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	Search Quick Order Form» Departments Vitamins Minerals Supplements Herbs Home & Grocery Diet & Fitness Body & Bath More Ways to Shop Brands A-Z Natural Remedies Children & Infants Women's Health Men's Health Seniors Free Catalog MotherNature.com's Catalog Is Here! Click Here to Get Your Free Copy Today. Newsletter Sign Up Weekly health news, sale announcements and coupons!		Library Home > Safetychecker by Drug Name > Labetalol LABETALOL Introduction Safetychecker summary Vitamin interactions Herb interactions Food interactions References Visit The Healthy Living Bookshelf: 21 Online Health Books From Rodale Labetalol is used to treat high blood pressure. Safetychecker Summary for Labetalol (for details about the summarized interactions, read the full article) May be Beneficial: Supportive interaction—Taking these supplements may support or otherwise help your medication work better. Food Avoid: Adverse interaction—Avoid these supplements when taking this medication because taking them together may cause undesirable or dangerous results. Potassium High-potassium foods* Pleurisy root* Depletion or interference None known Side effect reduction/prevention None known Reduced drug absorption/bioavailability None known Interaction with Dietary Supplements Potassium Three kidney transplant patients developed hyperkalemia (high blood potassium levels), a potentially dangerous condition, following intravenous administration of labetalol.1 Additional research is needed to determine whether taking oral labetalol together with potassium supplements might also lead to elevated blood levels of potassium. However, some other beta-blockers (called “nonselective” beta-blockers) are known to decrease the uptake of potassium from the blood into the cells,2 leading to hyperkalemia.3 People taking beta-blockers should therefore avoid taking potassium supplements, or eating large quantities of fruit (e.g., bananas), unless directed to do so by their doctor. Interactions with Herbs Pleurisy root As pleurisy root and other plants in the Aesclepius genus contain cardiac glycosides, it is best to avoid use of pleurisy root with heart medications such as beta-blockers.4 Interaction with Food and Other Compounds Food Taking labetalol with food greatly increases the absorption of the drug.5 Therefore, labetalol should be taken with a meal. References: 1. Arthur S, Greenberg A. Hyperkalemia associated with intravenous labetalol therapy for acute hypertension in renal transplant recipients. Clin Nephrol 1990;33:269–71. 2. Rosa RM, Silva P, Young JB, et al. Adrenergic modulation of extrarenal potassium disposal. N Engl J Med 1980;302:431–4. 3. Lundborg P. The effect of adrenergic blockade on potassium concentrations in different conditions. Acta Med Scand Suppl 1983;672:121–6 [review]. 4. Newall CA, Anderson LA, Phillipson JD. Herbal Medicines: A Guide for Health-Care Professionals. London: Pharmaceutical Press, 1996, 213–4. 5. Daneshmend TK, Roberts CJ. the influence of food on the oral and intravenous pharmacokinetics of a high clearance drug: a study with labetalol. Br J Clin Pharmacol 1982;14:73–8. Copyright © 2002 Healthnotes, Inc.  All rights reserved. www.healthnotes.com Please read the disclaimer about the limitations of the information provided here. Do NOT rely solely on the information in this article. Learn more about Healthnotes, the company. Learn more about the authors of Safetychecker. The information presented in Healthnotes is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over-the-counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires December 2003.

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