Black tongue may be physiological or pathological, physiological manifestations do not require treatment, while pathological need to choose medication according to the type of evidence.
If the black tongue coating is caused by eating certain colorful foods, such as chocolate, it is a physiological phenomenon and does not need to be treated, but can be recovered on its own.
If there are certain pathological manifestations, such as dark and dry tongue coating, it suggests that heat is extreme and injures the body’s fluids, so it needs to be treated with heat-clearing and fluids-generating medicines, such as dendrobium, maitong, and yuzhu.
If the moss is dark and moist, it is mostly considered to be Yang deficiency, cold and dampness, and can be treated with medicines such as Radix Polygoni Multiflori, Poria, Semen Coicis, Radix Astragali, Radix et Rhizoma Drynariae, and so on.
Specific identification and use of drugs should consult a doctor’s opinion, the emergence of maladaptation timely medical treatment, so as to avoid delaying the condition.