Capsules
Capsules (medicine)
Capsules (/ˈkæpsjuːlz/) are a type of dosage form used in pharmacy to enclose medicines or other active ingredients. The term "capsule" is derived from the Latin capsula, meaning "small box".
History
The use of capsules can be traced back to the 19th century. The first patent for a medicinal capsule was granted to James Murdock in 1847.
Types of Capsules
There are two main types of capsules used in medicine: hard-shell capsules and soft-shell capsules.
- Hard-shell capsules: These are made of two parts, a cap and a body. The medicine is filled into these two parts, which are then joined together.
- Soft-shell capsules: These are a single piece and are usually used for oils and for active ingredients that are dissolved or suspended in oil.
Production
Capsules are produced by the process of dip molding. In this process, a mold pin is dipped into a solution of gelatin. The gelatin dries and forms a thin layer around the mold pin, which is then removed to form the capsule.
Usage
Capsules are used to deliver a variety of medicines, including antibiotics, painkillers, and vitamins. They are preferred for their ease of swallowing, and the ability to mask the taste and odor of unpleasant drugs.
Related Terms
External links
- Medical encyclopedia article on Capsules
- Wikipedia's article - Capsules
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