Senna Tablet Side Effects in Pakistan

A complete guide to the side effects of Senna Tablet. From common effects to serious warnings — everything you need to know is on this page.

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-07-09

Side Effects

Quick Answer

Common side effects of Senna Tablet include abdominal cramps and diarrhoea. Serious effects such as electrolyte imbalance with prolonged use or severe abdominal pain suggesting bowel obstruction require immediate medical attention. Most patients tolerate Senna Tablet well at the correct short-term dose. Contact your doctor if any side effect persists or worsens.

Side Effects at a Glance

Common

Abdominal cramps
Diarrhoea
Nausea

Serious — See a Doctor

Electrolyte imbalance (potassium loss) with prolonged use
Laxative dependence with long-term misuse
Severe abdominal pain suggesting bowel obstruction (stop immediately)

When to See a Doctor Immediately

If constipation persists despite 3 days of treatment
If you experience severe abdominal pain or bloating (possible bowel obstruction)
If stools become very watery and do not improve

Senna Tablet Side Effects (Nuksanat)

Senna Tablet (Sennosides A and B) is generally safe when taken at the correct dose for a short period. However, like all medicines, it can cause side effects in some patients.

Common Side Effects (Aam Nuksanat)

Abdominal cramps
Diarrhoea
Nausea

These side effects are usually mild and temporary. If they continue, inform your doctor.

Serious Side Effects (Sanjeedah Nuksanat)

Electrolyte imbalance (potassium loss) with prolonged use — see a doctor immediately
Laxative dependence with long-term misuse — see a doctor immediately
Severe abdominal pain suggesting bowel obstruction — stop immediately and see a doctor

When to See a Doctor (Kab Doctor Se Milna Zaroori Hai)

If constipation persists despite 3 days of treatment
If you experience severe abdominal pain or bloating (possible bowel obstruction)
If stools become very watery and do not improve

Warnings and Precautions (Ihtiyat)

Do not use for more than 7–10 days without medical advice
Not for bowel obstruction, appendicitis, or undiagnosed severe abdominal pain
Urine may turn reddish-brown while taking senna — this is harmless

Side Effects Summary Table

Type	Side Effect	Action
Common	Abdominal cramps	Monitor / inform doctor
Common	Diarrhoea	Monitor / inform doctor
Common	Nausea	Take with water; inform doctor if persistent
Serious	Electrolyte imbalance	See a doctor immediately
Serious	Severe abdominal pain	Stop immediately; see a doctor

Reporting Side Effects

If you notice any unexpected side effect, report it on the DRAP pharmacovigilance portal: https://www.dra.gov.pk/pharmacovigilance

The information in this guide is for educational purposes only. If you notice any side effect, contact your doctor or pharmacist.

Frequently Asked Questions

What are the most common side effects of Senna Tablet?

The most commonly reported side effects of Senna Tablet are abdominal cramps, diarrhoea, and nausea. These are usually mild and temporary at the correct dose. Inform your doctor if they persist.

Can Senna Tablet cause allergic reactions?

Yes, like all medicines, Senna Tablet can rarely cause allergic reactions. Signs include rash, itching, swelling, or difficulty breathing. Stop use and seek medical help immediately if this happens.

Is Senna Tablet safe to take for a long time?

No. Long-term use of Senna Tablet is not recommended. It can cause laxative dependence and electrolyte imbalance (particularly low potassium), which can have serious health consequences. Always use for the shortest effective period.

What should I do if I experience side effects from Senna Tablet?

For mild side effects such as cramps or diarrhoea, reduce the dose or discuss with your pharmacist. For serious effects such as severe abdominal pain, stop the tablet and contact your doctor immediately.

Does Senna Tablet affect the liver or kidneys?

Prolonged use of Senna Tablet can cause electrolyte imbalance (low potassium) which may place strain on kidneys and the heart. Always use for the shortest necessary duration and inform your doctor of any concerns.

Brand alternatives, same-class options, and other medicines used for the same conditions as Senna Tablet.

Other laxatives

Sibling medicines in the Laxatives class.

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Used for the same conditions

Other medicines commonly used for constipation and overlapping conditions.

Constipation hub →

Sources

DRAP Registered Products Database — Drug Regulatory Authority of Pakistan
WHO Model List of Essential Medicines, 23rd ed. (2023) — World Health Organization
British National Formulary (BNF) — BMJ Group & Pharmaceutical Press

Medical disclaimer

This page is for educational use only and does not replace professional medical advice. Always confirm diagnosis, dose, and interactions with a qualified doctor or pharmacist before starting or changing any medicine.