 [ Symptoms ] can lipozenekonjac root cause positive drug test for amphetamines  lipozene derived from konjac root sold at walmart as dietary supplement for wieght loss no mention of stimulants but caused positive result on drug test for amphetamines any info i can get to explain this [ Disease ] konjac root is a gelatin like substance and not a stimulant in any form it is used for dieting simply because it has no calories and can fill you up since the gelatin does not readily dissolve it should not cause a positive drug test for amphetamines if you tested positive then something else has likely caused it you can ask that the test be repeated