LISINOPRIL

Visit The Healthy Living Bookshelf:

21 Online Health Books From Rodale

Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor, a family of drugs used to treat high blood pressure and some types of heart failure. Lisinopril is also used in some cases to improve survival after a heart attack.

Safetychecker Summary for Lisinopril
(for details about the summarized interactions, read the full article)

May be Beneficial: Depletion or interference—The medication may deplete or interfere with the absorption or function of the nutrient. Taking these nutrients may help replenish them.	Zinc*
Avoid: Adverse interaction—Avoid these supplements when taking this medication because taking them together may cause undesirable or dangerous results.	Potassium supplements* High-potassium foods* Salt substitutes*
Side effect reduction/prevention	None known
Supportive interaction	None known
Reduced drug absorption/bioavailability	None known

Interactions with Dietary Supplements

Potassium
An uncommon yet potentially serious side effect of taking ACE inhibitors is increased blood potassium levels.^{1 2 3} This problem is more likely to occur in people with advanced kidney disease. Taking potassium supplements,⁴ potassium-containing salt substitutes (No Salt®, Morton Salt Substitute®, and others),^{5 6 7} or large amounts of high-potassium foods at the same time as ACE inhibitors could cause life-threatening problems.⁸ Therefore, people should consult their healthcare practitioner before supplementing additional potassium and should have their blood levels of potassium checked periodically while taking ACE inhibitors.

Zinc
In a study of 34 people with hypertension, six months of captopril or enalapril (ACE inhibitors related to lisinopril) treatment led to decreased zinc levels in certain white blood cells,⁹ raising concerns about possible ACE inhibitor–induced zinc depletion.

While zinc depletion has not been reported with lisinopril, until more is known, it makes sense for people taking lisinopril long term to consider, as a precaution, taking a zinc supplement or a multimineral tablet containing zinc. (Such multiminerals usually contain no more than 99 mg of potassium, probably not enough to trigger the above-mentioned interaction.) Supplements containing zinc should also contain copper, to protect against a zinc-induced copper deficiency.

Interactions with Foods and Other Compounds

Food
Lisinopril may be taken with or without food.¹⁰

1. Good CB, McDermott L, McCloskey B. Diet and serum potassium in patients on ACE inhibitors. JAMA 1995;274:538.

2. Rush JE, Merrill DD. The Safety and tolerability of lisinopril in clinical trials. J Cardiovasc Pharmacol 1987;9(Suppl 3):S99–107.

3. Sifton DW, ed. Physicians’ Desk Reference. Montvale, NJ: Medical Economics Company, Inc., 2000, 1965–8.

4. Burnakis TG, Mioduch HJ. Combined therapy with captopril and potassium supplementation. A potential for hyperkalemia. Arch Intern Med 1984;144:2371–2.

5. Burnakis TG. Captopril and increased serum potassium levels. JAMA 1984;252:1682–3 [letter].

6. Ray K, Dorman S, Watson R. Severe hyperkalemia due to the concomitant use of salt substitutes and ACE inhibitors in hypertension: a potentially life threatening interaction. J Hum Hypertens 1999;13:717–20.

7. Sifton DW, ed. Physicians’ Desk Reference. Montvale, NJ: Medical Economics Company, Inc., 2000, 1965–8.

8. Stoltz ML. Severe hyperkalemia during very-low-calorie diets and angiotensin converting enzyme use. JAMA 1990;264:2737–8 [letter].

9. Golik A, Zaidenstein R, Dishi V, et al. Effects of captopril and enalapril on zinc metabolism in hypertensive patients. J Am Coll Nutr 1998;17:75–8.

10. Mojaverian P, Rocci ML Jr, Vlasses PH, et al. Effect of food on the bioavailability of lisinopril, a nonsulfhydryl angiotensin-converting enzyme inhibitor. J Pharm Sci 1986;75:395–7.

---

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.

---

• Ways to Shop
• Track Your Orders
• Quick Re-order

• Shipping Costs & Times
• Return Policy

• Help Desk
• Contact Us

• Join our Affiliate Network
• Corporate Discounts
• Gift Certificates