Nizatidine

Also indexed as: Apo-Nizatidine, Axid, Axid AR, Zinga

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Nizatidine is a member of the H-2 blocker (histamine blocker) family of drugs that prevents the release of acid into the stomach. Nizatidine is used to treat stomach and duodenal ulcers and reflux of stomach acid into the oesophagus. Nizatidine is available as the prescription drug and as a non-prescription product for relief of heartburn, acid indigestion, and sour stomach.

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.

Beneficial 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.

Folic acid

Iron*

Vitamin B12
Avoid Avoid: Adverse interaction—Avoid these supplements when taking this medication because taking them together may cause undesirable or dangerous results.

Tobacco
Check Check: Other—Before taking any of these supplements or eating any of these foods with your medication, read this article in full for details.

Copper

Folic acid

Magnesium
Side effect reduction/prevention

None known
Supportive interaction

None known
Reduced drug absorption/bioavailability

None known
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An asterisk (*) next to an item in the summary indicates that the interaction is supported only by weak, fragmentary, and/or contradictory scientific evidence.

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Interactions with Dietary Supplements

Folic acid
Folic acid is needed by the body to utilise vitamin B12. Antacids, including nizatidine, inhibit folic acid absorption.1 People taking antacids are advised to supplement with folic acid.

Iron
Stomach acid may increase absorption of iron from food. H-2 blocker drugs reduce stomach acid and are associated with decreased dietary iron absorption.2 The iron found in supplements is available to the body without the need for stomach acid. People with ulcers may be iron deficient due to blood loss. If iron deficiency is present, iron supplementation may be beneficial. Iron levels in the blood can be checked with lab tests.

Magnesium-containing antacids
In healthy people, a magnesium hydroxide/aluminium hydroxide antacid, taken with nizatidine, decreased nizatidine absorption by 12%.3 People can avoid this interaction by taking nizatidine two hours before or after any aluminium/magnesium-containing antacids. Some magnesium supplements such as magnesium hydroxide are also antacids.

Vitamin B12
Stomach acid is needed for vitamin B12 in food to be absorbed by the body. H-2 blocker drugs reduce stomach acid and may therefore inhibit absorption of the vitamin B12 naturally present in food. However, the vitamin B12 found in supplements does not depend on stomach acid for absorption.4 Lab tests can determine vitamin B12 levels in people.

Other vitamins and minerals
There is some evidence that other vitamins and minerals, such as folic acid5 and copper,6 require the presence of stomach acid for optimal absorption. Long-term use of H-2 blockers may therefore promote a deficiency of these nutrients. Individuals requiring long-term use of H-2 blockers may therefore benefit from a multiple vitamin/mineral supplement.

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Interactions with Foods and Other Compounds

Food
To prevent heartburn after meals, nizatidine is best taken 30 minutes before meals.7 For other conditions, nizatidine works best taken with an early evening meal.8

Tobacco
In a randomised, double-blind, one-year study of 513 patients with recently healed duodenal ulcers, smokers were found to have a significantly higher recurrence rate than nonsmokers during maintenance therapy with nizatidine.9

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References
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