What are the benefits and effects of deer antler? One article explains it clearly

Deer antler is the ossified antler of the red deer or sika deer (both in the family Cervidae), or the antler base that falls off in the spring of the following year after the velvet antler is sawed off. Used as medicine, it has the effects of warming kidney yang, strengthening tendons and bones, promoting blood circulation and reducing swelling. It has therapeutic effects on conditions such as kidney yang deficiency, impotence and spermatorrhea, cold pain in the lower back and spine, yin flat abscesses and sores, early-stage acute mastitis, and blood stasis swelling and pain. Now let us take a look at the benefits and effects of deer antler!
The medicinal effects of deer antler
[Nature and flavor] Salty in flavor, warm in nature.
[Meridian entry] Kidney and liver meridians.
[Effects] Warms kidney yang, strengthens tendons and bones, promotes blood circulation and reduces swelling. Mainly treats kidney yang deficiency, impotence and spermatorrhea, cold pain in the lower back and spine, yin flat abscesses and sores, early-stage acute mastitis, and blood stasis swelling and pain.
Contraindications and precautions for the use of deer antler
1. "Bencao Jingshu": Those without retained blood stasis must not take it; it is contraindicated for those with excess yang and yin deficiency, and it is also unsuitable for toothache due to stomach fire.
2. "Depei Bencao": It is also prohibited when the vital gate fire blazes and when sore toxins should be treated with cooling methods.
Medicinal combinations of deer antler
1. With Eucommia bark: tonifies the kidney and boosts essence, strengthens tendons and bones.
2. With cinnamon bark: tonifies the kidney and warms yang, tonifies the kidney and boosts essence.
3. With Angelica sinensis: nourishes blood and tonifies blood, tonifies both liver and kidney.
4. With Astragalus membranaceus: promotes blood circulation and invigorates blood, dissipates stasis.
Medicinal formulas of deer antler
1. To treat breast abscess and various carbuncles and deep-rooted boils on the back: burn deer antler, pound into powder, mix with bitter wine and apply.
2. To treat sores on the feet from damp-heat pouring downward: burn deer antler until charred but retaining its nature, add calomel and grind together, mix with oil and apply.
3. To treat sudden bleeding during pregnancy with unbearable low back pain: deer antler (cut into pieces) 1 liang, Angelica sinensis (cut into pieces) 1 liang. Take the above two ingredients as one dose, add 2 cups of water, decoct until 1 cup remains, remove the dregs, take warm before meals.
4. To treat incomplete bleeding after childbirth with restlessness and abdominal pain: burn deer antler into charcoal, pound and sift, cook fermented soybean juice, take one square-inch spoonful, three times during the day and twice at night, gradually increasing to two spoonfuls. If fermented soybean liquid is unavailable, use boiled water as the decoction.
5. To treat retained placenta: deer antler shavings 3 fen. Grind into powder, take with ginger decoction.
6. To treat low back pain: deer antler shavings, roast until yellow-red, grind, take one square-inch spoonful with wine, five to six times a day.
7. To treat pain in the tendons and bones: deer antler, burn until charred but retaining its nature, grind into powder, take 1 qian with wine, twice a day.
8. To treat extreme bone deficiency with facial swelling and dark grimy complexion, spinal pain with inability to stand for long, qi decline with hair loss and withered teeth, low back and spinal pain, and even frequent spitting: deer antler 2 liang, Cyathula officinalis 1.5 liang. Grind the above into fine powder, refine with honey into pills the size of parasol tree seeds. Take 70 pills each time, swallowed with salt decoction on an empty stomach.
9. To treat white turbidity in women with slippery, rapid pulse and deficiency-cold: deer antler shavings, stir-fry until yellow, grind into powder, take with wine.
10. To treat wasting-thirst with 7 to 8 sheng of urine day and night: deer antler, roast until scorched, grind into powder, take five fen of a square-inch spoonful with wine, twice a day, gradually increasing to one square-inch spoonful.
11. To treat chronic blood in the urine that does not stop, with a thin and rapid pulse: deer antler 8 liang (burned to ash), autumn mineral 1 liang (calcined to ash). Grind together into powder, make into honey pills, take 3 qian with dark plum decoction.