17 promising Shark Tank businesses that failed miserably 

Deeya
Still from Shark Tank (Image via Shark Tank)
Still from Shark Tank (Image via Shark Tank)

3. RuckPack

Still from the show (Image via Shark Tank)
Still from the show (Image via Shark Tank)

A founder and a marine himself, Rob Dyer, came to Shark Tank with high hopes and presented a unique energy drink that was free from caffeine and would help people in the armed forces. His product even won an investment from Kevin O’Leary and Robert Herjavec. However the company is not listed on Walgreens' website anymore, and it seems that for some unknown reason, the venture could not stay afloat.

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Edited by Nimisha