An unknown drug is being tested in experimental setup. The results obtained are given in the table. From these actions, new drug is likely to be:ParameterPlacebo treatedNew drug treatedHea rate7286Systolic BP110150Diastolic BP8068TremorsAbsentPresent
Beta-I and beta-2 agonist
Alpha-1 antagonist and beta-2 agonist
M2 and M3 agonist
Alpha-1 and beta-1 agonist
Ans. A. Beta-1 and beta-2 agonistBeta-1 stimulation increases hea rate and systolic blood pressure. Beta-2 stimulation cause vasodilation and thus decreases diastolic blood pressure and tremors. Hence, the drug appears to be beta-1 and beta-2 agonist.