Heart & Blood Pressure Heart & Blood Pressure

A suite of cardiovascular medications for the management of hypertension, angina, and arrhythmias, providing daily cardiac support.

Acetazolamide

Acetazolamide

250mg

Acetazolamide 250mg tablets, taken for glaucoma and high altitude sickness. A carbonic anhydrase inhibitor.

from $0.54 / tablet View

Adalat

Nifedipine

10/20/30mg

Nifedipine tablets from 10mg to 30mg, a calcium channel blocker used for high blood pressure and angina.

from $0.44 / tablet View

Aldactone

Spironolactone

25/100mg

Spironolactone 25mg and 100mg tablets, for the management of heart failure and high blood pressure. A potassium-sparing diuretic.

from $0.29 / tablet View

Amiloride

Amiloride

5mg

Amiloride 5mg tablets, a potassium-sparing diuretic used in the management of high blood pressure and oedema.

from $0.20 / tablet View

Amiodarone

Amiodarone

100/200mg

Amiodarone 100mg and 200mg tablets, used to treat arrhythmias. A class III antiarrhythmic agent.

from $0.78 / tablet View

Amlodipine

Amlodipine

2.5/5/10mg

Amlodipine 2.5mg, 5mg and 10mg tablets, taken for hypertension and angina. A calcium channel blocker.

from $0.31 / tablet View

Assurans

Sildenafil

20mg

Assurans 20mg sildenafil tablets, used to treat heart and blood pressure conditions. A PDE5 inhibitor.

from $2.49 / tablet View

Atenolol

Atenolol

25/50/100mg

Atenolol 25mg, 50mg and 100mg tablets, used for hypertension and angina. A selective beta-1 antagonist.

from $0.33 / tablet View

Avapro

Irbesartan

150/300mg

Irbesartan 150mg and 300mg tablets, used for high blood pressure and diabetic nephropathy. An angiotensin II receptor blocker.

from $1.06 / tablet View

Azilsartan And Chlorthalidone

Azilsartan, Chlorthalidone

40/12.5mg

Azilsartan with chlorthalidone 40/12.5mg tablets, used to manage high blood pressure. An angiotensin II receptor blocker with a thiazide-like diuretic.

from $1.35 / tablet View

Beloc

Metoprolol

20/40mg

Metoprolol 20mg and 40mg tablets, for high blood pressure and angina, taken by mouth. A beta-blocker.

from $0.38 / tablet View

Benicar

Olmesartan

10/20/40mg

Olmesartan 10mg, 20mg and 40mg tablets, for high blood pressure. An angiotensin II receptor blocker.

from $0.67 / tablet View

Bisoprolol

Bisoprolol

5/10mg

Bisoprolol 5mg and 10mg tablets, used to manage hypertension and heart failure. A selective beta-1 antagonist.

from $0.41 / tablet View

Brilinta

Ticagrelor

60/90mg

Ticagrelor 60mg and 90mg tablets, used to treat acute coronary syndrome and prevention of blood clots. A P2Y12 inhibitor.

from $0.85 / tablet View

Candesartan

Candesartan cilexetil

4/8/16mg

Candesartan cilexetil 4mg, 8mg and 16mg tablets, used in the management of hypertension and heart failure. An angiotensin II receptor blocker.

from $0.71 / tablet View

Cardarone

Amiodarone

100/200mg

Amiodarone 100mg and 200mg tablets, taken for life-threatening heart rhythm disorders. An antiarrhythmic.

from $0.78 / tablet View

Cardizem

Diltiazem

30/60/90/120/180mg

Diltiazem tablets from 30mg to 180mg, used to treat hypertension and angina. A calcium channel blocker.

from $0.45 / tablet View

Carvedilol

Carvedilol

3.125/6.25/12.5/25mg

Carvedilol 3.125mg, 6.25mg and 25mg tablets, used to manage heart failure and high blood pressure. A beta-blocker and alpha-1 blocker.

from $0.42 / tablet View

Catapres

Clonidine

100mcg

Clonidine 100mcg oral tablets for high blood pressure. An alpha-2 agonist antihypertensive agent.

from $1.00 / tablet View

Chlorthalidone

Chlorthalidone

6.25/12.5mg

Chlorthalidone 6.25mg and 12.5mg tablets, used to treat high blood pressure and oedema. A thiazide-like diuretic.

