
Medicine overview
Indications of Lomir
Lomir is indicated for the treatment of hypertension (high blood pressure). It may be used alone or in combination with other antihypertensive agents, most commonly a thiazide diuretic, when a single agent does not adequately control blood pressure.
- Established/FDA-approved use: Management of essential hypertension, as monotherapy or as part of combination antihypertensive therapy.
- Combination therapy: Lomir has been studied and used together with thiazide-type diuretics for an additive antihypertensive effect in patients not controlled on a single agent.
Lomir is not approved for the treatment of acute hypertensive emergencies or angina.
Composition
Each capsule/tablet contains Isradipine as the active ingredient, in strengths typically of 2.5 mg, 5 mg, or 10 mg (immediate-release capsules and controlled-release tablets), along with pharmaceutically acceptable excipients.
Description
Lomir is a dihydropyridine calcium channel blocker used primarily to lower blood pressure in patients with hypertension. It works by relaxing and widening blood vessels, which reduces the resistance the heart must pump against.
Lomir is available in immediate-release capsule form and as a controlled-release tablet formulation, allowing for flexible dosing schedules depending on the clinical situation.
Therapeutic Class
Lomir belongs to the dihydropyridine class of calcium channel blockers (calcium antagonists), a subclass of antihypertensive/vasodilator agents.
Pharmacology
Isradipine is a dihydropyridine calcium channel blocker. It inhibits the transmembrane influx of calcium ions into vascular smooth muscle and, to a much lesser extent, cardiac muscle, by blocking L-type (slow) calcium channels.
This action produces relaxation of vascular smooth muscle, resulting in peripheral vasodilation and a reduction in systemic vascular resistance, which lowers arterial blood pressure. Isradipine has relatively selective action on vascular smooth muscle compared to cardiac muscle, so it has minimal direct negative effect on cardiac contractility or conduction at usual clinical doses, although reflex sympathetic activation can occur.
Pharmacokinetics: Isradipine is well absorbed orally, undergoes extensive first-pass hepatic metabolism (mainly via CYP3A4) with low absolute bioavailability, and is eliminated primarily as inactive metabolites in urine and feces. Its elimination half-life is approximately 8 hours.
Dosage & Administration of Lomir
Adult Dosage - Hypertension
| Formulation | Starting Dose | Titration | Maximum Dose |
|---|---|---|---|
| Immediate-release capsules | 2.5 mg twice daily | May increase by 5 mg/day at 2-4 week intervals | 20 mg/day (little added benefit typically seen above 10 mg/day, with increased side effects) |
| Controlled-release (CR) tablets | 5 mg once daily | May increase at 2-4 week intervals | 20 mg once daily |
Special Situations
- Hepatic impairment: Lomir undergoes extensive hepatic metabolism; lower starting doses and slower titration are recommended, with close monitoring of blood pressure.
- Renal impairment: No specific dosage adjustment is generally required, but blood pressure response should be monitored.
- Elderly patients: Response to Lomir may be greater in older patients; a conservative starting dose with careful titration is advised.
Lomir should be taken consistently, either with or without food, as directed by the physician, and should not be discontinued abruptly without medical advice.
Administration of Lomir
Lomir capsules/tablets should be swallowed whole with water, taken at the same time(s) each day. Controlled-release tablets must not be crushed or chewed. Lomir may be taken with or without food, but should be taken consistently the same way each day.
Interaction of Lomir
- CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, clarithromycin, protease inhibitors): may significantly increase Lomir blood levels, increasing the risk of hypotension and other adverse effects; concurrent use should be avoided or done with caution and monitoring.
- CYP3A4 inducers (e.g., rifampin): may substantially reduce Lomir plasma levels and reduce its antihypertensive effect.
- Grapefruit juice: can increase Lomir plasma concentrations; patients should avoid grapefruit juice while taking Lomir.
- Other antihypertensive agents and diuretics: concurrent use with other blood pressure-lowering drugs (including beta-blockers) can produce additive hypotensive effects; dose adjustment and monitoring may be needed.
- NSAIDs: may reduce the antihypertensive effect of Lomir due to fluid retention and prostaglandin inhibition.
Contraindications
Isradipine is contraindicated in patients with known hypersensitivity to Isradipine or any component of the formulation.
Side Effects of Lomir
Common side effects of Lomir are generally related to its vasodilatory action and are often dose-dependent:
- Peripheral edema (swelling of the ankles/feet)
- Headache
- Dizziness or lightheadedness
- Flushing
- Palpitations and reflex tachycardia
- Fatigue
Less commonly, Lomir may cause symptomatic hypotension, and rarely, worsening of angina symptoms may occur at the start of therapy or with dose increases (see Precautions and Warnings). Patients should report persistent or severe side effects to their physician.
Pregnancy & Lactation
Pregnancy: Safety of Lomir in human pregnancy has not been well established. Lomir should be used during pregnancy only if clearly needed and if the potential benefit to the mother justifies the potential risk to the fetus. A physician should always be consulted before use in pregnancy.
