Drugs acting on Common Receptors

Question 1

Decongestants (e.g. phenylephrine/oxymetazoline)

Answer 1

Alpha-1 agonist

Question 2

Alpha antagonists

Answer 2

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

Question 3

Glaucoma (e.g. topical brimonidine)

Answer 3

Alpha-2 agonist

Question 4

beta-1 agonist

Answer 4

Inotropes (e.g. dobutamine)

Question 5

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

Answer 5

beta-1 antagonist

Question 6

beta-2 agonst

Answer 6

Bronchodilators (e.g. salbutamol)

Question 7

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

Answer 7

beta-2 antagonist

Question 8

Dopamine agonist

Answer 8

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

GABA Benzodiazepines
Baclofen Flumazenil
Histamine-1 Antihistamines (e.g. loratadine)
Histamine-2 Antacids (e.g. ranitidine)
Muscarinic Glaucoma (e.g. pilocarpine) Atropine (e.g. for bradycardia)
Bronchodilator (e.g. ipratropium bromide, tiotropium)
Urge incontinence (e.g. oxybutynin)
Nicotinic Nicotine
Varenicline (used for smoking cessation)
Depolarising muscle relaxant (e.g. suxamethonium) Non-depolarising muscle relaxants (e.g. atracurium)
Oxytocin Inducing labour (e.g. Syntocinon) Tocolysis (e.g. atosiban)
Serotonin Triptans (for acute migraine, e.g. zolmitriptan) Anti-emetics (e.g. ondansetron)

Question 9

Dopamine antagonist

Answer 9

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

Question 10

Benzodiazepines
Baclofen

Answer 10

GABA agonist

Question 11

GABA antagonist

Answer 11

Flumazenil

Question 12

H1 antagonist

Answer 12

Antihistamines (e.g. loratadine)

Question 13

Antacids (e.g. ranitidine)

Answer 13

H2 antagonist

Question 14

Glaucoma (e.g. pilocarpine)

Answer 14

Muscarinic agonist

Question 15

Muscarinic antagonists

Answer 15

Atropine
ipratropium bromide
tiotropium
oxybutynin

Question 16

Nicotinic agonist

Answer 16

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

Question 17

nicotinic antagonist

Answer 17

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

Question 18

Syntocinon

Answer 18

Oxytocin agonist

Question 19

Oxytocin antagonist

Answer 19

Tocolysis (e.g. atosiban)

Question 20

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

Answer 20

Serotonin agonist (5HT)

Question 21

Serotonin (5HT) antagonist

Answer 21

Anti-emetics (e.g. ondansetron)