Drugs acting on Common receptors

Question 1

Alpha agonists

Answer 1

Alpha-1: Decongestants (e.g. phenylephrine/oxymetazoline)
Alpha-2: Glaucoma (e.g. topical brimonidine)

Question 2

alpha antgonists

Answer 2

Benign prostatic hyperplasia (e.g. tamsulosin)
Hypertension (e.g. doxazosin)

Question 3

Beta-1agonist

Answer 3

Inotropes (e.g. dobutamine)

Question 4

Beta-1 antagonist

Answer 4

Non-selective & selective beta-blockers (e.g. atenolol, bisoprolol)

Question 5

Beta-2 agonist

Answer 5

Bronchodilators (e.g. salbutamol)

Question 6

beta-2 antagonist

Answer 6

Non-selective beta-blockers (e.g. propranolol, labetalol)

Question 7

dopamine agonist

Answer 7

Parkinson’s disease (e.g. ropinirole)
Prolactinoma

Question 8

dopamine antagonist

Answer 8

Schizophrenia (antipsychotics e.g. haloperidol)
Anti-emetics (e.g. metoclopramide/domperidone)

Question 9

GABA agonist

Answer 9

Benzodiazepines
Baclofen

Question 10

GABA antagonist

Answer 10

Flumazenil

Question 11

Histamine-1 antagonist

Answer 11

Antihistamines (e.g. loratadine)

Question 12

Histamine-2 antagonist

Answer 12

Antacids (e.g. ranitidine)

Question 13

muscarinic agonist

Answer 13

Glaucoma (e.g. pilocarpine)

Question 14

muscarinic antagonist

Answer 14

Atropine (e.g. for bradycardia)
Bronchodilator (e.g. ipratropium bromide, tiotropium)
Urge incontinence (e.g. oxybutynin)

Question 15

Nicotinic agonist

Answer 15

Nicotine
Varenicline (used for smoking cessation)
Depolarising muscle relaxant (e.g. suxamethonium)

Question 16

nicotinic antagonist

Answer 16

Non-depolarising muscle relaxants (e.g. atracurium)

Question 17

oxytocin agonist

Answer 17

Inducing labour (e.g. Syntocinon)

Question 18

oxytocin antagonist

Answer 18

Tocolysis (e.g. atosiban)

Question 19

Serotonin agonist

Answer 19

Triptans (for acute migraine, e.g. zolmitriptan)

Question 20

Serotonin antagonist

Answer 20

Anti-emetics (e.g. ondansetron)