Azor

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Azor

What is Azor? Definition and Purpose

Property Description
Active ingredients Amlodipine besylate, Olmesartan medoxomil
Form Fixed-dose combination tablet (Oral preparation)
Pharmacological class CCB (Calcium Channel Blocker) and ARB (Angiotensin II Receptor Blocker)
Common use Management of essential hypertension (high blood pressure)
Origin Synthetic

Azor is a prescription-only antihypertensive agent formulated as a synthetic fixed-dose combination tablet. This oral preparation is specifically indicated for the management of high blood pressure in adults who are likely to require the combined action of two distinct drug classes to achieve effective blood pressure regulation. By combining two mechanisms in a single pill, it offers a simplified yet comprehensive approach to antihypertensive therapy. A key differentiating factor for this specific formulation is its positioning as a single agent for patients needing highly effective, sustained control when initial monotherapy proves insufficient.


Composition and Dual-Class Antihypertensive Classification

The medication is composed of two primary active ingredients that define its pharmacological identity: Amlodipine besylate and Olmesartan medoxomil. The Amlodipine component is classified as a Calcium Channel Blocker (CCB), a type of medicine that causes vasodilation by relaxing the smooth muscle in blood vessel walls. Olmesartan medoxomil is categorized as an Angiotensin II Receptor Blocker (ARB), which prevents the action of a key hormone that normally causes vessels to constrict and signals salt retention. Pharmacological studies confirm that combining an ARB and a CCB offers synergistic blood pressure reduction, validating the strategy behind this combination drug. This means the two components work together to provide a stronger, more consistent lowering of blood pressure than either agent alone.


General Purpose and Therapeutic Application

The fundamental therapeutic purpose of Azor is to deliver effective, sustained control over essential hypertension by significantly reducing peripheral vascular resistance. A typical neutral use scenario for Azor involves patients whose blood pressure remains elevated despite taking a single antihypertensive medication. The drug's dual action is critical for minimizing the mechanical strain on the cardiovascular system. The reduction of elevated blood pressure, which is the direct goal of this treatment, is clinically recognized for reducing the lifetime risk of cardiovascular events, such as stroke and heart attack. Therefore, taking this medication helps protect your heart and blood vessels from the long-term damage caused by persistently high blood pressure.

Regulatory References

  1. NICE Guideline on Hypertension in Adults
  2. High Blood Pressure (Hypertension) Overview (NHS)
  3. NICE Guideline on Hypertension Treatment Recommendations

What side effects are possible with Azor?

Possible Side Effects and Safety Information

Serious Warnings and Precautions

Fetal Toxicity (Boxed Warning): Drugs that act directly on the renin-angiotensin system (including the olmesartan component) can cause injury and death to the developing fetus, particularly when used during the second and third trimesters of pregnancy. Azor is contraindicated in pregnancy and must be discontinued as soon as possible if pregnancy is detected.

Sprue-like Enteropathy: Severe, chronic diarrhea with substantial weight loss has been reported in patients taking olmesartan-containing products, sometimes months to years after initiation. If these symptoms occur and no other cause is identified, discontinuation of Azor should be considered.

Hypotension: Symptomatic low blood pressure, or hypotension, may be anticipated, particularly in patients who are volume- or salt-depleted. Patients with severe obstructive coronary artery disease may also experience an increase in the frequency or severity of angina or acute myocardial infarction upon initiation or dosage increase.


Adverse Reactions

The most common adverse reaction reported in clinical trials, with an incidence of 3% or greater, is edema (swelling), which is generally dose-dependent for the amlodipine component. Other reactions reported more frequently than placebo include dizziness.


Population-Specific Safety Considerations

  • Pregnancy and Lactation: Contraindicated during pregnancy; breastfeeding is not recommended.
  • Diabetic Patients: Co-administration with the drug aliskiren is contraindicated in patients with diabetes.
  • Hepatic or Severe Renal Impairment: Patients with hepatic impairment, or those ge 75 years old, may have decreased clearance of amlodipine. Changes in renal function, including renal failure, may be anticipated in susceptible individuals (e.g., those with severe congestive heart failure or renal artery stenosis).

