Systematic review2026

A Systematic and Ethnobotanical Review of Ashwagandha's ( Withania Somnifera ) Teratogenic and Abortifacient Potentials

Tallon MJ, Koturbash I, Blum JL

Phytotherapy research : PTR · 4 citations

Review labels

Funding not disclosed

Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.

How it was studied

Design
Systematic review (indexed by PubMed)
Studied in
People, plus animal or lab work
Main outcome
Clinical events such as disease or death

Who paid for it

Funding
Funding not disclosed

Publication

Published
2025-08-31 · Phytother Res · vol. 40 · issue 8 · pp. 4737–4758
Publisher
Wiley
Cited
4 citations · more than 94% of similar papers · 4.5× the field average
Impact
Top 10% most cited in its field
References
71 works
Access
Open access (repository copy) · PUBLIC-DOMAIN
Research areas
Phytochemicals and Medicinal Plants · Medicinal Plants and Neuroprotection · Food Science and Nutritional Studies
Keywords
Withania somnifera, Ethnobotany, Traditional medicine, Pharmacognosy, Biology, Abortifacient, Phytotherapy, Medicinal plants, Medicine, Biological activity, Pregnancy, Alternative medicine, In vitro, Gestation
MeSH
animals, humans, withania, abortifacient agents, plant extracts, teratogens, medicine, ayurvedic, ethnobotany

3 authors

From US

  • Mark J. Tallon · corresponding
  • Igor KoturbashUniversity of Arkansas for Medical Sciences
  • Jason L. BlumNYU Langone Health

Abstract

Withania somnifera (L.) Dunal, commonly known as ashwagandha, has been widely used in Ayurvedic medicine for its adaptogenic properties and therapeutic potential and has been investigated for its benefits related to sleep and stress management by Western medicine. However, concerns regarding its teratogenic and abortifacient effects have emerged following reports from the World Health Organization (WHO) and regulatory bodies. This systematic and ethnobotanical review critically evaluates these claims by assessing ashwagandha's toxicokinetics, toxicodynamics, and available safety data. A comprehensive literature review following PRISMA guidelines was conducted to identify studies on its reproductive toxicity, molecular interactions, and traditional usage. Historical ethnobotanical reports suggest potential abortifacient effects, but citation distortion and lack of primary source validation raise concerns regarding the validity of such claims. Toxicological studies in animal models demonstrate high tolerability, with no significant reproductive toxicity observed at doses relevant to human consumption. Human clinical studies also show no adverse effects on thyroid function, hormonal balance, or reproductive health. Altogether, evidence supporting significant teratogenic or abortifacient activity remains inconclusive. This review highlights the need for standardized, high-quality research addressing fertility and developmental outcomes in controlled conditions. Given the widespread use of ashwagandha as a dietary supplement ingredient and traditional medicine, a balanced and evidence-based approach is required to assess its safety, ensuring that regulatory actions are informed by robust scientific data rather than historical speculation.

Abstract via Europe PMC. Copyright remains with the authors or publisher.

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