Drug Tolerance and Tachyphylaxis — MCQs

Pharmacodynamics deals with:-

Which sympathomimetic drug is primarily known to increase heart rate?

A female was given morphine sulphate during labour for pain but she developed respiratory distress. Which of the following will be the correct antidote?

Which of the following best demonstrates the variability in drug responsiveness among individuals?

Which of the following actions is NOT associated with tricyclic antidepressants?

Which of the following pairs are considered physiological antagonists in pharmacology?

What does the term 'tolerance' refer to in pharmacology?

Match the following drugs in Column A with their contraindications in Column B. | Column A | Column B | | :-- | :-- | | 1. Morphine | 1. QT prolongation | | 2. Amiodarone | 2. Thromboembolism | | 3. Vigabatrin | 3. Pregnancy | | 4. Estrogen preparations | 4. Head injury |

Which of the following is NOT a primary function of histamine antagonists as a drug class?

What do A and B represent in the curve shown below?