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Azor is officially documented in regulatory sources as an exaggeration of its pharmacological effects, primarily concerning the cardiovascular system. Due to the severity of the documented risks, regulatory guidance dictates that immediate medical attention must be sought for any suspected overdose.

Overdose Manifestation Regulatory Description
Cardiovascular Effects Marked and potentially prolonged systemic hypotension (abnormally low blood pressure) due to excessive peripheral vasodilation, with reported disturbances in heart rate (tachycardia or bradycardia).
Severe Outcome Risk Profound hypotension carries the risk of progression to shock, which is a life-threatening complication documented in official labeling.

The documented treatment procedures are strictly symptomatic and supportive. These include medical measures for cardiovascular support, such as managing fluid volume, and continuous monitoring of cardiac and respiratory function. For recent ingestion, procedures like gastric lavage or administration of activated charcoal are officially described as possible supportive measures. Official documentation states there is no specific antidote known for Azor overdose, and common methods like hemodialysis are unlikely to be effective due to the drug’s high protein binding. A factor noted in regulatory labeling is the decreased clearance of the amlodipine component in geriatric and hepatically impaired patients.

Therapeutic Uses of Azor

What Azor Treats: Main Uses and Benefits

Azor is commonly used for the management of essential hypertension (high blood pressure), a condition characterized by periods of heightened physiological stress on the cardiovascular system. It is applied when a dual-action approach is appropriate to support the reduction of the symptomatic sign of persistently high blood pressure readings and address long-term organ strain. Its use is aligned with the goal of managing hypertension, a core strategy that assists with maintaining stability and helps reduce the potential for long-term health complications.

This medication is typically applied when a dual-action approach is appropriate to support the reduction of elevated blood pressure, especially when hypertension is classified as moderate or severe or when supportive symptom management is needed in situations where monotherapy was not fully sufficient.

The therapeutic benefit supports the patient in easing the overall symptom burden, assisting with maintaining a sense of stability, and contributing to overall well-being. Azor is commonly used for essential hypertension and supports cardiovascular risk management for at-risk adults, including those with conditions like diabetes or hyperlipidemia.


Quick Fact: Support for Persistent Blood Pressure Elevation


Eligibility and Restrictions for Use

Who Can and Cannot Use Azor?

Azor is an approved treatment for hypertension exclusively for adults. The use of this fixed-dose combination drug is subject to strict eligibility rules based on official regulatory documentation.

The medication is contraindicated for several populations, including women who are in the second or third trimesters of pregnancy due to the risk of fetal harm. It must also not be used by patients with known hypersensitivity to any component of the tablet. A specific contraindication exists for patients with diabetes mellitus who are concurrently taking any medication containing aliskiren.

Eligibility is limited or conditional for other groups. The safety and effectiveness of Azor have not been established in pediatric patients under 18 years of age. The drug is not recommended for use by lactating women. Additionally, Azor is not recommended as initial therapy for patients aged 75 years or older or for those with hepatic impairment, as the specific low-dose components sometimes required for these groups are not available in the combination tablet. Caution and close supervision are also necessary for patients with severe renal impairment or those who are volume-depleted.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents detail several clinically significant drug interactions for Azor (Amlodipine/Olmesartan Medoxomil) across specific medicinal product categories.


Key Interaction Restrictions and Requirements

Dual Renin-Angiotensin System (RAS) Blockade: Co-administration with Aliskiren is contraindicated in patients with diabetes due to a significantly increased risk of hypotension, hyperkalemia, and worsening renal function. Combining Azor with other Angiotensin-Converting Enzyme (ACE) inhibitors or Angiotensin Receptor Blockers (ARBs) is generally avoided because of similar increased risks.

