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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Brand Name
Labetalol Hcl In Dextrose
Generic Name
Labetalol Hydrochloride
Active Ingredient
LabetalolCategory
beta-Adrenergic Blocker [EPC]
Salt Form
Hydrochloride
Variants
1
Different strengths and dosage forms
| Strength | Form | Route | NDC |
|---|---|---|---|
| 1 mg/mL | INJECTION | INTRAVENOUS | 0143-9366 |
Detailed information about Labetalol Hcl In Dextrose
This page is for informational purposes only and does not replace medical advice. Before using any prescription or over-the-counter medication for Labetalol Hcl In Dextrose, you must consult a qualified healthcare professional.
Labetalol is a unique dual-action adrenergic receptor blocker used to manage hypertension. It combines alpha- and beta-blocking activity to reduce blood pressure while maintaining cardiac output, making it a cornerstone in treating both chronic and emergency hypertensive conditions.
Dosage for Labetalol must be individualized by a healthcare professional based on the patient's blood pressure response and tolerance.
Labetalol is not currently FDA-approved for use in pediatric patients. While some specialists may use it "off-label" for children with severe hypertension, safety and effectiveness in this population have not been established through large-scale clinical trials. Dosing in children, if performed, is strictly calculated based on body weight (mg/kg) and must be managed by a pediatric cardiologist or nephrologist.
Unlike many other cardiovascular drugs, Labetalol does not typically require significant dosage adjustments in patients with kidney disease, as it is primarily metabolized by the liver. However, clinicians still monitor these patients closely for overall drug tolerance.
Because the liver is the primary site for Labetalol metabolism, patients with liver cirrhosis or impaired hepatic function may require lower doses. The "first-pass" metabolism is reduced in these patients, leading to higher levels of the drug in the bloodstream.
Older adults are often more sensitive to the effects of Labetalol. Healthcare providers typically start elderly patients on the lowest possible dose and titrate upward very slowly to prevent excessive dizziness or falls.
If you miss a dose, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and return to your regular schedule. Never double the dose to make up for a missed one, as this can cause a dangerous drop in blood pressure or heart rate.
An overdose of Labetalol is a medical emergency. Signs of overdose include:
If an overdose is suspected, contact emergency services or a poison control center immediately. Treatment usually involves supportive care, such as IV fluids and medications like atropine or glucagon to restore heart rate and blood pressure.
> Important: Follow your healthcare provider's dosing instructions precisely. Do not adjust your dose or stop taking this medication without direct medical guidance, as sudden discontinuation can lead to severe cardiovascular complications.
Most patients tolerate Labetalol well, but some side effects are common as the body adjusts to the medication. These often diminish over time:
> Warning: Stop taking Labetalol and call your doctor immediately or seek emergency care if you experience any of the following:
With prolonged use, some patients may notice persistent fatigue or a decreased ability to perform high-intensity exercise, as the beta-blockade limits the heart's ability to increase its rate in response to exertion. Long-term use generally does not lead to significant metabolic issues (like changes in cholesterol), which is an advantage over some older beta-blockers. However, regular monitoring of liver function and blood pressure is necessary for those on long-term therapy.
No FDA black box warnings currently exist for Labetalol. However, it carries a strong "precautions" warning regarding the abrupt cessation of therapy. Patients with coronary artery disease who suddenly stop taking Labetalol may experience a severe worsening of angina (chest pain), heart attack, or ventricular arrhythmias. If the drug must be stopped, it must be tapered gradually over 1 to 2 weeks under medical supervision.
Report any unusual symptoms to your healthcare provider. Even mild side effects should be discussed, as your doctor may be able to adjust your dose or timing to improve your comfort.
Labetalol is a potent cardiovascular agent that requires careful management. It is essential that patients disclose their full medical history to their healthcare provider. The most critical safety point is that Labetalol should never be stopped abruptly. Doing so can cause a "rebound" effect, where blood pressure spikes to dangerous levels, potentially leading to a heart attack or stroke.
There are no specific FDA black box warnings for Labetalol. However, the clinical community treats the risk of abrupt withdrawal with the same level of seriousness as a boxed warning. Always consult your physician before making any changes to your regimen.
Patients on Labetalol require regular clinical monitoring to ensure the drug is both safe and effective:
Labetalol can cause dizziness, especially during the first few days of treatment or when the dose is increased. Do not drive, operate heavy machinery, or engage in dangerous activities until you know how this medication affects you. To minimize dizziness, rise slowly from a sitting or lying position.
Alcohol should be avoided or strictly limited while taking Labetalol. Alcohol can enhance the blood-pressure-lowering effect of the medication, leading to severe dizziness, fainting, or a dangerously low heart rate.
If Labetalol needs to be discontinued, your doctor will provide a tapering schedule. This typically involves reducing the dose by half every few days over a period of 7 to 14 days. During this time, you should limit physical activity to reduce the strain on your heart.
