Losartan is prescribed for managing hypertension (high blood pressure) and safeguarding the kidneys against diabetes-related damage. Additionally, it aids in reducing the likelihood of strokes in individuals with high blood pressure and an enlarged heart. By reducing high blood pressure, it plays a role in preventing strokes, heart attacks, and kidney complications. Losartan falls under the category of medications known as angiotensin receptor blockers (ARBs), operating by relaxing blood vessels to facilitate smoother blood flow.


Amlodipine is employed either alone or in conjunction with other medicines to manage hypertension. Reducing elevated blood pressure aids in the prevention of strokes, heart attacks, and kidney issues. Amlodipine falls under the category of medications referred to as calcium channel blockers. Its mechanism involves the relaxation of blood vessels, facilitating smoother blood flow. Additionally, Amlodipine is utilized for the prevention of specific types of chest pain (angina). It can enhance exercise tolerance and reduce the frequency of angina episodes. However, it is not meant to be used for immediate relief during chest pain episodes. Alternative medications (such as sublingual nitroglycerin) should be utilized for alleviating chest pain attacks as per your doctor’s instructions.

How to use Amlodipine

Before starting to take amlodipine, it’s important to read the Patient Information Leaflet provided by your pharmacist, if available. This should be done each time you refill your prescription. If you have any questions, consult your doctor or pharmacist.

Take this medication orally, with or without food, as instructed by your doctor, usually once daily. If you are using the liquid form, follow the manufacturer’s instructions or ask your pharmacist for guidance. Some liquid forms may need to be shaken before use, while others do not. Use a specialized measuring device/spoon to carefully measure the dose; avoid using a household spoon as it may lead to incorrect dosing.

The dosage of amlodipine depends on your medical condition and response to treatment. Your doctor may gradually increase your dose, so follow their instructions closely.

For optimal benefits, use this medication regularly at the same time each day. Continue taking it even if you feel well, as most people with high blood pressure may not experience symptoms.

If using amlodipine for angina, take it regularly for it to be effective. It should not be used to treat sudden angina attacks; instead, use other medications (like sublingual nitroglycerin) as directed by your doctor. Contact your doctor or pharmacist if you need further information.

Inform your doctor if your condition does not improve or worsens, such as if your blood pressure remains high or increases, or if chest pain persists or worsens.

Read Also: Strategies for Preventing Prescription Drug Abuse

Pros and Cons of losartan and amlodipine

Pros of Losartan:

  • Effectiveness
  • Renal Protection
  • Tolerability

Cons of Losartan:

  • Potassium Levels
  • Dry Cough
  • Orthostatic Hypotension

Pros of Amlodipine:

  • Potency
  • Long Duration of Action
  • Peripheral Edema

Cons of Amlodipine:

  • Peripheral Edema
  • Dizziness
  • Interaction with Grapefruit

Differences Between losartan and amlodipine


Losartan is mainly used to treat hypertension (high blood pressure) and can also be prescribed to protect the kidneys in patients with type 2 diabetes.


Amlodipine is primarily used to treat hypertension but can also be used for other conditions such as angina (chest pain) and coronary artery disease.

Alternative to losartan and amlodipine

Alternative to losartan

Angiotensin II Receptor Blockers (ARBs):

These drugs work similarly to losartan by blocking the action of angiotensin II, a substance that narrows blood vessels and raises blood pressure. Common ARBs include valsartan, irbesartan, candesartan, and olmesartan.

Alternative to amlodipine

Combination Therapies:

In some cases, a healthcare provider may prescribe a combination of medications to effectively manage blood pressure. For instance, there are combination pills that contain both an ARB and a diuretic or an ACE inhibitor and a CCB.

Interactions between your drugs


Amlodipine belongs to the class of medications known as calcium channel blocking agents. It is utilized to address the following medical conditions:

  • Angina
  • Coronary Artery Disease
  • High Blood Pressure
  • Migraine Prevention (off-label use)
  • Raynaud’s Syndrome (off-label use)

Furthermore, it’s important to note that a total of 521 drugs are identified to interact with amlodipine.


