Peppermint (Mentha x piperita L.) Dosing and Safety
    
        
        
            
        
        Allergic reactions may occur from using peppermint or menthol by mouth or on the skin, including throat closing (laryngeal spasm), breathing problems (bronchial constriction or asthma symptoms), or skin rash, hives, or contact dermatitis. People with... 
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