In past weight loss journies I used to use them. I do like the dark chocolate "new" slim fast shakes.
If it works for you, I say go for it.
My strategy is to save enough calories to have a really filling meal for supper--like you, usually around 6:00. 800 calories around this time seems to keep me 'till I go to bed pretty well. I might drink some water, too, and that helps.
Anyweigh, Muna, if you log the cals, I don't think slim fast is a bad idea.
47 M 5'8"
May 4, 2010...... 440? lbs. (Start FitDay Size 60 Jeans)
June 19, 2010.... 393 lbs. (First Weigh-in)
June 19, 2011.... 229 lbs. (164 lbs. gone in one year :-)
Current Weight... 185 lbs. (Size 36 Jeans)
Next Goal 169 lbs. (07/04/12)
Ultimate Goal 165 lbs. (12/31/12)
The best exercises for weight loss are Fork Putdowns and Table Pushaways.