Capsules, Tablets & Soft Chews: How Delivery Forms Differ
The same active ingredients can be packaged as a hard capsule, a compressed tablet, or a soft dissolvable chew. The choice isn't arbitrary — each format trades off differently on stability, absorption path, and manufacturing cost.
Capsules
A capsule is a shell — usually gelatin or a plant-based (often HPMC or pullulan) alternative for vegetarian/vegan formulations — filled with powder, granules, or sometimes liquid. Capsules are relatively fast and inexpensive to manufacture, mask taste and smell well (useful for bitter botanical extracts), and the shell itself dissolves in the stomach fairly quickly. Two-piece capsules are the most common format for herbal and multi-ingredient blends, partly because they accommodate powder mixes easily.
Tablets
A tablet is powder compressed under pressure into a solid form, often with a binder to hold it together and sometimes a coating. Tablets can pack ingredients more densely than capsules of a similar size, and they tend to have a longer shelf life since there's no shell to degrade. The tradeoff is that compression and binders can make a tablet slower to break down, and some people find larger tablets harder to swallow than a similarly-sized capsule.
Soft, dissolvable chews and tablets
Formats designed to dissolve in the mouth rather than be swallowed whole — soft chews, lozenges, and dissolvable tablets — work differently from both of the above. Because the ingredient contacts the mouth directly rather than going straight to the stomach, this format is common for products meant to act locally (oral and dental-health formulas, for example) as well as for anyone who has difficulty swallowing pills. The tradeoff is usually a shorter shelf life and more careful formulation to get taste and texture right, since — unlike a capsule — there's no shell hiding the ingredients' natural flavor.
Does the format change what's inside?
Not inherently. The same active ingredient can appear across all three formats — what changes is the delivery mechanism, not necessarily the ingredient itself. That said, formulators do sometimes adjust an ingredient's form (a different salt or extract standardization, for instance) to suit a particular delivery method. The Supplement Facts panel on the product's own label is always the accurate source for exactly what's included and how much, regardless of format — see our guide on how to read a Supplement Facts label for more on that.