> Important: Discuss all your medical conditions, especially respiratory or heart issues, with your healthcare provider before starting Labetalol.
While few drugs are strictly contraindicated, Labetalol should not be used with other non-selective beta-blockers, as this can lead to excessive blockade and dangerous bradycardia. Additionally, patients with a known severe allergy to Labetalol or its components must avoid it entirely.
Labetalol can interfere with certain medical tests:
For each major interaction, the mechanism usually involves either pharmacodynamic synergy (two drugs doing the same thing to an extreme) or pharmacokinetic interference (one drug changing how another is absorbed or metabolized). Management typically involves dose adjustment or choosing an alternative medication.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, including over-the-counter cold medicines which often contain stimulants that can raise blood pressure.
Labetalol must NEVER be used in patients with the following conditions, as the risks far outweigh any potential benefits:
In these cases, a healthcare provider must perform a careful risk-benefit analysis:
Patients who have had a severe allergic reaction to other beta-blockers (like propranolol, atenolol, or metoprolol) should use Labetalol with extreme caution, as there is a possibility of cross-sensitivity, although Labetalol's unique chemical structure makes this less common than within other drug classes.
> Important: Your healthcare provider will evaluate your complete medical history, including any history of lung disease or heart rhythm problems, before prescribing Labetalol.
Labetalol is classified as Pregnancy Category C by the FDA. However, it is one of the most widely studied and commonly used antihypertensive agents in pregnancy. The American College of Obstetricians and Gynecologists (ACOG) often recommends Labetalol as a first-line treatment for chronic hypertension in pregnancy and for the management of preeclampsia. While it crosses the placenta, it has not been definitively linked to birth defects. However, infants born to mothers taking Labetalol may experience low blood pressure, slow heart rate, or low blood sugar shortly after birth and should be monitored for 24-48 hours.
Labetalol is excreted into breast milk in very small amounts. The American Academy of Pediatrics considers it generally compatible with breastfeeding. The amount an infant receives is typically less than 1% of the mother's weight-adjusted dose. Nursing infants should still be monitored for signs of beta-blockade, such as unusual sleepiness or slow heart rate, particularly if they were born prematurely or have underlying health issues.
Safety and effectiveness in children have not been established. Use in the pediatric population is considered "off-label" and is usually reserved for severe hypertension that has not responded to other treatments. Pediatric dosing is highly specialized and must be managed by experts.
Clinical studies have shown that elderly patients may have higher plasma levels of Labetalol compared to younger patients. This increases the risk of side effects like dizziness and falls. For this reason, doctors usually start with a 100 mg dose twice daily and monitor the patient's blood pressure while they are both sitting and standing to ensure they are not experiencing a dangerous drop upon rising.
For patients with kidney disease or those on dialysis, Labetalol is generally considered safe because it is not primarily cleared by the kidneys. No specific dose adjustments are typically required based on the Glomerular Filtration Rate (GFR), though clinicians will monitor the patient's overall clinical status.
Patients with liver disease (such as cirrhosis) require significant caution. Because the liver is responsible for the "first-pass" metabolism of Labetalol, impaired liver function can lead to much higher levels of the drug in the body. Lower starting doses and slower titration are mandatory in this population to prevent toxicity.
> Important: Special populations require individualized medical assessment. Always inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding before starting Labetalol.
Labetalol is a unique adrenergic receptor antagonist. Its molecular structure allows it to compete with catecholamines for binding sites at three distinct receptors. It provides competitive inhibition of alpha-1 receptors, which leads to a decrease in peripheral vascular resistance. Simultaneously, it provides non-selective blockade of beta-1 and beta-2 receptors. The beta-1 blockade prevents the heart from beating too fast in response to the alpha-1 induced vasodilation, while the beta-2 blockade is a secondary effect. This "dual-action" ensures that blood pressure drops without a significant change in the heart's output or a dangerous increase in heart rate.
Following oral administration, the blood-pressure-lowering effect typically begins within 20 minutes to 2 hours and reaches its peak in 1 to 4 hours. The duration of action is dose-dependent but generally lasts 8 to 12 hours. With intravenous administration, the effect is much faster, beginning within 2 to 5 minutes and peaking at 5 to 15 minutes.
| Parameter | Value |
|---|---|
| Bioavailability | ~25% (Increased with food) |
| Protein Binding | ~50% |
| Half-life | 6 - 8 hours |
| Tmax (Oral) | 1 - 2 hours |
| Metabolism | Hepatic (Glucuronidation) |
| Excretion | Renal (55-60%), Fecal (trace) |
Labetalol is a combined alpha- and beta-adrenoceptor blocking agent. It is distinct from "pure" beta-blockers like Metoprolol (which is beta-1 selective) or Propranolol (which is non-selective but lacks alpha-blocking activity). This makes it a versatile choice for patients who need aggressive blood pressure control without the side effects of pure vasodilators.
