
What is Saccharomyces Boulardii?
Saccharomyces boulardii is a probiotic yeast commonly used in digestive and gut health supplements. Unlike bacterial probiotics, it is a beneficial yeast that survives stomach acid well and is often used in capsules for convenient daily use.
It is commonly sold as:
- Fine powder
- Freeze-dried probiotic powder
- High-CFU probiotic blends
Because Saccharomyces boulardii powder is lightweight and fluffy, capsule sizing depends heavily on the powder density and desired dosage.

Best Capsule Sizes for Saccharomyces Boulardii
| Capsule Size | Approx Capacity | Best For |
|---|---|---|
| Size 3 | 150β250mg | Small daily doses |
| Size 2 | 250β400mg | Lower strength probiotic blends |
| Size 1 | 350β500mg | Medium probiotic servings |
| Size 0 | 500β700mg | Most common choice |
| Size 00 | 700β950mg | High-strength formulations |
| Size 000 | 900β1400mg | Bulk or professional use |
Recommended Capsule Size

For most Saccharomyces boulardii supplements:
Size 0 Capsules
Usually the best balance between:
- Easy swallowing
- Good probiotic capacity
- Popular consumer size
- Efficient manual filling
Typical fill:
- Around 500mgβ700mg depending on density.

Size 00 Capsules
Ideal for:
- High-CFU probiotic formulas
- Combined probiotic blends
- Fewer capsules per serving
Gelatin vs Vegetarian Capsules

Gelatin Capsules
- Smooth and easy to fill
- Cost-effective
- Popular for commercial encapsulation
Vegetarian (HPMC) Capsules
- Plant-based
- Suitable for vegan supplements
- Better for moisture-sensitive ingredients
Many probiotic manufacturers prefer HPMC capsules because they can offer improved stability in humid environments.
Tips for Filling Saccharomyces Boulardii Capsules

- Use a precision scale for accurate dosing
- Avoid excessive moisture exposure
- Store capsules in airtight containers
- Consider desiccant packs for long-term storage
- Use capsule filling machines for consistency
Storage Recommendations

Saccharomyces boulardii supplements are typically stored:
- In cool dry conditions
- Away from direct sunlight
- In sealed containers to maintain probiotic viability
Some high-potency formulations may recommend refrigeration after opening.

FAQ
What is the most common capsule size for Saccharomyces Boulardii?
Size 0 capsules are the most commonly used because they balance comfort and capacity well.
Can Saccharomyces Boulardii fit into size 00 capsules?
Yes. Size 00 capsules are commonly used for higher-dose probiotic formulations.
Are vegetarian capsules better for probiotics?
Many manufacturers prefer HPMC capsules because they handle moisture better and suit vegan consumers.
How much Saccharomyces Boulardii fits in a capsule?
It depends on powder density, but:
- Size 0: roughly 500β700mg
- Size 00: roughly 700β950mg
Which capsule size is easiest to swallow?
Size 1 and Size 0 capsules are usually considered easiest for daily use.

