Drug

Diazepam

Common brand names:

Diastat, Valium

Benzodiazepines are a family of drugs used to treat insomnia, anxiety, panic attacks, muscle spasms, and seizure disorders.

Summary of Interactions with Vitamins, Herbs, & Foods

  • Negative Interactions

    2
    • Diazepam

      Kava

      Potential Negative Interaction

      Kava (Piper methysticum) is an herb used to treat anxiety disorder. One individual who took a benzodiazepine (alprazolam) and kava together, along with two other medications (cimetidine and terazosin) was hospitalized in a lethargic and disoriented condition.2 Further research is needed to determine whether the combination of kava and benzodiazepines produces an adverse interaction. However, individuals should not take benzodiazepines and kava together unless supervised by a doctor.

    • Diazepam

      St. John’s Wort

      Potential Negative Interaction

      In a study of healthy volunteers, administration of St. John's wort (Hypericum perforatum) along with alprazolam decreased blood levels of alprazolam, compared with the levels when alprazolam was taken by itself.3 Individuals taking alprazolam should not take St. John's wort without supervision by a doctor.

  • Supportive Interactions

    2
    • Diazepam

      Copper and Zinc

      Replenish Depleted Nutrients

      This interaction is based on this drug belonging to a drug class. While this drug may differ from the text and references below, drugs within this class work in a similar way and this interaction is applicable to drugs within the same class.

      In various studies of children treated with valproic acid for epilepsy compared with control groups, serum zinc levels remained normal or decreased, serum copper levels remained normal or decreased, and red blood cell zinc levels were decreased. The importance of these changes and how frequently they occur remain unclear.

      Copper and Zinc
      Diazepam
      ×
      1. Kaji M, Ito M, Okuno T, et al. Serum copper and zinc levels in epileptic children with valproate treatment. Epilepsia 1992;33:555-7.
      2. Lerman-Sagie T, Statter M, Szabo G, Lerman P. Effect of valproic acid therapy on zinc metabolism in children with primary epilepsy. Clin Neuropharmacol 1987;10:80-6.
      3. Sozuer DT, Barutcu UB, Karakoc Y, et al. The effects of antiepileptic drugs on serum zinc and copper levels in children. J Basic Clin Physiol Pharmacol 1995;6:265-9.
    • Diazepam

      Vinpocetine

      Support Medicine

      In a preliminary trial, an extract of periwinkle called vinpocetine was shown to produce minor improvements in short-term memory among people taking flunitrazepam, a benzodiazepine. Further study is needed to determine if vinpocetine would be a helpful adjunct to use of benzodiazepines.

      Vinpocetine
      Diazepam
      ×
      1. Bhatti JZ, Hindmarch I. Vinpocetine effects on cognitive impairments produced by flunitrazepam. Int Clin Psychopharmacol 1987;2:325-31.
The Drug-Nutrient Interactions table may not include every possible interaction. Taking medicines with meals, on an empty stomach, or with alcohol may influence their effects. For details, refer to the manufacturers’ package information as these are not covered in this table. If you take medications, always discuss the potential risks and benefits of adding a new supplement with your doctor or pharmacist.

Copyright © 2025 TraceGains, Inc. All rights reserved.

RxAnswers™ is a copyrighted product from TraceGains.

This information is intended only for residents of the United States. Products sold under the same brand names in other countries may contain different ingredients.

There are some limitations on the information provided in “Nutrient Interactions.” Do NOT rely solely on the information in this article. Please read the disclaimer.

Learn more about TraceGains, the company.

Learn more about the authors of RxAnswers.

TraceGains and/or its suppliers make no warranties or representations as to the accuracy or completeness of this content herein or that of any organization referred or linked to within this content and will not be liable for any damages arising out of your access to or use of any information found herein or that of any organization referred to within this content.

Information expires December 2025.