What symptoms occur after taking too much antihypertensive medication?

After taking excessive antihypertensive medications, a series of obvious and severe symptoms may be triggered. 1. The most direct consequence is a sharp drop in blood pressure, which may lead to a hypotensive state, manifesting as dizziness, fatigue, pallor, and even syncope. This occurs because the blood pressure is too low to maintain normal cerebral blood supply. 2. Overdose of different types of antihypertensive drugs may also cause specific symptoms, such as bradycardia and cardiac arrest (observed in cases of beta-blocker overdose), shock (observed in cases of calcium channel blocker overdose), acute kidney injury (observed in cases of renin-angiotensin system inhibitor overdose), and electrolyte disturbances (such as hypokalemia, observed in cases of diuretic overdose). 3. Overuse of antihypertensive drugs may also cause gastrointestinal reactions, such as nausea, vomiting, and abdominal discomfort, as well as increased burden on the liver and kidneys, potentially leading to hepatic and renal dysfunction. Therefore, antihypertensive drugs must be taken strictly according to medical instructions, at the correct time and dosage, to avoid overdose or accidental ingestion. If any of the above symptoms occur, immediate medical attention should be sought for timely treatment and intervention.