from $0.49 / tablet View

Cilostazol

Cilostazol

50/100mg

Cilostazol 50mg and 100mg tablets, used to manage intermittent claudication. An antiplatelet agent.

from $0.83 / tablet View

Clonidine

Clonidine

0.1mg

Clonidine 0.1mg tablets, taken for hypertension and ADHD. An alpha-2 adrenergic agonist given by mouth.

from $0.37 / tablet View

Clopidogrel

Clopidogrel Bisulfate

75mg

Clopidogrel bisulfate 75mg tablets, used to manage heart attack and stroke prevention. A P2Y12 inhibitor.

from $0.53 / tablet View

Coreg

Carvedilol

3.125/6.25/12.5/25mg

Carvedilol tablets from 3.125mg to 25mg, used for hypertension and heart failure. A beta blocker.

from $0.42 / tablet View

Coumadin

Warfarin

1/2/5mg

Warfarin 1mg, 2mg and 5mg tablets, used to treat atrial fibrillation and deep vein thrombosis. An anticoagulant.

from $0.40 / tablet View

Coversyl

Perindopril

4mg

Perindopril 4mg tablets, used to manage high blood pressure and heart failure as an angiotensin-converting enzyme inhibitor.

from $1.45 / tablet View

Cozaar

Losartan

25/50/100mg

Losartan 25mg, 50mg and 100mg tablets, used in the treatment of high blood pressure and stroke risk as an angiotensin II receptor blocker.

from $0.54 / tablet View

Diamox

Acetazolamide

250mg

Acetazolamide 250mg tablets, used in the treatment of glaucoma and altitude sickness. A carbonic anhydrase inhibitor.

from $0.54 / tablet View

Digoxin

Digoxin

0.25mg

Digoxin 0.25mg tablets, used for heart failure and atrial fibrillation. A cardiac glycoside and inotrope.

from $0.44 / tablet View

Diltiazem

Diltiazem Hcl

30/60/90/120mg

Diltiazem Hcl tablets from 30mg to 120mg, taken for hypertension and angina. A calcium channel blocker.

from $0.66 / tablet View

Edarbi

Azilsartan Medoxomil

40mg

Azilsartan medoxomil 40mg tablets, for the management of hypertension, an angiotensin II receptor blocker.

from $1.27 / tablet View

Eliquis

Apixaban

2.5/5mg

Apixaban 2.5mg and 5mg tablets, used in the management of blood clot prevention and atrial fibrillation. A direct factor Xa inhibitor.

from $0.43 / tablet View

Enalapril

Enalapril

2.5/5/10mg

Enalapril 2.5mg, 5mg and 10mg tablets, used in the management of hypertension and heart failure. An ACE inhibitor.

from $0.43 / tablet View

Entresto

Sacubitril, Valsartan

97/103mg

Sacubitril and valsartan 97/103mg tablets, for chronic heart failure with reduced ejection fraction. An angiotensin receptor neprilysin inhibitor.

from $1.79 / tablet View

Eplerenone

Eplerenone

25/50mg

Eplerenone 25mg and 50mg tablets, taken for heart failure and hypertension. An aldosterone antagonist.

from $2.55 / tablet View

Flecainide

Flecainide

100mg

Flecainide 100mg oral tablets, taken for heart rhythm disorders. A class IC antiarrhythmic agent.

from $1.56 / tablet View

Furosemide

Furosemide

40/100mg

Furosemide 40mg and 100mg tablets, for the management of fluid retention and high blood pressure. A loop diuretic.

from $0.17 / tablet View

Gutron

Midodrine

5mg

Midodrine 5mg tablets, used for orthostatic hypotension, taken by mouth. An alpha-adrenergic agonist.

from $0.59 / tablet View

Hydrochlorothiazide

Hydrochlorothiazide

12.5/25mg

Hydrochlorothiazide 12.5mg and 25mg tablets, used in the management of hypertension and oedema. A thiazide diuretic.

from $0.26 / tablet View

Imdur

Isosorbide mononitrate

20/30/40/60mg

Isosorbide mononitrate 20mg to 60mg tablets, for angina pectoris. A nitrate vasodilator taken by mouth.

from $0.57 / tablet View

Indapamide

Indapamide

1.5/2.5mg

Indapamide 1.5mg and 2.5mg tablets, used to manage high blood pressure. A thiazide-like diuretic.

