Lemon is considered to be one of the adaptogens. It is antifungal, insecticidal, antiseptic, and antimicrobial. It is also a vermifuge, decongestant, febrifuge, and vasoconstrictor. Externally, it can be used to reduce cellulite, acne, and warts. It can be gargled for sore throats or taken internally to promote circulation and reduce the risks of varicose veins, phlebitis, and thrombosis. It is a pancreatic stimulant and lowers blood sugar. It is non-toxic and non-irritating unless used in direct sun when some individuals may exhibit signs of phototoxicity. It combines well with other citrus oils and lavender.