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Gelatin capsules, informally called gel caps or gelcaps, are composed of gelatin manufactured from the collagen of animal skin or bone. [4] Vegetable capsules, introduced in 1989, [5] are made from cellulose, a structural component in plants. The main ingredient of vegetarian capsules is hydroxypropyl methyl cellulose. In the 21st century ...
A capsule is a gelatinous envelope enclosing the active substance. Capsules can be designed to remain intact for some hours after ingestion in order to delay absorption. They may also contain a mixture of slow and fast release particles to produce rapid and sustained absorption in the same dose.
The process involves the application of heat, pressure and agitation to mix materials together and 'extrude' them through a die. Twin-screw high shear extruders blend materials and simultaneously break up particles. The resulting particles can be blended and compressed into tablets or filled into capsules. [11]
It is used primarily for gel capsules and as stabilizers for vaccines. [26] Non-animal derived alternatives to gelatin include pectin as a gelling agent or cellulose for creating capsules. [27] Lactose is derived from cow's milk and is a frequently used filler or binder in tablets and capsules. [28]
The following is a table of drugs organized by their year of discovery. Naturally occurring chemicals in plants, including alkaloids, have been used since pre-history.In the modern era, plant-based drugs have been isolated, purified and synthesised anew.
Medication is a medicine or a chemical compound used to treat or cure illness. According to Encyclopædia Britannica, medication is "a substance used in treating a disease or relieving pain". [3] As defined by the National Cancer Institute, dosage forms of medication can include tablets, capsules, liquids, creams, and patches.
Effervescent tablets mostly come in capsules constructed for these tablets. They may contain an anti-bacterial coating and are water resistant. The cap contains a little spring-like spiral, which helps keeping the tablets in place during transportation and prevents them from breaking. The cap also contains little balls made out of silica gel. [18]
Microencapsulation can also be used to enclose solids, liquids, or gases inside a micrometric wall made of hard or soft soluble film, in order to reduce dosing frequency and prevent the degradation of pharmaceuticals. [4] In its simplest form, a microcapsule is a small sphere comprising a near-uniform wall enclosing some material. The enclosed ...