from $1.03 / tablet View

Inderal

Propranolol

10/20/40/80mg

Propranolol 10mg, 40mg and 80mg tablets, a beta-blocker used to manage high blood pressure and migraine prevention.

from $0.34 / tablet View

Inderal La

Propranolol

40mg

Propranolol 40mg extended-release capsules, used for hypertension, angina and migraine prevention. A non-selective beta-blocker.

from $0.76 / capsule View

Irbesartan

Irbesartan

150/300mg

Irbesartan 150mg and 300mg tablets, for the management of high blood pressure and diabetic nephropathy. An angiotensin II receptor blocker.

from $0.87 / tablet View

Isoptin

Verapamil

40/120/240mg

Verapamil 40mg, 120mg and 240mg tablets, a calcium channel blocker for the management of hypertension, angina and arrhythmia.

from $0.44 / tablet View

Isordil

Isosorbide dinitrate

10mg

Isosorbide dinitrate 10mg tablets, used to treat angina pectoris and congestive heart failure. A nitrate vasodilator.

from $0.64 / tablet View

Isosorbide

Isosorbide mononitrate

20/30/40/60mg

Isosorbide mononitrate 20mg to 60mg tablets, a nitrate vasodilator used in the treatment of angina pectoris.

from $0.57 / tablet View

Lanoxin

Digoxin

0.25mg

Digoxin 0.25mg tablets, taken for heart failure and atrial fibrillation. A cardiac glycoside taken by mouth.

from $0.44 / tablet View

Lasix

Furosemide

40/100mg

Furosemide 40mg and 100mg tablets, used to treat fluid retention and heart-related swelling. A loop diuretic.

from $0.31 / tablet View

Letairis

Ambrisentan

5/10mg

Ambrisentan 5mg and 10mg tablets, taken for pulmonary arterial hypertension. An endothelin receptor antagonist.

from $13.57 / tablet View

Lisinopril

Lisinopril

5/10mg

Lisinopril 5mg and 10mg tablets, used for high blood pressure and heart failure as an ACE inhibitor.

from $0.55 / tablet View

Losartan

Losartan

25/50/100mg

Losartan 25mg, 50mg and 100mg tablets, used in the treatment of hypertension. An angiotensin II receptor blocker.

from $0.54 / tablet View

Micardis

Telmisartan

20/40/80mg

Telmisartan tablets from 20mg to 80mg, used in the management of hypertension. An angiotensin II receptor blocker.

from $0.75 / tablet View

Midodrine

Midodrine hydrochloride

2.5mg

Midodrine hydrochloride 2.5mg tablets, for the management of orthostatic hypotension. An alpha-agonist.

from $3.25 / tablet View

Nebivolol

Nebivolol

2.5/5/10mg

Nebivolol 2.5mg, 5mg and 10mg tablets, used in the management of high blood pressure as a beta-1 selective antagonist.

from $0.62 / tablet View

Nexletol

Bempedoic acid

180mg

Bempedoic acid 180mg tablets, used to treat high cholesterol levels. An ATP citrate lyase inhibitor.

from $1.57 / tablet View

Nimotop

Nimodipine

30mg

Nimodipine 30mg capsules, used in the treatment of neurological deficits due to vascular spasms. A calcium channel blocker.

from $1.01 / capsule View

Norvasc

Amlodipine

2.5/5/10mg

Amlodipine tablets from 2.5mg to 10mg, used in the treatment of high blood pressure and angina. A calcium channel blocker.

from $0.31 / tablet View

Plavix

Clopidogrel

75mg

Clopidogrel 75mg tablets, an antiplatelet for the prevention of heart attack and stroke, a P2Y12 inhibitor.

from $0.53 / tablet View

Pletal

Cilostazol

50/100mg

Cilostazol 50mg and 100mg tablets, a vasodilator used in the management of intermittent claudication.

from $0.83 / tablet View

Pradaxa

Dabigatran Etexilate

150mg

Dabigatran etexilate 150mg capsules, for the management of stroke and blood clot prevention. A direct thrombin inhibitor.

from $6.07 / capsule View

Procardia

Nifedipine

30mg

Nifedipine 30mg tablets, used in the management of high blood pressure and angina. A calcium channel blocker.

from $0.97 / tablet View

Procoralan

Ivabradine

5mg

Ivabradine 5mg tablets, an If channel blocker used to manage chronic heart failure and chronic stable angina.

