This page contains brief details about the drug , it's indication, dosage & administaration, mechanism of action, related brands with strength, warnings and common side effects.

Background and Date of Approval

Bacillus clausii is a probiotic drug developed by the U.S. Food And Drug Administration and initially approved for treating diarrhoea.

Mechanism of Action of undefined

Bacillus clausii works by inhibiting the growth and activity of harmful bacteria and pathogens in the gut. By doing so, they can help control the infection and reduce the severity of diarrhea.

Uses of undefined

Bacillus clausii is used as a treatment for diarrhea, including both acute and chronic diarrhea. It also helps reduce the severity and duration of diarrhea episodes.

undefined Drug administaration and Dosage available

Always take Bacillus clausii exactly as prescribed by your doctor. The chances of stomach upset are less if you take this suspension with food. Oral suspension is prescribed when the patient cannot swallow the tablet form of this medicine. The recommended dose is based on the individual’s body weight. It is important to complete the whole course, even if you start to feel better quickly. 

Warnings, Precautions and Side Effects of undefined


Do not take Bacillus clausii if you are allergic to it or any other ingredients listed in the medicine's information. If you have moderate or severe renal impairment and are taking other medications, consult your physician before using the drug. This tablet is not suitable for children under 12 years of age.


Individuals with severely compromised immune systems, such as those with HIV/AIDS or undergoing immunosuppressive treatments, should use Bacillus clausii with caution and under the guidance of a healthcare provider. Pregnant and breastfeeding women should consult their physician before using this drug or any other dietary supplement. While probiotics are generally considered safe for most pregnant and breastfeeding women, individual conditions can vary from person to person.

Side Effects

The side effects known to occur commonly during the treatment with Bacillus clausii are rash, itching, swelling around lips and eyes, bloating, and flatulence.

Word Of Advice

Diarrhea can lead to dehydration and fluid loss. It's necessary to drink plenty of fluids, such as water, oral rehydration solutions, or clear broths when using Bacillus clausii to address diarrhea. Proper hydration helps replace lost fluids and electrolytes and supports the body's recovery.

Frequently Asked Question


  1. Sanofi, [Revised on Jan 2022], [Accessed on 2nd Sep 2023],
  2. Apurva C Shah et al; Clinical effectiveness of Bacillus clausii and Lactic acid bacillus in acute diarrhea; Indian Journal of Child Health; [Published on 2020]; [Accessed on 2nd Sep 2023];
  3. GlaxoSmithKline, US Food and Drug Administration, [Accessed on 2nd Sep 2023],
  4. Bacillus clausii - the probiotic of choice in treating Diarrhea - Longdom.  [Accessed on 2nd Sep 2023];
  5. KD Tripathi, Essentials of Medical Pharmacology, Drugs for constipation and diarrhea, 7th edition, 2013, 682-683.


The drug information on this page is not a substitute for medical advice; it is meant for educational purposes only. For further details, consult your doctor about your medical condition to know if you are eligible to receive this treatment.