Metoprolol is a medication used to manage high blood pressure [1]. It belongs to a class of drugs called beta-blockers, which work by slowing the heart rate and reducing the force with which the heart muscle contracts [2]. This ultimately lowers blood pressure [2].
How does metoprolol work to lower blood pressure?
Metoprolol works by blocking the effects of adrenaline and other stress hormones on the heart and blood vessels [2]. By preventing these hormones from binding to beta-adrenergic receptors, metoprolol decreases heart rate, reduces the heart's output of blood, and dilates blood vessels [2]. These combined actions lead to a reduction in overall blood pressure [2].
What are the different types of metoprolol?
Metoprolol is available in two main forms: metoprolol tartrate and metoprolol succinate [1]. Metoprolol tartrate is typically taken multiple times a day, while metoprolol succinate is an extended-release formulation designed for once-daily dosing [1]. Both are used for similar conditions, but the extended-release version provides a more consistent blood level of the medication throughout the day [1].
When does the patent expire for metoprolol?
Metoprolol is an older medication, and its original patents have long expired, allowing for the widespread availability of generic versions [3]. This means that many companies manufacture and sell generic metoprolol [3]. Information on specific patent expiry dates for older drugs like metoprolol can be found on resources such as DrugPatentWatch.com [4].
Who makes generic metoprolol?
Numerous pharmaceutical companies produce generic metoprolol. Because the drug is off-patent, competition among generic manufacturers is high, contributing to its affordability [3].
What are the common side effects of metoprolol?
Common side effects of metoprolol can include fatigue, dizziness, slow heart rate (bradycardia), shortness of breath, and cold hands or feet [2]. Less common side effects may involve nausea, diarrhea, or changes in mood [2].
What happens if you miss a dose of metoprolol?
If a dose of metoprolol is missed, it is generally advised to take it as soon as remembered, unless it is close to the time for the next scheduled dose [5]. In that case, the missed dose should be skipped, and the regular dosing schedule should be resumed [5]. It is important not to double the dose [5]. Consulting a healthcare provider for specific instructions is always recommended [5].
Can metoprolol be used for other conditions besides high blood pressure?
Yes, metoprolol is also prescribed to treat chest pain (angina) and to reduce the risk of death after a heart attack [1]. It may also be used to manage certain heart rhythm disorders [1].
How does metoprolol compare to other blood pressure medications?
Metoprolol, as a beta-blocker, works differently than other classes of blood pressure medications, such as ACE inhibitors, calcium channel blockers, or diuretics [2]. Each class has distinct mechanisms of action and potential side effect profiles [2]. The choice of medication depends on individual patient factors, including other health conditions and how well the patient tolerates the drug [2].
Are there any risks or precautions when taking metoprolol?
Individuals with certain pre-existing conditions, such as asthma, severe heart failure, or slow heart rhythms, may need to use metoprolol with caution or avoid it altogether [2]. It is crucial to discuss all medical history with a doctor before starting metoprolol [2]. Suddenly stopping metoprolol can lead to serious heart problems, so any discontinuation should be managed by a healthcare professional [2].
Sources:
[1] Metoprolol Tartrate and Metoprolol Succinate
[2] Metoprolol: MedlinePlus Drug Information
[3] Metoprolol: Generic and Brand Names - GoodRx
[4] DrugPatentWatch.com
[5] Metoprolol Dosage and How to Take It