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Bugleweed (Lycopus virginicus) is a North American mint-family perennial found in damp soils and wetlands. It should not be confused with Ajuga species, which are also commonly called bugleweed.
Identification
The plant has square stems, opposite toothed leaves, and small pale flowers clustered at the leaf axils. Like many mint-family plants, it prefers moist ground.
Traditional Use
American and European herbal traditions used Lycopus species in preparations associated with palpitations, cough, nervousness, and symptoms historically interpreted as excessive thyroid activity. These are traditional uses, not instructions for treating thyroid disease.
Research Context
Laboratory and limited clinical research has explored effects on thyroid-related pathways and cardiovascular symptoms, but evidence is not strong enough to support self-treatment of hyperthyroidism or arrhythmias.
Safety & Interactions
Bugleweed may influence thyroid function and should not be used casually by people with thyroid disease or by those taking thyroid medication. It may also affect heart rate and interact with other therapies. Pregnancy and breastfeeding use are generally avoided because adequate safety data are lacking.
Botanical Name Matters
Because “bugleweed” is applied to unrelated plants, products should be identified by botanical name before medicinal use.
Educational information only.