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Dosage form

A dosage form is the physical form of a dose of medication, such as a capsule or injection. The route of administration is dependent on the dosage form of a given drug.

Additional recommended knowledge

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Various dosage forms may exist for the same compound, since different medical conditions may warrant different routes of administration. For example, persistent vomiting may make it difficult to use an oral dosage form; in this case, it may be advisable to use either an injection or a suppository. Also, specific dosage forms may be warranted for certain medications, since there may be problems with stability, e.g. insulin cannot be given orally since it is digested by the gut.

Examples

Inhaled dosage forms

Aerosol
Gas
Inhaler & Metered dose inhaler
Solution for nebulizer

Ophthalmic dosage forms

Eye drop (solution or suspension)
Ophthalmic gel
Ophthalmic ointment

Oral dosage forms

Capsule
Powder
Solution
Suspension
Tablet
Buccal or sublingual tablet

Otic dosage forms

Ear drop (solution or suspension)

Parenteral dosage forms

Solution or suspension for injection

Rectal dosage forms

Topical dosage forms

Vaginal dosage forms

Douche
Intrauterine device
Pessary (vaginal suppository)
Vaginal ring
Vaginal tablet