Excipient classification and types

Classification and types of Excipient

Word Excipient is derived from a Latin word Excipere means `To except` simply its mean `other than`.
Other than API all other ingredients in a dosage form are excipients.

• Some excipients have numerous functions e.g starch is used as a binder, disintegrant and also as a diluent.

Properties of Excipientd
Excipients should have the following properties

• No Pharmacological effect.
• Cost-effective.
• Meet regulatory requirements.
• Chemically and physiologically stable.
• Commercially available.

Role of Excipients

• Help in the manufacturing of the drug delivery system.
• Enhance product stability e.g antimicrobial preservatives.
• Help in Product identification e.g colourants.
• Protect the dosage form from oxidation.
• Improve the bioavailability of the drug.
• Sweeteners modify the taste of medicine.

         Classification of Excipients

According to Route of Administration

• Excipients for OSD
• Excipients for Parenteral Products
• Excipients for Topical Product.

                  According to Origin

Marine Origin

• Agar
• chitosan

Animal Origin

• Lactose(Dairy industry byproduct)

• Gelatin(Bones and collagen of animals)
• Bee wax
• Stearic acid
• Shellac
• Lanolin
• Organic Chemicals
• Sugars
• Starch
• Cellulose

Inorganic Chemicals

• Calcium carbonate

Synthetic

• PVP

Semisynthetic

• HPC
• HPMC

According to Function

• Diluents
• Disintegrants
• Binders
• Glidents
• Lubricants
• Colourants
• Sweeteners
• Preservatives
• Suspending Agents
• Flavouring Agents
• Film former etc

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