There are five species of rhinocerus:
African: Ceratotherium simum
- White rhinocerus- 2015 there were 20 000 wild-living animals.
               Diceros bicornis- Black rhinocerus- 2015 around 20 animals.
Asian: Dicerorhinus sumatrensis- Sumatran- less than 100 animals remain.
            Rhinoceros unicornis- Indian- 2015 around 650 animals
            Rhinoceros sondaicus- Javan- 58-68 remaining in Ujung Kulan National Park in Java, Indonesia.
Rhinoceros unicornis Indian Rhinocerus Family: Rhinocerotidae 
 Xī jiăo
Rhinoceros horn
The use of rhinocerus horn is not recommended due to the lack of appropriate farming of rhinocerus and dwindling numbers. Substitutes include Bubalus bubalis- Water buffalo horn and Saigo tatarica- Saiga antelope horn.
Nature: Cold, cool     FLAVOR: Bitter, sour, salty  CHANNEL: Heart, Liver, Stomach.
FUNCTIONS- Penetrates body to Blood level and Cools[3]
GROUP: Clearing Internal Heat- Cool Blood
1. Cool Blood.[1,4] Clears fevers.[1]
2. Clears Heat, relieves Fire toxicity.[4] Clears Heat sedates Fire.[3]
3. Stops bleeding.[3] Controls convulsive spasms.[1,3] Clears Heat and arrests tremors.[4]
3. Clears away Heart Fire to achieve tranquillisation of the mind. Strengthening Heart- dilating blood vessels.[3]
4. Removes toxic substances and relieves feverish rashes or eruptions. Detoxifies.[1]
ACTIONS
INDICATIONS- Notice, there is nothing mentioned about rhinocerus horn being an aphrodesiac or a cure for cancer.
1. Acute febrile diseases with Heat invasion of the Heart and Ying system: persistent high fever, unconsciousness and delirium. Heat penetrating into the Heart and Liver, shown as high fever, restlessness, spasm and convulsion. Low grade fevers,[1] restlessness and great thirst,[1] cracked lips and parched tongue,[1] sore throat,[1] fatigue.[1] Meningitis. High fever,[1] with delirium,[1] restlessness,[1] spasms, hot flushes.[3] Loss of consciousness, convulsions, manic behavour and delirium.[4]
2. Heat affecting the Nutritive and Blood level:[4] bleeding due to Blood Heat, such as hematemesis[1,4] and epistaxis.[1,3,4]Hemafecia.[3] Bleeding gums.[3] Erythema, purpura,
3. Noxious Heat in epidemic febrile diseases: fever, dark purple macula or eruptions.
4. Purpura,[1] boils and abscesses.[1]
CONTRAINDICATIONS: Use only in excessive Heat.[3]  Use with caution on pregnant women.[2,3,4] Rashes in cases of Qi deficiency or where there is no high fever.[4] This drug is antagonistic to Aconitum carmichaeli- Fu zi and Aconitum kusnezoffii- Zhi cao wu.[2]
PATENT COMBINATIONS
- Bleeding due to Blood Heat, such as hematemesis and epistaxis- use with Rehmannia root, red Peony root and Moutan bark- Decoction of Rhinoceros horn and Rehmannia- Xia jiao di huang tang.
- Acute febrile diseases with Heat invasion of the Heart and Ying system manifested as persistent high fever, unconsciousness and delirium- use with dried Rehmannia root, Scrophularia root and Forsythia fruit- Decoction for clearing away Heat in the Ying System- Qing ying tang.
- If the Heat has gone into the Heart and Liver, shown as high fever, restlessness, spasm and convulsion, it is often used with antelope's horn- Purple Snowy powder- Zi xue dan.
- Epidemic febrile diseases with excessive noxious Heat manifested as fever, dark purple macula or eruptions. It is often used with Gypsum and Scrophularia root- Decoction for relieving feverish rash- Hua ban tang. COMBINATIONS
PREPARATIONS: Horn 2-6 g filed into fine powder and infused with warm boiled water for oral administration, or ground into a liquid for an oral dose, or decocted separately and mix its decoction with that of other drugs for an oral dose, or used in bolus and powder.[2]
0.6-2 g.[1] 1-9 g.[3]

ORIGIN: India, Nepal, Burma, Thailand, Malaysia, Indonesia- Asia species. East and West Africa- African species.
References
Inner Path can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Constituents

Research

Ethnopharmacology of rhinoceros horn. II: Antipyretic effects of prescriptions containing rhinoceros horn or water buffalo horn.
But PP, Tam YK, Lung LC.
Abstract
Aqueous extracts of rhinoceros horn or water buffalo horn demonstrated significant antipyretic action at 2.5 g/ml i.p. (1 ml/animal) in rats with hyperthermia induced by subcutaneous injection of turpentine oil. Qingying Decoction, a classic compound prescription composed of rhinoceros horn and eight herbs, showed significant antipyretic action at dosages equivalent to 0.5 g/ml of rhinoceros horn extract. Comparable action was obtained by Qingying Decoction prepared with water buffalo horn. It is suggested that water buffalo horn can be used as a substitute for rhinoceros horn in treating hyperthermia, especially when prepared with other herbal materials according to the principles of compound prescriptions of Chinese medicine.
PMID: 1943172   J Ethnopharmacol. 1991 May-Jun;33(1-2):45-50. ncbi.nlm.nih.gov