Also indexed as: Compazine
Prochlorperazine is used to treat severe nausea and vomiting. It is also used to treat symptoms of psychosis, such as delusions, hallucinations, disorganized thinking and speech, and bizarre behavior. Prochlorperazine is in a class of drugs known as phenothiazines.
Summary of Interactions with Vitamins, Herbs, and Foods
In some cases, an 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.
 Avoid: Reduced drug absorption/bioavailability—Avoid these supplements when taking this medication since the supplement may decrease the absorption and/or activity of the medication in the body. |
Antacids
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| Avoid: Adverse interaction—Avoid these supplements when taking this medication because taking them together may cause undesirable or dangerous results. |
Alcohol
Bacopa
Lithium (prescription)
Lithium (supplements)
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| Depletion or interference |
None known
|
| Side effect reduction/prevention |
None known
|
| Supportive interaction |
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
Lithium
Lithium is a mineral that may be present in some supplements and is also used in large amounts to treat mood disorders, such as bipolar disorder. Taking lithium at the same time as phenothiazines may result in drug side effects such as disorientation and unconsciousness.1 Though no studies have investigated whether the small amount of lithium available in supplements might interact with prochlorperazine to cause similar effects, people taking the drug should exercise caution when supplementing with lithium.
Interactions with Herbs
Bacopa
An animal study found that the effects of chlorpromazine, a drug similar to (perphenazine, prochlorperazine, thioridazine), were enhanced when a bacopa extract was given along with it.2 Until more is known, people taking medications from this family of drugs (called phenothiazines) should not take bacopa.
Interactions with Foods and Other Compounds
Alcohol
Taking prochlorperazine may increase or prolong the effects of alcohol, such as drowsiness, dizziness, and poor coordination.3 Therefore, people taking prochlorperazine should avoid drinking alcohol, especially when they must stay alert.
Antacids
Many antacid products contain aluminum hydroxide, which reduces the absorption of phenothiazine drugs.4 Though no studies are available that confirm an interaction between prochloroperazine and antacids, people who are using antacids should take them an hour before or two hours after the drug.
References
1. Burnham TH, ed. Central Nervous System Agents, Antipsychotic Agents. In Drug Facts and Comparisons. St. Louis, MO: Facts and Comparisons, 2001, 945–65.
2. Ganguly DK, Malhotra CL. Some behavioral effects of an active fraction from Herpestis monniera Linn. (Brahmi). Indian J Med Res 1967;55:473–82.
3. Sifton DW, et. Physicians’ Desk Reference. Montvale, NJ: Medical Economics Company, Inc., 2000, 2986–8.
4. Burnham TH, ed. Central Nervous System Agents, Antipsychotic Agents. In Drug Facts and Comparisons. St. Louis, MO: Facts and Comparisons, 2001, 945–65.
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Learn more about the authors of Using Medicines with Vitamins and Herbs
The information presented in Aisle7 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 February 2010.
2009-01-21
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