from $2.28 / tablet View

Propranolol

Propranolol

10/20/40/80mg

Propranolol tablets from 10mg to 80mg, used to manage high blood pressure, angina and migraine prevention. A beta-blocker.

from $0.34 / tablet View

Ranexa

Ranolazine

500/1000mg

Ranolazine 500mg and 1000mg tablets, taken for chronic angina. A late sodium current inhibitor medicine.

from $1.51 / tablet View

Revatio

Sildenafil

20mg

Sildenafil 20mg tablets, used for pulmonary arterial hypertension (PAH). A PDE5 inhibitor medicine.

from $1.60 / tablet View

Rivaroxaban

Rivaroxaban

10mg

Rivaroxaban 10mg tablets, used to treat conditions that require anticoagulation. A Factor Xa inhibitor.

from $0.85 / tablet View

Sotalol

Sotalol

40mg

Sotalol 40mg tablets, for the management of arrhythmia. A class III antiarrhythmic beta-blocker.

from $1.00 / tablet View

Spironolactone

Spironolactone

25/100mg

Spironolactone 25mg and 100mg tablets, used in the treatment of congestive heart failure and oedema. An aldosterone antagonist.

from $0.39 / tablet View

Tambocor

Flecainide

50/100mg

Flecainide 50mg and 100mg tablets, used in the treatment of irregular heartbeats. A Class Ic antiarrhythmic.

from $1.47 / tablet View

Telmisartan

Telmisartan

20/40/80mg

Telmisartan 20mg, 40mg and 80mg tablets, for the management of hypertension and cardiovascular risk reduction. An angiotensin II receptor antagonist.

from $0.75 / tablet View

Tenormin

Atenolol

25/50/100mg

Atenolol 25mg, 50mg and 100mg tablets, used in the treatment of hypertension and angina. A beta-blocker.

from $0.34 / tablet View

Toprol

Metoprolol

25/50/100mg

Metoprolol 25mg, 50mg and 100mg tablets, used to manage high blood pressure and heart failure. A beta-blocker.

from $0.56 / tablet View

Toprol Xl

Metoprolol

25/50/100mg

Metoprolol 25mg, 50mg and 100mg extended-release tablets, for high blood pressure and angina. A beta-blocker.

from $0.77 / tablet View

Torsemide

Torsemide

10/20mg

Torsemide 10mg and 20mg tablets, used in the management of fluid retention and heart failure. A loop diuretic.

from $0.47 / tablet View

Trandate

Labetalol

50/100/200mg

Labetalol 50mg, 100mg and 200mg tablets, used in the management of high blood pressure. A combined alpha and beta blocker.

from $1.26 / tablet View

Trimetazidine

Trimetazidine

20mg

Trimetazidine 20mg oral tablets, used to manage angina pectoris. A metabolic anti-anginal medicine.

from $0.94 / tablet View

Tritace

Ramipril

1.25/2.5/5/10mg

Ramipril tablets from 1.25mg to 10mg, used to manage high blood pressure and heart failure. An ACE inhibitor.

from $0.61 / tablet View

Vastarel

Trimetazidine

20mg

Trimetazidine 20mg tablets, used in the management of angina pectoris and dizziness of vascular origin. An anti-anginal.

from $1.25 / tablet View

Verapamil

Verapamil

40/120mg

Verapamil 40mg and 120mg tablets, for the management of high blood pressure, angina and heart rhythm issues as a calcium channel blocker.

from $0.26 / tablet View

Warfarin

Warfarin

1/2/5mg

Warfarin 1mg, 2mg and 5mg tablets, used to manage blood clots and atrial fibrillation. An anticoagulant.

from $0.40 / tablet View

Xarelto

Rivaroxaban

10/15/20mg

Rivaroxaban 10mg, 15mg and 20mg tablets, an anticoagulant taken for blood clot prevention and atrial fibrillation.

from $0.85 / tablet View

Zebeta

Bisoprolol

5/10mg

Bisoprolol 5mg and 10mg tablets, an oral selective beta-1 blocker for hypertension, taken by mouth.

from $0.47 / tablet View

Zestril

Lisinopril

2.5/5/10mg

Lisinopril 2.5mg, 5mg and 10mg tablets, used in the treatment of hypertension and heart failure. An ACE inhibitor.

from $0.46 / tablet View

Heart and blood pressure medicines are grouped here because so many act on the same system: how hard the heart pumps and how wide the blood vessels stay. They are not interchangeable. Amlodipine and generic Norvasc relax blood vessels for hypertension and angina, atenolol slows the heart rate, and losartan blocks a hormone that tightens arteries. Diuretics shift fluid, generic Eliquis, generic Xarelto and warfarin each prevent clots in their own way, and generic Revatio is sildenafil used for pulmonary arterial hypertension. Some items here steady the heart's rhythm, others lower cholesterol. Prices appear per tablet in HKD, and a tracked courier option is available at checkout.

