When i lost 5lbs in 10 days after trying slim fizz i couldnt believe it writes daily mail health journalist hannah ebelthite as a long serving health writer she was initially cynical but having looked into the science behind this unique effervescent tablet she declares shes convinced especially as it also worked for her fellow testers slim fizz contains glucomannan a natural soluble fibre from the root of the konjac plant used in chinese medicine for over 2000 years this fibre is