I done lipotrim for a few months and then switched to slimming world. Just make sure you do the refeed properly for a good few weeks and I found I only gained about 1/2lb(if I remember correctly) the first week of doing slimming world.
i decided to opt for doing red days only for a few weeks (which is carb limited),just to get my body used to food again.
dont be disheartened though if you do gain a few pounds the first few weeks though.its just your glycogen stores refilling. You will start losing weight again pretty quickly.
good luck x