Understanding Heart & Blood Pressure

Heart & Blood Pressure medications form a broad group of drugs that help the cardiovascular system maintain normal pressure and rhythm. They are used when the heart needs assistance in pumping efficiently or when blood vessels require support to keep pressure within a healthy range. People dealing with high blood pressure, chest discomfort, or irregular heartbeats often look for reliable daily support that fits their lifestyle and budget.

The category includes agents such as Amlodipine, Lisinopril and Metoprolol, which are widely recognised for their role in cardiovascular care. These medicines work through different mechanisms, allowing clinicians to match therapy to an individual’s specific cardiac profile.

Daily use of Heart & Blood Pressure drugs aims to reduce the long-term risk of complications, improve energy levels, and help maintain everyday activities without interruption.

Conditions Treated by Heart & Blood Pressure

  • Hypertension - persistent elevation of arterial pressure that can strain the heart and vessels.
  • Angina pectoris - chest pain caused by reduced blood flow to the heart muscle during exertion.
  • Arrhythmias - irregular heart rhythms, including atrial fibrillation, ventricular tachycardia and other conduction disorders.

Related or secondary conditions

  • Heart failure - weakened pumping ability that may benefit from blood-pressure-lowering agents.
  • Peripheral vascular disease - narrowed arteries in the limbs that sometimes respond to the same drug classes.

Typical symptoms prompting medication

  • Headaches, dizziness or visual disturbances linked to high pressure.
  • Tightness or pressure in the chest during activity or stress.
  • Palpitations, skipped beats or a fluttering sensation in the chest.

These signs help individuals recognise when Heart & Blood Pressure support may be relevant to their health journey.

  • Lipid-Lowering Therapies - focus on cholesterol reduction rather than pressure control.
  • Anticoagulation Agents - prevent clot formation; often prescribed alongside blood-pressure drugs for stroke risk reduction.
  • Diuretic-Only Formulations - target fluid balance without the additional vascular effects of other classes.

Each related category addresses a distinct aspect of cardiovascular health while sometimes overlapping in patient management.

Medication Options for Heart & Blood Pressure

  • ACE Inhibitors - relax blood vessels by blocking angiotensin-converting enzyme.

  • Lisinopril, Perindopril, Ramipril

  • Angiotensin II Receptor Blockers (ARBs) - prevent angiotensin II from tightening vessels.

  • Losartan, Valsartan, Olmesartan

  • Calcium Channel Blockers - widen arteries and reduce heart workload.

  • Amlodipine, Nifedipine, Diltiazem

  • Beta-Blockers - slow heart rate and lower cardiac output.

  • Metoprolol Succinate, Bisoprolol, Carvedilol

  • Diuretics - promote fluid excretion to decrease circulating volume.

  • Hydrochlorothiazide, Furosemide, Chlortalidone

  • Anticoagulants - interfere with clotting pathways for thrombo-prevention.

  • Apixaban, Rivaroxaban, Warfarin Sodium

  • Antiarrhythmics - stabilise electrical activity of the heart.

  • Amiodarone, Flecainide, Sotalol

  • Other Agents - target specific mechanisms such as vasodilation or heart-muscle efficiency.

  • Hydralazine, Ivabradine, Sacubitril

These classes provide a toolbox that can be combined or sequenced according to clinical judgement.

What to Know About Heart & Blood Pressure

The cardiovascular system relies on a delicate balance of pressure, rhythm and contractile strength. When one element deviates, the body may experience fatigue, organ strain or acute events. Medications in this category aim to restore that balance by either lowering systemic pressure, smoothing electrical conduction, or enhancing heart muscle performance.

