[5] Having passed his final examination on 2 February 1839 he was appointed by the Honourable East India Company as medical officer in one of the north-western towns but as he was inclined towards independent practice, he refused the post.

Prince Dwarkanath Tagore had a dispensary of traditional Ayurvedic medicine at 13, Esplanade Road and entrusted Dr Gooptu to practice from there.

There is a mention of the patented 'D.Gooptu' medicine in 'Sri Sri Ramakrishna Kathamritha'[5] where he describes Dr Gooptu work as something which brings quick relief compared to traditional medicine; He uses the analogy to highlight the importance of path of devotion i.e. Bhakti yoga in times of Kali Yuga or 'age of vice' compared to the path of ritualistic action i.e.

Dr D. Gooptu's proximity to the British also helped him to export his products to Africa and the business was transacted at 369, Upper Chitpore Road and 13, Esplanade Row East, Calcutta.

Apart from the anti-pyretic mixture, there were several other proprietary medicines of the firm, the names of which are:-[2][dead link‍] The first ancestor of the 'Gooptu's' who came and settled down in Calcutta was Ramaram Goswami and became the one in charge of the temple of Madan Mohan.