Which statement about adrenergic agonists is NOT true?

Adrenergic agonists play a significant role in stimulating the sympathetic nervous system, which is responsible for the body's fight or flight response. The correct statement regarding the effects of adrenergic agonists is that they do not have effects on blood pressure. This is inaccurate because adrenergic agonists can indeed have profound effects on blood pressure.

These medications activate adrenergic receptors, leading to various physiological responses, such as increases in heart rate and blood pressure. For instance, when these agonists bind to alpha-1 receptors, they typically cause vasoconstriction, which can raise blood pressure. Meanwhile, stimulation of beta-1 receptors can also enhance cardiac output, further impacting blood pressure levels.

Thus, the assertion that adrenergic agonists do not affect blood pressure is false, making it the correct choice for this question.