Omkar Nath Sharma, also known as the Medicine Baba, is a retired hospital technician from New Delhi who collects unused medicines from people and distributes them to the poor free of charge. He started collecting medicine after witnessing of a construction accident in 2008, where many injured victims did not receive enough medication. To collect leftover medicine, he daily walks 5 miles in the streets of New Delhi.
Sharma manages to collect medicines of worth 5 lac per month. Sharma retired in 2008 after being a victim of Delhi Metro bridge collapse in Laxmi Nagar. He then saw two of the victims dying because of not having money for buying the needed medicines.