Horsetail, also known as Equisetum arvense in the scientific community, is a perennial herb that grows in sandy soil in parts of Europe, Asia, and North America.1 It’s a non-flowering weed similar to the fern but with hollow stems and shoots. The plant has been used as a herbal remedy as far back as the ancient Greek and Roman times. During these times, it was used to treat tuberculosis, kidney problems, and ulcers as well as to stop bleeding. It is still used in herbal medicine today in both fresh and dried forms.2
Horsetail Uses and Health Benefits
Among horsetail benefits, it acts as a diuretic and contains antioxidant properties, which may inhibit cancer cell growth.2 Most
Horsetail Side Effects and Precautions
Talk to your doctor before taking a horsetail supplement as it may lead to horsetail side effects and interactions. Among horsetail side effects, it can break down the vitamin thiamine and lead to a thiamine deficiency when taken long-term. Do not take horsetail if you are pregnant or breastfeeding, suffer from alcoholism, have diabetes or gout, or have known deficiencies in thiamine or potassium.2,4
Tell your doctor about any prescription medications you’re taking before starting a horsetail herbal remedy. Due to its diuretic effects, the herb may interact with anticoagulants and medications like phenytoin
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