bad tasting juice

[mommafish]

I have some juice that was good at the shope but once i got a bottle and used it it is really really bad.. Ive let it steep 3 weeks but that didnt work its still bad. ive read that u can"water" them bown with pg or vg not sure what one it was though. can i get one of these at walmart or walgreens? I hate to waste money so if i could fix them that would be great.....