Capsules
The most familiar format, with room for multi-strain blends. Look at the shell material and whether the bottle or blister keeps moisture out.
Probiotic types
Types of probiotic supplements: capsules, powders, gummies and drops
Probiotics come in several formats, and each one handles live cultures a little differently. This guide compares the main types of probiotic supplements sold in the UK, from capsules and powders to gummies, drops and chewables, so you can see which fits your routine.
- Four detailed format guides
- A side-by-side comparison table
- Chewable tablets covered on this page
The main types of probiotic supplement
Four formats have their own detailed pages. Chewable tablets are covered further down this page.
Powders and sachets
Stirred into a cool drink or food, and often combined with prebiotic fibres. Single-serve sachets protect each dose until you open it.
Gummies
A sweet, chewable format, usually made with heat-tolerant spore-forming strains such as Bacillus coagulans. Check the sugar content and the gelling agent.
Liquids and drops
Usually cultures suspended in oil, measured with a dropper and added to food or drink. Many need the fridge after opening.
Capsules vs powders vs gummies: how the types compare
This is a general guide. Counts are described in relative terms because they vary widely between products, so always check the label of the one you are considering.
| Type | Convenience | Typical CFU range | Storage | Who it suits |
|---|---|---|---|---|
| Capsules | Quick to take with water and easy to carry | Moderate to high | Cool, dry place; some need the fridge | Adults who are happy to swallow capsules |
| Powders and sachets | Need mixing into a cool drink or food | Often the highest | Sachets protect each dose; tubs need a tight lid | People who dislike capsules or want fibre in the same serving |
| Gummies | Chewed, with no water needed | Lower to moderate | Cool, dry place away from heat | People who prefer a sweet format and accept sugar or sweeteners |
| Liquid drops | Measured by dropper into food or drink | Lower to moderate | Often refrigerated after opening | People who want a small serving that mixes easily into food |
| Chewable tablets | Chewed, with no water needed | Moderate | Foil blisters or desiccant bottles | People who would rather not swallow capsules |
Chewables
Chewable probiotic tablets
Chewable tablets suit people who would rather not swallow capsules, and they need no water, which makes them easy to take away from home. They have a firmer texture than gummies and are often fruit flavoured.
Strains and stability
Tablets are made by compressing a powder blend, which creates heat and pressure that many cultures do not tolerate well. Makers therefore tend to use hardier strains such as Bifidobacterium animalis subsp. lactis or spore-formers like Bacillus coagulans, and keep the blend dry. The label should still state the CFU count and the date it applies to.
Sweeteners and packaging
Sugar-free chewables often use polyols such as xylitol or sorbitol, which also appear in some probiotic gummies. Products with high levels of polyols carry a warning that excessive consumption may have a laxative effect, so read the label. Chewables also absorb moisture easily, which is why foil blisters and bottles with a desiccant are common.
What to check on a chewable
- Full strain names, including the strain code
- A CFU count stated until the best-before date
- The sweetener used, whether sugar or polyols
- Gelatine-free or vegan status if you need it
- Age guidance if you are buying for a child
If you are buying for a child, speak to a pharmacist or GP first.
Which type of probiotic is right for you?
The right type is the one you will take as the label directs, stored in a way that keeps the cultures alive. Probiotic Supplements UK suggests working through the points below in order, then reading the detailed page for any format you shortlist.
Start with your routine
Think about when and where you will take it. Capsules are quick if you are happy to swallow them, while powders, drops and chewables suit people who are not. If you travel or keep supplements at work, a format that does not need the fridge may be easier to live with.
Check that the strains suit the format
Not every strain survives every format. Gummies and chewables usually rely on spore-formers or hardier species, while most lactobacilli and bifidobacteria appear in capsules, powders and drops. Our guide to probiotic strains explains what the names on the label mean.
Look at storage and dietary needs
Check whether the product needs refrigerating and whether the packaging protects against moisture. Then look at the base, including vegan or vegetarian capsule shells, gelatine or pectin in gummies, and any added sugar, polyols or prebiotic fibres. Our probiotic quality checklist and the step-by-step guide on how to choose a probiotic supplement cover these checks in more detail.
FAQs
Probiotic types: common questions
Which type of probiotic supplement has the highest CFU?
Powders and sachets often carry the highest counts, because a serving can hold more material than a capsule. Capsules come next, while gummies, drops and chewables usually carry lower counts. A higher number is not automatically better, so check the strains and the date the count applies to.
Do gummies contain the same strains as capsules?
Usually not. Gummies are made with heat and moisture, so they tend to use spore-forming strains such as Bacillus coagulans, while capsules more often contain lactobacilli and bifidobacteria. Compare the full strain names on each label.
Which probiotic types need to be kept in the fridge?
It depends on the product rather than the format. Liquid drops and some capsules ask to be refrigerated, often after opening, while many sachets, gummies and chewables are designed to be kept somewhere cool and dry. Always follow the storage instructions on the label.
Which type is suitable for children?
Drops, powders, gummies and chewables are the formats most often made for children, and the label should give age guidance. Speak to a pharmacist or GP before giving any probiotic to a baby or child.
Get a plain-English answer about any probiotic type
Tell us which formats you are weighing up and what matters to you, such as storage or dietary needs. We reply by email with general information and never recommend specific brands.