Final answer:
ß-blockers, also known as Class II antiarrhythmics, can have toxic effects and adverse reactions. These can include bradycardia, bronchospasm, hypotension, fatigue, and sexual dysfunction.
Step-by-step explanation:
ß-blockers, also known as Class II antiarrhythmics, have a few toxic effects and adverse reactions. These can include bradycardia, or a slower than normal heart rate, which can lead to symptoms such as dizziness and fatigue. ß-blockers can also cause bronchospasm, which may worsen symptoms in individuals with asthma or other respiratory conditions.
Additionally, ß-blockers can cause hypotension, or low blood pressure, which can result in lightheadedness or fainting. Other potential adverse effects include fatigue, cold extremities, depression, and sexual dysfunction. It is important to note that not all individuals will experience these side effects, and each person may react differently to ß-blockers.