From old times Kamarkas has been used to reduce back pains specially after baby birth for women.
As per Google:
Kamarkas is a very rare spice only found in few parts of the world. It is derived from the resin of the Indian Palash tree.
Kamarkas is also called Bengal Kino, Sage Herb or Flame of the Forest.
It is used by female in pregnancy and after delivery as a remedy for back pain and weakness. This herb is very effective for women with delicate body. In India, women use Kamarkas herb to overcome body pain, weakness, and supple muscles. It also helps the body reshape after delivery.