The chemicals in horsetail might have antioxidant and anti-inflammatory effects. They might also work like "water pills" (diuretics) and increase urination.
People use horsetail for fluid retention, urinary tract infections (UTIs), osteoporosis, loss of bladder control, and many other conditions, but there is no good scientific evidence to support these uses.
Uses & Effectiveness
We currently have no information for HORSETAIL overview.
When applied to the skin: There isn't enough reliable information to know if horsetail is safe or what the side effects might be.
Special Precautions and Warnings
When applied to the skin: There isn't enough reliable information to know if horsetail is safe or what the side effects might be. Pregnancy and breast-feeding: There isn't enough reliable information to know if horsetail is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.
Alcohol use disorder: People with this condition are generally also thiamine deficient. Taking horsetail might make thiamine deficiency worse.
Allergies to carrots and nicotine: Some people with allergy to carrot might also have allergy to horsetail. Horsetail also contains small amounts of nicotine. People with nicotine allergy might have an allergic reaction to horsetail.
Low potassium levels (hypokalemia): Horsetail might lower potassium levels in the blood. Until more is known, use horsetail with caution if you are at risk for potassium deficiency.
Low thiamine levels (thiamine deficiency): Taking horsetail might make thiamine deficiency worse.
Lithium interacts with HORSETAIL
Taking horsetail might decrease how well the body gets rid of lithium. This could increase how much lithium is in the body and result in serious side effects. Talk with your healthcare provider before using this product if you are taking lithium. Your lithium dose might need to be changed.
Medications for diabetes (Antidiabetes drugs) interacts with HORSETAIL
Horsetail might lower blood sugar levels. Taking horsetail along with diabetes medications might cause blood sugar to drop too low. Monitor your blood sugar closely.
Water pills (Diuretic drugs) interacts with HORSETAIL
Horsetail can decrease potassium levels. "Water pills" can also decrease potassium levels. Taking horsetail along with "water pills" might make potassium levels drop too low.
Efavirenz (Sustiva) interacts with HORSETAIL
Efavirenz is a drug used to treat HIV. Taking horsetail with efavirenz might reduce the effects of efavirenz. Talk with your healthcare provider before using horsetail if you are taking efavirenz.
Medications for HIV/AIDS (Nucleoside reverse transcriptase inhibitors (NRTIs)) interacts with HORSETAIL
Taking horsetail with NRTIs might reduce the effects of these drugs. Talk with your healthcare provider before using horsetail if you are taking an NRTI.
Be cautious with this combination
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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.
This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version.
© Therapeutic Research Faculty 2020.