Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great (at first)

I've been on Adkin's plan for about 3 months now. For the first 2 weeks of the diet, I lost about 10 pounds, and was initially pleased. However, I have only managed to lose another 5 pounds since the first 2 weeks! I think Adkins does bring up some valid points regarding the biochemistry of the diet, but overall I am not very pleased at the results of this plan. The writing style of Adkins gets a little old after awhile, as he's trying to persuade you that his plan is the best, and everyone else is wrong. One word of advice while you are out shopping for all your meat, eggs, and butter, buy a can of Metamucil, you are going to need it!