In the era known as Dwapara Yuga, Dhanvanthri appeared to give the science of Ayurveda to humans. Ayurveda focuses on balance of the nature of one's body, mind, senses, and consciousness in harmony. Any upset with digestion, toxins that enter the blood stream clogging channels and tissues, results in adverse affects to the vital life energy (pranas), and immunity (ojas), and the cellular metabolic energy (tejas) resulting in diseases or ailments. The Bhagavatam states "smrta-matrarti-nasanah" - One who remembers and chants the name of Dhanvanthri can be released from all disease - even those that are latent.
Lord Danvantri is considered the "God of 3 Worlds". In times immemorial, it is said that Lord Danvantri rose out of the milky ocean and brought the elixir; "the nectar of immortality" to devas, which allowed them to conquer the demons. He was one of the 14 Ratnas (Gems) that emerged from the ocean. Lord Danvantri was the "Vaidhya Ratna" (a gem with medicinal importance). He is worshipped for a good health, and speedy recovery from health ailments. Dhanvanthri is another form of Narayana or Maha Vishnu (The Lord of All Forms), and is the aspect of the Divine that brings in Celestial Healing. Energy Healing begins to work on multi dimensions starting from the most subtle soul level of transformation and flowing to the physical body.
Each Yantra offered by Astroved has a small amount of real gold plating. They are crafted by the most prestigious ritual product center in Southern India, so they are very authentic in design. To get rid of health related problems, Dhanvantri yantra comes into play. Even the incurably diseased have witnessed betterment in their health! The most popular Dhanvanthri Mantra (if one wishes to chant for one's own benefit, or for a loved one) is "OM SHRI DHAN-VAN-TRE NAMAHA!" (Chant it 108 times a day for serious ailments).