Ashwagandha - Fosamax (Alendronate) Interaction
Herbal: Ashwagandha
Also Known As: Withania somnifera, Ajagandha, Amangura, Asan, Asana, Asgand, Asgandh, Asgandha, Ashagandha, Ashvagandha, Ashwaganda, Ashwanga, Asoda, Asundha, Aswagandha, Avarada, Ayurvedic Ginseng, Cerise d'Hiver, Clustered Wintercherry, Ghoda Asoda
Drug: Alendronate
Brand names:
Fosamax

Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 25, 2025
Interaction Details
There were no interactions found between Alendronate and Ashwagandha. 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.
Pharmacist Analysis
The use of ashwagandha may result in potential interactions with certain classes of medication due to its known effects. However, these interactions are generally considered to be of minimal clinical significance.
Nevertheless, it is recommended to exercise caution when using ashwagandha in conjunction with the following classes of drugs:
- Antidiabetes
- Antihypertensives
- Benzodiazepines
- CNS Depressants
- Immunosuppressant
- Thyroid Hormones
Although ashwagandha can typically be used safely in combination with these drug classes, it is crucial to inform your healthcare provider of all medications and supplements you are taking to ensure proper monitoring. Based on available information, ashwagandha does not appear to cause any adverse interactions with the specific drug mentioned in this inquiry.
Ashwagandha With Fosamax (Alendronate) - Additional Details

There is currently no known interaction between ashwagandha and Fosamax, as noted above.
This is likely because both substances work on different pathways in the body and the fact that ashwagandha doesn't appear to affect Fosamax metabolism.
However, it is important to note that Fosamax has administration instructions that need to be followed in order for the drug to be optimally absorbed.
Fosamax should be taken on an empty stomach, at least 30 minutes before food and other medications (including herbal medications, like ashwagandha).
So, while there is no direct drug interaction between Fosamax and ashwagandha, be sure to separate their administration by the recommended amount of time.
- Dr. Brian Staiger, PharmDAshwagandha Overview

Alendronate Overview
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Alendronate is used to treat and prevent osteoporosis (a condition in which the bones become thin and weak and break easily) in women who have undergone menopause (''change of life,'' end of menstrual periods) and to treat osteoporosis in men. Alendronate is also used to treat osteoporosis in men and women who are taking corticosteroids (a type of medication that may cause osteoporosis in some patients). Alendronate is also used to treat Paget's disease of bone (a condition in which the bones are soft and weak and may be deformed, painful, or easily broken). Alendronate is in a class of medications called bisphosphonates. It works by preventing bone breakdown and increasing bone density (thickness).
Ashwagandha - More Interactions
Ashwagandha interacts with 1326 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.