Lactation: It is not known whether Lomir is excreted in human breast milk. Caution should be exercised, and a physician should be consulted before using Lomir while breastfeeding.
Precautions & Warnings
- Hypotension: Lomir can cause symptomatic hypotension, particularly at the start of treatment or with dose increases, and especially when combined with other antihypertensive agents. Blood pressure should be monitored closely.
- Peripheral edema: Dose-related peripheral edema may occur; monitor and manage as clinically indicated.
- Reflex tachycardia: Vasodilation may trigger a reflex increase in heart rate in some patients.
- Worsening angina/heart failure: Rarely, patients may experience increased frequency, duration, or severity of angina, or myocardial infarction, on starting Lomir or during dose titration, particularly in patients with obstructive coronary artery disease. Lomir should be used with caution in patients with heart failure, particularly those with underlying ischemic heart disease.
- Hepatic impairment: Since Lomir is extensively metabolized by the liver, patients with hepatic impairment require careful dose titration and monitoring.
- Abrupt discontinuation: Should be avoided; consult a physician before stopping treatment.
Overdose Effects of Lomir
Overdose with Lomir may result in excessive peripheral vasodilation leading to marked and prolonged systemic hypotension, reflex tachycardia or bradycardia, and, in severe cases, shock.
If an overdose of Lomir is suspected, seek immediate medical attention or contact emergency services / a poison control center right away. Treatment is generally supportive, with monitoring of cardiovascular status; management should only be carried out under medical supervision.
Storage Conditions
Store at room temperature (below 30°C), away from light and moisture. Keep out of reach of children.
Use In Special Populations
- Pediatric patients: Safety and efficacy of Lomir in children have not been established; use in this population is generally not recommended.
- Elderly patients: Older patients may show a greater blood pressure response to Lomir; a lower starting dose and careful monitoring are advised.
- Hepatic impairment: Requires dose reduction and careful monitoring due to extensive hepatic metabolism of Lomir (see Precautions and Warnings).
- Renal impairment: No specific dose adjustment generally required, though blood pressure should be monitored.
Duration Of Treatment
Lomir is typically used as a long-term, ongoing therapy for chronic management of hypertension. Duration of treatment should be determined by the prescribing physician based on blood pressure control and response, and treatment should not be stopped or altered without medical advice.
Drug Classes
Calcium Channel Blocker (Dihydropyridine class); Antihypertensive Agent
Mode Of Action
Isradipine blocks the influx of calcium ions through L-type calcium channels in vascular smooth muscle cells, causing relaxation of arterial smooth muscle and vasodilation, which reduces peripheral vascular resistance and lowers blood pressure.
Pregnancy
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Pediatric Uses
Safety and efficacy of Lomir have not been established in pediatric patients. Lomir is generally not recommended for use in children, and its use should be avoided in this population unless specifically directed by a specialist physician.
Frequently Asked Questions
Q: What is Lomir 2.5 mg Tablet used for?
A: Lomir 2.5 mg Tablet is used to treat high blood pressure (hypertension). It can be used alone or together with another antihypertensive medicine such as a diuretic.
Q: How should I take Lomir 2.5 mg Tablet?
A: Lomir 2.5 mg Tablet should be taken exactly as prescribed by your physician, at the same time(s) each day, with or without food. Controlled-release tablets should be swallowed whole and not crushed or chewed. Do not stop taking Lomir 2.5 mg Tablet suddenly without consulting your doctor.
Q: What are the common side effects of Lomir 2.5 mg Tablet?
A: Common side effects include swelling of the ankles or feet, headache, dizziness, flushing, palpitations, and fatigue. Contact your physician if side effects are severe or persistent.
Q: Can Lomir 2.5 mg Tablet be used during pregnancy or breastfeeding?
A: The safety of Lomir 2.5 mg Tablet in pregnancy has not been well established, so it should be used only if clearly needed and if the benefit outweighs the potential risk to the baby. It is also not known whether Lomir 2.5 mg Tablet passes into breast milk. Always consult your physician before using Lomir 2.5 mg Tablet during pregnancy or while breastfeeding.
Q: Who should not take Lomir 2.5 mg Tablet?
A: Lomir 2.5 mg Tablet should not be taken by anyone with a known hypersensitivity (allergy) to Lomir 2.5 mg Tablet or any of its ingredients.
Q: What should I do if I take too much Lomir 2.5 mg Tablet?
A: An overdose of Lomir 2.5 mg Tablet can cause a serious drop in blood pressure and changes in heart rate. Seek immediate medical attention or contact emergency services/poison control right away if an overdose is suspected.
Disclaimer
The information provided is accurate to the best of our knowledge, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy, and the absence of specific information about a drug should not be taken as an endorsement. We are not responsible for any consequences arising from this information, so please consult a healthcare professional for any concerns or questions.