Dhanvantri Jayanti is dedicated Lord Dhanvantari, the Hindu God of Medicine or Ayurveda. Dhanvantri is the deity invoked and worshipped by Ayurveda Practitioners. Dhanvanthari Jayanthi is observed during different times by different Hindu communities. Mostly it is observed on the day before Diwali.
Dhanteras is observed on the day in western and northern parts of India.
Dhanvantri is believed to have appeared during the Churning of Ocean or Samdura Mantham by Devas (demi gods) and Asuras (demons). Among the numerous auspicious items that appeared during the Churning of Ocean or Samdura Manthan by Devas and Asuras. Dhanvanthari appeared elixir or Amruta.
Lord Dhanvanthari is also believed to be an incarnation of Lord Vishnu.
Dhanvantri is shown as holding the pot of Amrit in one hand and a leech in another hand. He is believed to have appeared to eradicate diseases threatening living beings.