Page 89 - Pharmacology Mnemonics and Short Notes

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HT 2 Receptors

Two mean second and second mean

smooth Muscles

So second histamine is in smooth Muscles

HT 3 Receptors

Located in Endings of Nerves

And Third letter of ABC is C so I can say HT 3
is in Nerve endings of chemoreceptor Trigger zone.

5HT 4 Receptor

Enteric Nerve endings (khuch khud bhi yad kar lo)

Important Drugs and members from these Groups

H1 Blockers

First Generation

DiDi promotes cycling

Di Diphenhydramine

Di Dimenhydrinate

Promotes  Promethazine

Cycling cyclizine

Mechanism

 Histamine receptor 1 Blockers

 Structurally resemble muscarinic and adrenergic receptors
Contents Antihistamine + anticholinergic + antiemetics + antitussives

Pharmacology Mnemonics and Short Notes By Muhammad Ramzan Ul Rehman