CYP3A Interactions and Dose Limits: Amlodipine is metabolized by CYP3A4. Therefore, strong CYP3A Inhibitors (e.g., ketoconazole) may increase Amlodipine exposure, requiring close monitoring. Conversely, CYP3A Inducers may reduce Amlodipine effectiveness. The dose of Simvastatin must be limited to 20 mg daily when co-administered with Azor, as Amlodipine increases Simvastatin exposure.

Electrolyte and Renal Impact: Concomitant use with Potassium-Raising Agents (e.g., potassium-sparing diuretics) necessitates monitoring serum potassium levels due to the risk of hyperkalemia. Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), including selective COX-2 inhibitors, may weaken Azor's blood pressure-lowering effect and increase the risk of renal function deterioration, especially in volume-depleted or elderly patients.

Absorption and Timing: The systemic exposure of Olmesartan is reduced by the bile acid sequestering agent Colesevelam hydrochloride. To mitigate this, Olmesartan should be administered at least 4 hours before the Colesevelam dose.

Mechanism of Action

Azor is a combination pharmaceutical product comprising olmesartan medoxomil and amlodipine. The two components modulate distinct molecular and intracellular pathways to alter systemic vascular tone and hemodynamics.

Olmesartan functions as an angiotensin II receptor blocker (ARB) and a selective, competitive antagonist at the angiotensin II type 1 (AT1) receptor, primarily localized on vascular smooth muscle and renal tissues. Blockade of the AT1 receptor prevents the vasoconstrictive and aldosterone-releasing effects mediated by angiotensin II, leading to smooth muscle relaxation and consequential peripheral vasodilation, resulting in a reduction in systemic vascular resistance.

Amlodipine is a dihydropyridine calcium channel blocker. Its biological target is the L-type voltage-dependent calcium channel, where it acts as an inhibitor to prevent the transmembrane influx of calcium ions into vascular smooth muscle cells. This inhibition of intracellular calcium signaling prevents actin-myosin cross-bridge formation and subsequent muscle cell contraction. The resulting arteriolar smooth muscle relaxation leads to decreased peripheral vascular resistance. The combined molecular actions of both components result in a system-level physiological consequence of decreased total peripheral resistance.

Dosage and Administration Information

How to Use Azor

Azor (amlodipine/olmesartan medoxomil) is a prescription medication administered for the long-term management of essential hypertension. The medication is formulated exclusively for oral use as a fixed-dose combination tablet. It is taken in a single, once-daily regimen.

Dosing and Administration

The standard approach to treatment involves a starting dose of 5 mg/20 mg (amlodipine/olmesartan medoxomil) once per day. The highest recommended dose for daily intake is 10 mg/40 mg. The tablet may be administered with or without food, allowing flexibility in daily scheduling.

Adjustments to the dosage must be approached methodically. A minimum interval of one to two weeks is required between any dose change to allow the body to fully respond and for the medication's maximum blood pressure effects to stabilize. The medication may be used across three clinical contexts: as initial therapy, as add-on therapy for patients inadequately controlled by one agent, or as replacement therapy for those stable on the individual components.

Usage in Specific Populations

Specific limitations exist for initiating treatment in certain patient groups. Initial therapy with Azor is not recommended for older adults age 75 and older or for patients who have hepatic impairment. Furthermore, the safety and efficacy of the medication have not been established for use in pediatric patients.

Handling Missed Doses

Should a scheduled dose be missed, the next dose should be taken at the regularly appointed time. A double dose should not be taken to compensate for the missed administration.

Recent Clinical Evidence

Azor: Recent Clinical Evidence

Overview of Combination Therapy Studies

Azor, a fixed-dose combination of amlodipine (a calcium channel blocker) and olmesartan medoxomil (an angiotensin II receptor blocker), has been studied in clinical trials primarily involving adult patients with essential hypertension (high blood pressure).

A pivotal, randomized, placebo-controlled factorial study lasting eight weeks evaluated the combination's effect on seated blood pressure. This trial compared the combination against equivalent doses of amlodipine monotherapy and olmesartan medoxomil monotherapy, as well as placebo.

