Horsetail - Famvir (Famciclovir) Interaction
Herbal: Horsetail
Also Known As: Equisetum arvense, Alligator Cane, Asprêle, Bottle Brush, Cavalinha, Coda Cavallina, Cola de Caballo, Common Horsetail, Corn Horsetail, Dutch Rushes, Equiseti Herba, Field Horsetail, Fleshy Grass-Tail, Giant Horsetail, Great Horsetail, Herba Equiseti, Herbe à Récurer, Hor
Drug: Famciclovir
Brand names:
Famvir
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
Apr 13, 2024
Interaction Details
There were no interactions found between Famciclovir and Horsetail. 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.
Horsetail Overview
Horsetail, also known as equisetum, is a type of perennial herb that belongs to the Equisetaceae family. It is native to much of the Northern Hemisphere and has distinctive, jointed stems that resemble the tail of a horse, hence common name. Some species of horsetail are used medicinally and have been traditionally used to treat a range of ailments, including kidney and bladder problems, wounds, and hair loss. It is most commonly used in traditional medicine as an oral diuretic (i.e., water pill) for the treatment of edema. It is important to note that some species of horsetail (e.g., Equisetum palustre) may be toxic and should not be consumed. Additionally, some types of horsetail contain thiaminase, which can cause thiamine deficiency with prolonged use.
Famciclovir Overview
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Famciclovir is used to treat herpes zoster (shingles; a rash that can occur in people who have had chickenpox in the past). It is also used to treat repeat outbreaks of herpes virus cold sores or fever blisters in people with a normal immune system. Famciclovir is used to treat repeat outbreaks and to prevent further outbreaks of genital herpes (a herpes virus infection that causes sores to form around the genitals and rectum from time to time) in people with a normal immune system. Famciclovir is also used to treat returning herpes simplex infections of the skin and mucus membranes (mouth, anus) in people with human immunodeficiency virus (HIV) infection. Famciclovir is in a class of medications called antivirals. It works by stopping the spread of the herpes virus in the body. Famciclovir does not cure herpes infections and may not stop the spread of herpes virus to other people. However, it may decrease the symptoms of pain, burning, tingling, tenderness, and itching; help sores to heal; and prevent new sores from forming.
Horsetail - More Interactions
Horsetail interacts with 185 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.
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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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