • are regularly constipated or regularly bloated;
  • have blood in your poo;
  • have lost weight without trying;
  • are constipated and feel tired all the time;
  • are taking a medicine that may be causing constipation, such as opioid painkillers;
  • notice a sudden change in your bowel habits;
  • have tummy pain.

For babies and young children with constipation, speak to a doctor or pharmacist before giving any remedy or laxative.

Frequently asked questions (FAQ)

What is sembelit in English?

Sembelit is the Malay word for constipation: pooing less often than usual, usually fewer than 3 times a week, or finding it hard to poo because stools are hard, dry or difficult to pass.

How often should you poo?

Normal bowel habits vary from person to person. Going fewer than 3 times a week, or straining and passing hard, lumpy stools, is a common sign of constipation, according to the NHS.

What fruit helps constipation?

Kiwifruit and prunes have the best evidence. A 2023 meta-analysis found that fruits, kiwifruit in particular, increased bowel movements more than psyllium fibre, and in a trial two kiwifruits a day, about 100 g of prunes a day and psyllium all improved constipation, with kiwifruit causing the fewest side effects.

What is the best medicine for constipation (ubat sembelit)?

Start with fibre, fluids and exercise. If these do not help, a pharmacist can suggest a laxative. A 2023 American gastroenterology guideline strongly recommends polyethylene glycol and sodium picosulfate for chronic constipation, and conditionally recommends fibre, lactulose, senna and magnesium oxide. Laxatives are meant for short-term use unless a doctor advises otherwise.

How can I relieve constipation quickly?

Drink more water, eat high-fibre foods such as kiwifruit or prunes, go for a walk, and do not delay when you feel the urge to go. Resting your feet on a low stool on the toilet can make it easier. If these do not work, ask a pharmacist about a laxative; most work within 3 days.

Is constipation common in pregnancy?

Yes. Constipation is common during pregnancy and after giving birth. Simple diet and lifestyle changes are safe to try in pregnancy, but check with your doctor or pharmacist before taking any laxative.

When should I see a doctor about constipation?

See a doctor if constipation does not improve with treatment, keeps coming back, or comes with blood in your poo, weight loss without trying, tummy pain, regular bloating, constant tiredness, or a sudden change in your bowel habits.

Disclaimer

This article is for general information only and is not a substitute for advice, diagnosis or treatment from a doctor or pharmacist. Health supplements are not intended to diagnose, treat, cure or prevent any disease.

References

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