On this page · 9 sections

Dr Caldwell Laxative

Generic name: senna

Brand names: Ex-Lax Chocolated, Ex-Lax Maximum Strength, Fletchers Castoria, Geri-kot, Innerclean, Senna Lax, Senna-Time, Senokot, Senokot Extra Strength, Senokot Laxative Gummies Blue Pomegranate, Senokot Laxative Gummies Mixed Berries, Senokot Tea, SenoSol, SenoSol-X, Black Draught, Dr Caldwell Laxative

Last updated November 2, 2026 0 views
Share

What is senna?

Senna is an herb also known as Alexandrian Senna, Casse, Fan Xie Ye, Indian Senna, Khatoum Senna, Sen, Sena Alejandrina, Sennae Folium, Sennae Fructus, Sennosides, Tinnevelly Senna, True Senna, and other names.

Senna is likely effective in alternative medicine for helping treat occasional constipation in adults and children who are at least 2 years old.

Senna has been used in alternative medicine as a possibly effective aid for emptying the bowel before a colonoscopy.

Other uses that have not been proven with research include weight loss, irritable bowel syndrome, hemorrhoids, and other conditions.

It is not certain whether senna is effective in treating any medical condition. The FDA has not approved the medicinal use of this product. Senna should not be used instead of medication prescribed by your doctor.

Senna is often sold as an herbal supplement. There are no regulated manufacturing standards for many herbal products, and some supplements on the market have been found to be contaminated with toxic metals or other drugs. Herbal/health supplements should be bought from a reliable source to reduce the risk of contamination.

Senna may also be used for purposes not listed in this product guide.

This section was rewritten for readability and reviewed for meaning.

How should I take senna?

When thinking about using senna, talk to your doctor. You might also want to consult a practitioner who specializes in herbal or health supplements.

If you decide to use senna, follow the instructions on the package or those given by your doctor, pharmacist, or other healthcare provider. Do not use more of this product than what is recommended on the label.

Swallow the tablet whole with a full glass of water; do not crush, chew, or break it.

You must chew the chewable tablet before swallowing it.

Use the measuring device that comes with the liquid product (not a kitchen spoon) to measure your dose.

Taking more than your recommended dose will not make this product work better and may lead to serious side effects.

Senna should cause a bowel movement within 6 to 12 hours after you take it.

Do not use different forms of senna (tablets, liquids, and others) at the same time, as this could lead to an overdose.

Contact your healthcare provider if your constipation does not get better after 1 week of using senna, or if your constipation worsens. Do not take senna for more than 1 week unless directed by your healthcare provider.

Store at room temperature, away from moisture, heat, and light.

This section was rewritten for readability and reviewed for meaning.

Warnings

Follow all instructions on the product label and package. Inform each of your healthcare providers about all your medical conditions, allergies, and all medications you are taking.

This section was rewritten for readability and reviewed for meaning.

Before taking this medicine

You should not use senna if you are allergic to it, or if you have:

  • diarrhea;
  • hemorrhoids;
  • stomach pain;
  • a blockage in your intestines;
  • inflammatory bowel disease; or
  • appendicitis.

Ask a doctor, pharmacist, or other healthcare provider if it is safe for you to use this product if you have ever had:

  • an electrolyte imbalance (such as low levels of potassium in your blood);
  • any change in bowel habits that has lasted longer than 2 weeks;
  • long-term bowel problems;
  • stomach pain, nausea, or vomiting; or
  • if you are taking mineral oil.

Ask a doctor before using this product if you are pregnant or breastfeeding.

Do not give any herbal/health supplement to a child without medical advice.

This section was rewritten for readability and reviewed for meaning.

Senna side effects

Get emergency medical help if you notice signs of an allergic reaction: hives, trouble breathing, swelling of your face, lips, tongue, or throat.

Senna can cause serious side effects. Stop using senna and call your doctor right away if you experience:

  • rectal bleeding;
  • no bowel movement within 12 hours after using senna; or
  • low blood potassium, which can include leg cramps, constipation, irregular heartbeats, fluttering in your chest, increased thirst or urination, numbness or tingling, muscle weakness, or feeling limp.

Common side effects of Dr Caldwell Laxative may include:

  • stomach pain, discomfort, or cramps;
  • diarrhea, or a strong urge to have a bowel movement;
  • nausea, gas; or
  • change in the color of your urine.

This is not a complete list of side effects, and others may happen. Call your doctor for medical advice about side effects. You can report side effects to the FDA at 1-800-FDA-1088.

This section was rewritten for readability and reviewed for meaning.

What happens if I miss a dose?

If you miss a dose, just skip it and take your next dose at the usual time.

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include electrolyte imbalance (muscle spasms, changes in the shape of your fingers), muscle weakness, heart problems, liver damage, and other side effects.

Avoid taking this product within 2 hours before or after you take other medicines. Senna can make it harder for your body to absorb certain medicines you take by mouth.

Avoid using senna together with other herbal/health supplements that can lower potassium levels. This includes horsetail, licorice, aloe, buckthorn, gossypol, rhubarb, and other stimulant laxative herbs.

Do not use other laxatives while taking senna unless your doctor has told you to.

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect senna?

Do not take senna without medical advice if you are using the following medications:

  • warfarin (Coumadin, Jantoven); or
  • a diuretic (water pill).

This list is not complete. Other drugs may affect senna, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

This section was rewritten for readability and reviewed for meaning.

Common questions about Dr Caldwell Laxative

Which drugs cause opioid-induced constipation?
Any drug that is classified as an "opioid" can cause constipation, which can be a serious side effect if not addressed. Examples of commonly prescribed opioids that may cause this side effect include morphine, tramadol, fentanyl, methadone, hydrocodone, codeine and oxycodone. Continue reading

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
General medicine information Consumer-friendly language

Content is provided for education and is not medical advice. See our medical disclaimer.