Losartan belongs to the drug class known as angiotensin receptor blockers and is employed to manage the following medical conditions:

  • Alport Syndrome (off-label use)
  • Diabetic Kidney Disease
  • High Blood Pressure

Additionally, it’s noteworthy that a total of 317 drugs are recognized to interact with losartan.

Drug and food interactions

losartan food

Dietary Considerations with ARBs (Angiotensin II Receptor Blockers):

  • It is generally advised to avoid consuming high amounts of potassium in the diet, particularly through salt substitutes, as this can increase the risk of hyperkalemia (high potassium levels) in some patients taking ARBs. ARBs can contribute to hyperkalemia by reducing the secretion of aldosterone induced by angiotensin II. Patients with conditions such as diabetes, heart failure, dehydration, or kidney problems are at a higher risk of developing hyperkalemia.

Recommendations for Management:

  • Patients should receive guidance on their diet and should not use salt substitutes or potassium supplements without consulting their doctor. Regular monitoring of blood potassium levels is advised if salt substitutes are used. Patients should seek medical attention if they experience symptoms like weakness, irregular heartbeat, confusion, tingling in extremities, or heaviness in legs.

Interaction with Grapefruit Juice:

  • Grapefruit juice might slightly reduce and delay the conversion of losartan into its active form due to inhibition of CYP450 3A4-mediated metabolism in the gut wall by certain compounds in grapefruits. The exact clinical significance of this interaction is not well understood, and effects can vary significantly among individuals.

Management of Grapefruit Juice Interaction:

  • Patients who regularly consume grapefruits or grapefruit juice should be monitored for any changes in the effectiveness of losartan. If an interaction is suspected, avoiding grapefruits and grapefruit juice is recommended. However, orange juice is not expected to cause such an interaction.

amlodipine food

Monitoring for Hypotensive Effects with Psychotherapeutic and CNS-Active Agents:

  • Many drugs used for psychotherapy and affecting the central nervous system (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants) can lead to low blood pressure, especially when starting treatment or adjusting doses. Combining these drugs with antihypertensive medications and other drugs that lower blood pressure, particularly vasodilators and alpha-blockers, may result in an increased risk of low blood pressure and orthostatic hypotension (dizziness upon standing).

Recommendations for Management:

  • It is important to exercise caution and closely monitor patients for signs of low blood pressure when these drugs are used together. Some experts advise against consuming alcohol while taking vasodilating antihypertensive medications. Patients should be instructed to avoid sudden changes in posture (such as quickly standing up from a seated or lying position) and to inform their doctor if they experience symptoms like dizziness, lightheadedness, fainting, orthostatic hypotension, or rapid heartbeat.

amlodipine food

Monitoring calcium-containing products could reduce the efficacy of calcium channel blockers by filling up calcium channels with calcium. In cases of acute severe verapamil toxicity, calcium chloride has been employed for management.

Managing this situation involves overseeing the efficacy of calcium channel blocker treatment when used alongside calcium products.


The interaction between losartan and amlodipine is important to understand for effective management of hypertension. Research suggests that combining these medications can lead to enhanced blood pressure control due to their complementary mechanisms of action. Losartan, an angiotensin II receptor blocker (ARB), blocks the effects of angiotensin II, while amlodipine, a calcium channel blocker, relaxes blood vessels by preventing calcium from entering cells. This combination can result in synergistic effects, lowering blood pressure more effectively than either medication alone. However, it’s crucial to monitor patients closely for potential side effects such as hypotension or electrolyte imbalances. Healthcare providers should individualize treatment based on patient factors and regularly assess blood pressure and renal function to optimize outcomes.

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The information presented on this website is not intended as specific medical advice and is not a substitute for professional treatment or diagnosis. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.


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