Combination therapy regimens for hypertension and strategies for choosing economic benefits

If combination therapy is required, which drug combinations are best?

When a single drug is insufficient to achieve the target blood pressure level, combination therapy is often necessary. Drug combinations can be implemented in the following ways:

(1) Combination of calcium channel blockers and beta-blockers: Calcium channel blockers lower blood pressure but often lead to sympathetic nerve excitation and increased heart rate, while beta-blockers primarily lower blood pressure by inhibiting the sympathetic nervous system. Therefore, the combination of the two has a good synergistic effect, and adverse reactions can be fewer and offset.

(2) Combination of calcium channel blockers and diuretics: Calcium channel blockers lower blood pressure by directly dilating blood vessels, often leading to increased blood volume and lower limb edema. Diuretics lower blood pressure by reducing blood volume; the two drugs complement each other in their blood pressure-lowering effects. (3) Combination of calcium channel blockers with ACEIs or ARBs: Calcium channel blockers directly dilate blood vessels, while ACEIs and ARBs act on the renin-angiotensin-aldosterone system. Since their mechanisms of action differ, their combined use also has a good antihypertensive effect.

(4) Combination of diuretics with ACEIs or ARBs: ACEIs and ARBs are volume-dependent; their antihypertensive effect is better when blood volume is reduced. Furthermore, the potential adverse effects of hyperkalemia can be offset by thiazide diuretics.

(5) Combination of diuretics with beta-blockers: Diuretics and beta-blockers have different mechanisms of action in lowering blood pressure and can also have a synergistic effect. This is especially suitable for patients with heart failure.

(6) Combination of beta-blockers with alpha-blockers: Carvedilol and alprenolol (Almar) block both alpha and beta receptors, therefore their antihypertensive effect is better than using either beta or alpha receptor blockers alone. How to Choose Antihypertensive Drugs from an Economical and Effective Perspective?

Since the vast majority of hypertensive patients need lifelong medication, the following antihypertensive drugs are particularly recommended from an economic perspective.

Among antihypertensive drugs, the most cost-effective option is the thiazide diuretic hydrochlorothiazide. This drug is not only inexpensive but also has a definite antihypertensive effect. It only needs to be taken once a day, half a tablet or one tablet at a time. If sodium intake is strictly controlled, the antihypertensive effect is even more pronounced. The most common adverse reaction to this drug is hypokalemia. To prevent hypokalemia, potassium-sparing diuretics such as triamterene or spironolactone (Aldactone) can be taken concurrently.

If blood pressure is high and still cannot reach the target antihypertensive value (adults <140/90 mmHg, young adults <130/80 mmHg), ACE inhibitors such as captopril or enalapril can be added.

For hypertensive patients, when measuring blood pressure, it is essential to observe their heart rate. For patients with a rapid heart rate exceeding 80 beats per minute, beta-blockers are the first-line treatment. For patients with a fast heart rate, prone to anxiety and tension, beta-blockers not only reduce anxiety but also have a good antihypertensive effect, especially propranolol, atenolol, and metoprolol, which are significantly more affordable.

If there are contraindications to diuretics and ACE inhibitors, or if the adverse reactions are difficult to tolerate, short-acting calcium channel blockers such as nifedipine and nifedipine can also be used. Because short-acting calcium channel blockers often cause increased heart rate, beta-blockers can be taken concurrently to counteract these adverse reactions and enhance their antihypertensive effect.