Lisinopril | Health Notes at WWSM | Health Information at WWSM

Lisinopril

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Also indexed as: Apo-Lisinopril, Carace, Prinivil, Zestril

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Combination drugs: Carace Plus, Prinzide, Zestoretic

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.

Summary of Interactions with Vitamins, Herbs, and Foods
In some cases, a herb or supplement may appear in more than one category, which may seem contradictory. For clarification, read the full article for details about the summarized interactions.

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.	High-potassium foods* Potassium supplements* Salt substitutes*
Side effect reduction/prevention	None known
Supportive interaction	None known
Reduced drug absorption/bioavailability	None known

An asterisk (*) next to an item in the summary indicates that the interaction is supported only by weak, fragmentary, and/or contradictory scientific evidence.

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 doctor 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

References
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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 chemist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires September 2008.

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Interactions with Dietary Supplements

Interactions with Foods and Other Compounds