Key Findings

Research found that the fixed-dose combination was associated with greater reductions in both seated systolic blood pressure (SBP) and seated diastolic blood pressure (DBP) compared to either component used alone. This effect was observed to be dose-dependent, meaning higher doses of the combination were generally associated with larger reductions in blood pressure.

Additional trials, such as the AZTEC study, used 24-hour ambulatory blood pressure monitoring (ABPM) and reported consistent blood pressure reductions throughout the 24-hour dosing period. These effects were observed across various patient subgroups, including older adults, patients with diabetes, and different racial/ethnic groups.

Tolerability and Side Effects

In controlled trials, the combination was reported to be generally tolerated by study participants. Edema (swelling), a common side effect of amlodipine monotherapy, was observed with a reduced incidence when combined with olmesartan medoxomil in the fixed-dose formulation. The most commonly reported side effects were headache and edema.

Frequently Asked Questions (FAQ)

Common questions about Azor (FAQ)

Q: How long after starting Azor will it take to see the full effect on my blood pressure?

A: Regulatory documents state that when adjusting the dose, it takes at least one to two weeks for the medication's full blood pressure-lowering effects to stabilize. This interval is specified in the regulatory guidance to allow time for maximum blood pressure effects to stabilize. Any dose adjustments must be done methodically and with supervision.

Q: Is Azor safe to take during pregnancy or while breastfeeding?

A: According to the official product information, Azor is contraindicated in pregnancy and must be stopped as soon as possible if pregnancy is detected. This is due to the potential risk of injury and death to the developing fetus, particularly when used in the second and third trimesters, as noted in the Boxed Warning for medicines that act on the renin-angiotensin system. Additionally, breastfeeding is not recommended during treatment with this medication.

Q: What is the correct way to store Azor tablets?

A: Official information indicates that Azor tablets must be stored at controlled room temperature, specifically between 20 C and 25 C (68 F to 77 F). The container must be kept tightly closed and should be protected from moisture and excessive heat. It is also strictly mandated to keep the medicine from freezing.

Q: What happens if I suddenly stop taking Azor?

A: Regulatory guidance suggests that changes to treatment, including discontinuation, must be discussed with a healthcare professional. Although not an official withdrawal effect, the regulatory label cautions that if a patient has severe obstructive coronary artery disease, initiating or increasing the dosage of the amlodipine component may be associated with an increase in the frequency or severity of angina (chest pain) or acute myocardial infarction.

Q: Can I cut, crush, or chew Azor tablets?

A: Azor is supplied as a fixed-dose combination tablet for oral administration. The official product information does not provide any instructions for cutting, crushing, or chewing the tablets. Because there are no instructions for cutting, crushing, or chewing, the tablet should be administered as supplied.

Q: Can Azor be used to treat other conditions besides high blood pressure?

A: Regulatory documents state that Azor is specifically indicated for the treatment of hypertension (high blood pressure). Its primary therapeutic purpose is to lower elevated blood pressure, which is clinically recognized for reducing the long-term risk of cardiovascular events such as stroke and heart attack. Regulatory documents confirm the medication is indicated specifically for the management of hypertension.

How should Azor be stored and disposed of?

Storage Conditions and Container Rules

Azor tablets must be stored at controlled room temperature, specifically between 20 C and 25 C (68 F to 77 F), with brief excursions permitted [Source: FDA Label]. The container must be kept tightly closed and stored in a cool, dry place [Source: MedlinePlus]. The product must be protected from moisture, excessive heat, and direct light [Source: Mayo Clinic]. It is strictly mandated to keep from freezing [Source: Mayo Clinic].

Child-Safety and Disposal Instructions

For child safety, the medication must be kept out of the reach of children [Source: Mayo Clinic]. The official disposal guidance advises against keeping unused or outdated medicine [Source: Mayo Clinic]. The preferred disposal method is using a drug take-back program or seeking advice from a healthcare professional [Source: FDA]. If a take-back option is unavailable, the product should be mixed with an undesirable substance and sealed before being placed in the household trash; the tablets should not be flushed down the toilet [Source: FDA, MedlinePlus].

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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