What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

Lopressor (Metoprolol Tartrate)


Lopressor (Metoprolol Tartrate)

Prescription Required


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Generic Equivalent - Lopressor (Metoprolol Tartrate)

Prescription Required


You'll have option to make 4 interest-free payments by credit card once your order is confirmed using Sezzle

  • Product Details


    Lopressor is prescribed to treat various heart conditions, including high blood pressure, heart attack, abnormal heart rhythm, and coronary artery disease.

    Lopressor works by reducing the workload of the heart and blood vessels. 

    Fact Table




    US FDA



    Legal status


    Chemical Name


    Elimination half-life

    3–7 hours

    Dosage (Strength)

    25mg, 37.5mg, 50mg, 75mg, 100mg


    Consult Doctor


    Lopressor, Metolar XR

    Protein binding


    PubChem CID






    ATC code






    Routes of administration

    By mouth


    Take Lopressor exactly as prescribed by your doctor.

    The usual dosage is 25-400 mg by mouth once daily.


    The active ingredient in Lopressor is metoprolol tartrate.


    Common drug-drug interactions with Lopressor include:

    • Acetylcholinesterase Inhibitors
    • Ajmaline
    • Alfuzosin
    • Alpha1-Blockers
    • Alpha2-Agonists
    • Amifostine
    • Amiodarone
    • Amphetamines
    • Antidiabetic Agents
    • Antipsychotic Agents
    • Artemether and Lumefantrine
    • Barbiturates
    • Benperidol
    • Beta2-Agonists
    • Bradycardia-Causing Agents
    • Brigatinib
    • Brimonidine
    • Bromperidol
    • Bupivacaine
    • Cannabis
    • Ceritinib
    • Cholinergic Agonists
    • CYP2D6 Inhibitors 
    • Dexmethylphenidate
    • Diazoxide
    • Dipyridamole
    • Disopyramide
    • DOBUTamine
    • Dronedarone
    • DULoxetine
    • EPHEDrine
    • EPINEPHrine
    • Ergot Derivatives
    • Etofylline
    • Fexinidazole
    • Fingolimod
    • Flunarizine
    • Grass Pollen Allergen Extract
    • Herbal Products with Blood Pressure Increasing Effects
    • Herbal Products with Blood Pressure Lowering Effects
    • Hydroxychloroquine
    • Hypotension-Associated Agents
    • Ivabradine
    • Lacosamide
    • Lercanidipine
    • Levodopa-Containing Products
    • Lidocaine 
    • Lormetazepam
    • Mavacamten
    • Mepivacaine
    • Methacholine
    • Methoxyflurane
    • Methylphenidate
    • Midodrine
    • Mirabegron
    • Molsidomine
    • Naftopidil
    • Nicergoline
    • Nicorandil
    • NIFEdipine
    • Nitroprusside
    • Nonsteroidal Anti-Inflammatory Agents
    • Obinutuzumab
    • Ozanimod
    • Peginterferon Alfa-2b
    • PENTobarbital
    • Pentoxifylline
    • Pholcodine
    • Phosphodiesterase 5 Inhibitors
    • Ponesimod
    • Prostacyclin Analogues
    • Quinagolide
    • Reserpine
    • RifAMPin
    • Rivastigmine
    • Siponimod
    • Succinylcholine
    • Sulfonylureas
    • Tasimelteon
    • Terlipressin
    • Theophylline Derivatives
    • Tofacitinib
    • White Birch Allergen Extract


    Do not abruptly stop taking this medication.

    Tell your doctor if you have a history of kidney disease, liver disease, or diabetes.

    Ask your healthcare team for a full list of side effects.

    Side Effects

    Adverse reactions may include:

    • Abdominal Pain
    • Accidental Injury
    • Alopecia
    • Anxiety
    • Arterial Insufficiency
    • Arthralgia
    • Arthritis
    • Arthropathy
    • Bradycardia
    • Bronchospasm
    • Bullous Pemphigoid
    • Cerebrovascular Accident
    • Chest Pain
    • Claudication
    • Cold Extremity
    • Confusion
    • Constipation
    • Decreased HDL Cholesterol
    • Decreased Libido
    • Depression
    • Diaphoresis
    • Diarrhea
    • Dizziness
    • Drowsiness
    • Dyspnea
    • Erectile Dysfunction
    • Erythroderma
    • Exacerbation of Psoriasis
    • Fatigue
    • First-Degree Atrioventricular Block
    • Flatulence
    • Gangrene of Skin and/or Subcutaneous Tissues
    • Hallucination
    • Headache
    • Heart Failure
    • Heartburn
    • Hepatic Insufficiency
    • Hepatitis
    • Hypotension
    • Impotence
    • Increased Serum Alkaline Phosphatase
    • Increased Serum Transaminases
    • Increased Serum Triglycerides
    • Insomnia
    • Jaundice
    • Lichenoid Dermatitis
    • Musculoskeletal Pain
    • Nausea
    • Nervousness
    • Nightmares
    • Palpitations
    • Paresthesia
    • Pemphigoid-Like Lesion
    • Peripheral Edema
    • Peyronie Disease
    • Pruritus
    • Retroperitoneal Fibrosis
    • Rhinitis
    • Skin Rash
    • Sleep Disturbance
    • Stomach Pain
    • Syncope
    • Temporary Amnesia
    • Tinnitus
    • Unstable Diabetes
    • Vertigo
    • Visual Disturbance
    • Vomiting
    • Weight Gain
    • Wheezing
    • Xerostomia


    Lopressor [package insert]. East Hanover, NJ: Novartis Pharmaceuticals Corp.; 2008.

    Frequently Asked Questions about Lopressor (Metoprolol Tartrate)

    What is Lopressor used for?

    Lopressor is used to treat heart conditions, including high blood pressure, angina (chest pain), and to lower the risk of death or hospitalization due to heart failure.

    How does Lopressor work?

    Lopressor is a beta-blocker that affects the heart and circulation by preventing certain hormones in your body from attaching to receptors on the heart, which helps to lower blood pressure and relieve chest pain.

    Is Lopressor a controlled substance?

    No, Lopressor is not classified as a controlled substance.

    Is there a generic version of Lopressor available?

    Yes, you can buy lower-cost generic versions of Lopressor at Canada Pharmacy

    How should Lopressor be taken?

    Lopressor should be taken as prescribed by your doctor. Usually it should be taken orally after a meal, between 1-3 times a day.

    What should I do if I miss a dose?

    If a dose is missed, it should be taken as soon as possible unless it's almost time for the next dose, in which case just skip the missed dose and take the next one.

    What should I do in case of an overdose?

    In case of an overdose, immediate medical attention should be sought (either call 911 or your local poison center).

    What are the side effects of Lopressor?

    Side effects can range from mild to serious, including dizziness, tiredness, depression, and shortness of breath among others.

    Is Lopressor safe for long-term use?

    Compared to other beta blockers, Lopressor is generally safer to take for a long time. It does come with serious risks if you don't take it as prescribed, and you should always watch out for the side effects as they can compound and result in a much worse situation later on. The finer details need to be made clear by talking to your doctor.

    Can I stop taking Lopressor abruptly?

    It is not advisable to stop taking Lopressor abruptly without telling your doctor as it can lead to serious complications.

    IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

    Product Code : 1612

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