Common questions about Labetalol Hcl In Dextrose
Labetalol is primarily used to treat hypertension, also known as high blood pressure. It is effective for long-term management of chronic hypertension and is also used in hospital settings as an injection for hypertensive emergencies. Additionally, it is a preferred medication for managing high blood pressure during pregnancy, including conditions like preeclampsia. By lowering blood pressure, it helps prevent serious complications such as strokes, heart attacks, and kidney problems. Your healthcare provider may prescribe it alone or alongside other medications like diuretics.
The most common side effects reported by patients taking Labetalol include dizziness, nausea, and fatigue. A very specific and unique side effect is a tingling sensation in the scalp, which is usually temporary and harmless. Some people also experience nasal congestion or a drop in blood pressure when standing up quickly, which can cause lightheadedness. Most of these symptoms are mild and tend to improve as your body becomes accustomed to the medication over several days or weeks. If these effects persist or become bothersome, you should consult your healthcare provider.
It is generally advised to avoid or significantly limit alcohol consumption while taking Labetalol. Alcohol can enhance the blood-pressure-lowering effects of the medication, which may lead to severe dizziness, lightheadedness, or even fainting. This interaction can also cause your heart rate to slow down excessively. Combining the two increases the risk of accidental falls and can interfere with your coordination. Always discuss your alcohol consumption habits with your doctor to ensure your safety while on this medication.
Labetalol is considered one of the safer options for treating high blood pressure during pregnancy and is frequently prescribed by obstetricians. It has been used for decades to manage gestational hypertension and preeclampsia with a well-documented safety record. While it does cross the placenta, it is not typically associated with birth defects. However, because it can affect the baby's heart rate or blood sugar levels, newborns are usually monitored for a short period after birth if the mother was taking Labetalol. Your doctor will weigh the benefits of controlling your blood pressure against any potential risks to the baby.
The time it takes for Labetalol to work depends on how it is administered. When taken as an oral tablet, you may begin to see a reduction in blood pressure within 20 minutes to 2 hours, with the maximum effect occurring between 1 and 4 hours after the dose. If administered intravenously in a hospital setting, the effects are almost immediate, usually starting within 2 to 5 minutes. While the initial effect is quick, it may take several weeks of consistent use to achieve the full therapeutic benefit for chronic blood pressure management. Your doctor will monitor your progress and adjust the dose as needed.
No, you should never stop taking Labetalol suddenly without consulting your doctor. Abruptly discontinuing this medication can cause a dangerous 'rebound' spike in blood pressure and increase the strain on your heart. This can lead to severe chest pain (angina), a heart attack, or an irregular heartbeat, especially in people with underlying heart disease. If the medication needs to be stopped, your healthcare provider will provide a schedule to gradually taper the dose over one to two weeks. Always ensure you have enough medication on hand so you do not miss doses unexpectedly.
If you miss a dose of Labetalol, take it as soon as you remember. However, if it is nearly time for your next scheduled dose, you should skip the missed dose and continue with your regular dosing schedule. Do not take two doses at once to make up for the one you missed, as this can cause your blood pressure or heart rate to drop to unsafe levels. To help you remember your doses, try taking the medication at the same time every day or use a pill organizer or alarm. If you miss multiple doses, contact your healthcare provider for guidance.
Weight gain is not a common direct side effect of Labetalol, but it can occur in some patients, often due to fluid retention (edema). Beta-blockers can also sometimes slow down your metabolism or make you feel more tired, which might lead to reduced physical activity and subsequent weight gain. However, if you notice a sudden or significant increase in weight (such as 3-5 pounds in a single week) along with swelling in your ankles or shortness of breath, you should contact your doctor immediately. These could be signs that your heart is not pumping as efficiently as it should, or that you are developing heart failure.
Labetalol can interact with various other medications, so it is vital to provide your doctor with a complete list of everything you take. It is often safely combined with diuretics (water pills), but combining it with other heart medications like calcium channel blockers or digoxin requires very close monitoring. Some over-the-counter medicines, such as NSAIDs (ibuprofen) or cold and allergy medications containing stimulants, can interfere with Labetalol's ability to lower blood pressure. Your pharmacist can help check for potential interactions between Labetalol and your other prescriptions or supplements. Always check with a professional before starting any new medication.
Yes, Labetalol is widely available as a generic medication, which is typically much more affordable than brand-name versions. The generic version, Labetalol Hydrochloride, is bioequivalent to the brand-name drug (formerly known as Trandate), meaning it contains the same active ingredient and works the same way in the body. Most insurance plans cover the generic form of Labetalol. Whether you take the brand or the generic, the safety precautions and effectiveness remain the same. Consult your pharmacist if you have questions about the specific manufacturer of your generic medication.
Other drugs with the same active ingredient (Labetalol)