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Saccharomyces Boulardii vs Ashwagandha (KSM-66) — Which Should You Take?

Saccharomyces Boulardii

herbs

Typically £8–£25/month

Ashwagandha (KSM-66)

adaptogens

Typically £8–£25/month
Feature
Saccharomyces Boulardii
Ashwagandha (KSM-66)
Typical Dosage
250-500 mg (5-10 billion CFU) daily
300-600mg daily (KSM-66 extract)
Best Form
Capsule
KSM-66
Key Benefits
5 listed
5 listed
Evidence Rating
★★★★
★★★★
Best Time
With or between meals; separate from antibiotics by 2+ hours
Evening for sleep, or split morning/evening for stress
Upper Limit
1000 mg (20 billion CFU) daily in divided doses
1,200mg daily
Side Effects
2 noted
4 noted

Saccharomyces Boulardii Benefits

Reduces antibiotic-associated diarrhoea and Clostridium difficile infection risk
Supports intestinal barrier function and reduces intestinal permeability
Enhances immune response through increased IgA production in the gut
Alleviates symptoms of traveller's diarrhoea and acute infectious gastroenteritis
Promotes beneficial microbial balance and inhibits pathogenic bacteria adhesion

Ashwagandha (KSM-66) Benefits

Reduces cortisol and perceived stress
Improves sleep quality
May increase testosterone in men
Anxiety reduction
Physical performance enhancement

Saccharomyces Boulardii Side Effects

Mild gastrointestinal disturbance (bloating, constipation) during initial use
Rare fungal infections in severely immunocompromised individuals

Ashwagandha (KSM-66) Side Effects

Drowsiness (dose-dependent)
May worsen thyroid conditions (can increase thyroid hormones)
Mild digestive upset in some people
Not recommended during pregnancy

Can You Take Saccharomyces Boulardii and Ashwagandha (KSM-66) Together?

In most cases, Saccharomyces Boulardii and Ashwagandha (KSM-66) can be taken together safely. However, always check the interactions section of each supplement and consult a healthcare professional if you take medication or have existing health conditions.

Saccharomyces Boulardii: Significantly reduced efficacy if taken within 2 hours of antibiotics

Saccharomyces Boulardii: May interact with antifungal medications (fluconazole, itraconazole)

Ashwagandha (KSM-66): Thyroid medications — may increase thyroid hormone levels

Ashwagandha (KSM-66): Sedatives — additive drowsiness

Which Should You Choose?

Choose Saccharomyces Boulardii if your primary goal is: reduces antibiotic-associated diarrhoea and clostridium difficile infection risk. Choose Ashwagandha (KSM-66) if your primary goal is: reduces cortisol and perceived stress.

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Frequently Asked Questions

Is Saccharomyces Boulardii better than Ashwagandha (KSM-66)?

It depends on your goals. Saccharomyces Boulardii and Ashwagandha (KSM-66) serve different purposes and are often taken together.

Can I take Saccharomyces Boulardii and Ashwagandha (KSM-66) together?

In most cases, yes. Saccharomyces Boulardii and Ashwagandha (KSM-66) can be taken together safely. However, always check for specific interactions and consult a healthcare professional if you take medication.

What is the best time to take Saccharomyces Boulardii?

With or between meals; separate from antibiotics by 2+ hours

What is the best time to take Ashwagandha (KSM-66)?

Evening for sleep, or split morning/evening for stress

What are the side effects of Saccharomyces Boulardii?

Mild gastrointestinal disturbance (bloating, constipation) during initial use. Rare fungal infections in severely immunocompromised individuals.

What are the side effects of Ashwagandha (KSM-66)?

Drowsiness (dose-dependent). May worsen thyroid conditions (can increase thyroid hormones). Mild digestive upset in some people. Not recommended during pregnancy.

How We Compare Supplements

This comparison is based on published clinical research, peer-reviewed studies from PubMed, and established nutritional science. We evaluate dosages based on clinically-effective amounts, not manufacturer recommendations. Benefits listed have at least moderate evidence from human studies. When evidence is limited or conflicting, we note this.

Disclaimer: This comparison is for educational purposes only and is not medical advice. Always consult a qualified healthcare professional before starting any supplement, especially if you take medication or have existing health conditions.

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