Interaction Details

There were no interactions found between Caffeine, Diphenhydramine, Ergotamine (prescription drug) and Lily-of-the-valley. This does not mean the potential for an interaction does not exist, however. There is often a lack of studies and data surrounding traditional medicine, especially concerning drug interactions, so it is important to always consult your provider before making any changes to your medication regimen.


Still looking for more information about combining Caffeine, Diphenhydramine, Ergotamine (prescription drug) and Lily-of-the-valley? Ask Dr. Brian Staiger about it by contacting him directly.

Lily-of-the-valley Overview

Lily-of-the-valley Lily of the valley (Convallaria majalis) is a small, herbaceous plant that is native to Europe and Asia and is known for its bell-shaped flowers and its red berries, which grow in the summer and fall. It is a popular ornamental plant. Lily of the valley has been traditionally used for cardiovascular conditions but is not recommended due to safety concerns. It contains cardiac glycosides, similar to digoxin, which are extremely poisonous if used incorrectly. Lily of the valley gained popular notoriety from the television show 'Breaking Bad' in the United States as the plant used by Walter White to poison another individual.
See More Information Regarding Lily-of-the-valley

Lily-of-the-valley - More Interactions

Lily-of-the-valley interacts with 157 drugs

Interaction Rating Key

These severity listings are for informational use only. Never start, stop or otherwise change your therapy before speaking with your provider.

Major The combined use of these agents is strongly discouraged as serious side effects or other negative outcomes could occur.
Moderate Use cautiously under the care of a healthcare professional or avoid this combination. A significant interaction or negative outcome could occur.
Minor Be aware that there is a chance of an interaction. Watch for warning signs of a potential interaction.
Unknown No interactions have been reported or no interaction data is currently available.

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Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Drug descriptions are provided by MedlinePlus.

Ask A Pharmacist About Your Herbal Questions!

Dr. Brian Staiger, PharmD

In addition to being a clinical pharmacist specializing in pharmacotherapy, Dr. Brian Staiger is a registered herbalist through the American Herbalist Guild. He has combined his passion for pharmacy practice with the study of medical ethnobotany to improve patient care. Feel free to reach out about any of your herbal or medication questions!

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