Therapeutic approaches often begin with a single drug class, adding others only if blood pressure remains elevated or rhythm issues persist. In chronic management, steady dosing helps maintain stable levels, while acute settings may call for rapid-acting formulations to quickly bring pressure within safe limits.

Knowing the purpose of each class helps patients appreciate why a doctor might adjust therapy over time, especially as age, lifestyle or co-existing conditions evolve.

Common Users

  • Adults diagnosed with persistent high blood pressure who require ongoing pressure control.
  • Individuals experiencing chest discomfort during physical activity and needing vascular relaxation.
  • Patients with documented irregular heartbeats who benefit from rhythm-stabilising agents.
  • Older adults managing multiple cardiovascular risk factors, often using a combination of drug classes for broad protection.

These examples show where Heart & Blood Pressure medications become part of routine health maintenance.

Common Terms

Hypertension: A condition where arterial pressure stays consistently above normal ranges.

Angina: Chest pain that arises when the heart muscle does not receive enough oxygen-rich blood.

Arrhythmia: Any deviation from the heart’s normal rhythm, including beats that are too fast, too slow, or irregular.

ACE inhibitor: A drug that blocks an enzyme responsible for narrowing blood vessels, thereby lowering pressure.

Beta-blocker: A medication that reduces heart rate and contractility by antagonising adrenaline receptors.

Anticoagulant: An agent that interferes with the clotting cascade to prevent blood clots from forming.

Sources

  1. Blood pressure and your heart - Heart Foundation — National Heart Foundation of Australia
  2. High blood pressure - NHS — NHS
What heart and blood pressure medicines does PockDose sell?

PockDose stocks blood pressure tablets such as amlodipine 2.5, 5 and 10mg, losartan 25, 50 and 100mg, ramipril 1.25 to 10mg and bisoprolol 5 and 10mg. Diuretics include furosemide 40 and 100mg and spironolactone 25 and 100mg. Blood thinners cover warfarin 1, 2 and 5mg, rivaroxaban 10 to 20mg and clopidogrel 75mg. Bempedoic acid 180mg is listed for high cholesterol.

Can I buy generic versions of Norvasc, Cozaar and Plavix?

Yes. Amlodipine is listed as a generic and as generic Norvasc, both in 2.5, 5 and 10mg tablets. Losartan comes as a generic and as generic Cozaar in 25, 50 and 100mg tablets. Clopidogrel 75mg is available as generic Plavix. Combination tablets include azilsartan with chlorthalidone 40/12.5mg. Every product page shows the price per tablet in Hong Kong dollars.

Can I order a long course of cholesterol or blood pressure tablets to Hong Kong?

Yes. Every order ships in plain, unbranded packaging with nothing on the outside about the contents. Tracked courier takes 5 to 9 business days with online tracking; standard airmail takes 14 to 21 business days, untracked. Orders can be cancelled within 24 hours if not yet dispatched. If a parcel does not arrive within the window or arrives damaged, it is sent again free, or refunded if that is not possible.

What is the purpose of Heart & Blood Pressure medications?

They are designed to help maintain normal arterial pressure, support heart rhythm, and reduce the workload on the cardiovascular system.

Which conditions are most commonly managed with these drugs?

High blood pressure, chest pain due to reduced blood flow, and irregular heartbeats are the primary targets.

Are there different drug classes within this category?

Yes; common classes include ACE inhibitors, ARBs, calcium channel blockers, beta-blockers, diuretics, anticoagulants and antiarrhythmics.

Can a single medication address more than one condition?

Some agents, like certain beta-blockers, can lower blood pressure and also help control heart rhythm.

What forms do these medications come in?

They are available as oral tablets, extended-release capsules, and, for some agents, injectable formulations for hospital use.

Do lifestyle changes affect the need for medication?

Adopting a low-salt diet, regular exercise and stress management can complement pharmacologic therapy and sometimes reduce dosage requirements.

Are there any historical milestones in managing heart and blood pressure?

The introduction of ACE inhibitors in the late 1970s and beta-blockers in the 1960s marked significant advances in controlling hypertension and arrhythmias.

What is the difference between a diuretic and a calcium channel blocker?

Diuretics promote fluid loss to lower volume-related pressure, while calcium channel blockers relax the smooth muscle of blood vessels to reduce resistance.

Why might a patient be switched from one class to another?

Reasons include side-effect profiles, interactions with other medicines, or insufficient control of blood pressure or rhythm with the current regimen.