Page 24 - Pharmacology Mnemonics and Short Notes

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Miscellaneous routes

1-Topical administration
Is useful in the treatment of patients with local conditions, there is
usually little systemic absorption. Drugs can be applied to various

mucous membranes and skin.

2-Inhalation
Provides a rapid access to systemic
circulation; it is the common route of

administration for gases and volatile
drugs.

3-Subcutaneous pellet implantation

Pellet under skin induces fibrosis around it leading to slow absorption
and long duration (e.g. contraceptives, steroid hormones)

4-Transdermal delivery system
By applications of drugs to the skin for systemic effect. The drug is

released through a rate controlling membrane into the skin and so
into the systemic circulation.

5-Hypospray gun (jet injection syringe)
Very convenient, no need for sterilization, not painful, offers self-

medications. Used for giving insulin & for mass immunization.

6-Intranasal
Calcitonin is used in treatment of osteoporosis as a nasal spray.

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Pharmacology Mnemonics and Short Notes By Muhammad Ramzan Ul Rehman