Question

drugs known as beta - blockers may be useful for treating

excessive salivation.

diarrhea.

excessive heart rate.

constipation.

prostate disorders.

check answer

Explanation:

Beta - blockers work by blocking the effects of the hormone epinephrine (adrenaline). They reduce the heart rate and the force of heart contractions. Excessive heart rate (tachycardia) can be a condition where the heart beats too fast. By reducing the heart rate, beta - blockers can be beneficial in treating excessive heart rate. Excessive salivation is more related to parasympathetic nervous system over - activity (not typically treated with beta - blockers). Diarrhea is often related to gastrointestinal motility issues (not the main target of beta - blockers). Constipation is also a gastrointestinal issue (not the main use of beta - blockers). Prostate disorders (like benign prostatic hyperplasia) are often treated with alpha - blockers (not beta - blockers).

Answer:

excessive heart rate.