Nothing to digest: what changes with a patch

A tablet starts its day with a swallow. From there it travels through the stomach and gut, where digestion turns what we eat and take into forms the body can use. A patch takes another route entirely. No tablets. No taste. Nothing to digest.

Here is how each route works, and what changes when your routine goes on your skin instead.

Designed to release over time

When you swallow a tablet, it first breaks apart into smaller pieces. Then its contents dissolve into the surrounding fluid. Many tablets and capsules are designed to release their contents in a particular way: straight away, gradually or after a delay. The FDA’s discussion of extended-release and delayed-release medicines shows how much thought goes into that timing.

A patch is designed around timing too. Its actives are built into the adhesive layer that sits against your skin, designed to release steadily across the wear time, not in one hit.

Digestion prepares nutrients for use

Digestive processes turn food into forms the body can use. Enzymes help break down proteins, carbohydrates and fats, and the small intestine takes up much of the resulting material. It is how we get nourishment from every meal. NIDDK explains the sequence from digestion onwards.

Everything you swallow joins that process, alongside your meals. A patch sits outside it. It goes on your skin, so there is nothing to wash down and nothing for your stomach to do.

Each route has its own science

Swallowed products and skin products are studied in different ways, each with its own methods. In medicine research, every measurement is tied to a defined product, dose, method and comparison. The FDA’s 2022 guidance explains how those studies are designed, one research question at a time.

For everyday choices, the simpler question is how a format fits your life.

Where does a patch differ?

A patch is applied to skin instead of being swallowed. Nothing goes through the gut: no tablet to swallow, no aftertaste, no powder to mix, no drink to brew. You put it on, and it stays with you through the day or the night.

One step, steady wear, and nothing to remember until it is time to take it off. Our explanation of how ingredient patches work follows each step of the format.

How to compare formats

Compare formats on what you can see: what is in each one, how much, and how it fits your day. Every person, ingredient and product is different, so a single percentage can never describe every tablet, capsule, gel or patch.

On a 24/sync label, every amount is what goes into each patch, down to the milligram. See our guide to the amounts on a patch label if you are weighing two labels side by side.

Choose the format that fits your day

A practical preference is reason enough. Patches suit people who would rather skip tablets, want a step that travels, or want to see exactly what is in it. It is a choice of format, not a verdict on tablets.

See Science & standards for what goes into every 24/sync patch, and our format guide to compare the everyday experience. If you have a diagnosed digestive condition, speak to a healthcare professional about the right option for you.