Hi and welcome to the forum!! You will be fine on alli once you stick to the rules, i am on xenical (double the dose of alli) and the rule with that is no more than 5g of fat per 100g!! No more than 45g of fat per day, that might be slightly different with alli, i'm not sure!! All i can say is make sure your eating your calorie allowance, drink plenty of water, and stay away from foods with more than 5g of fat per 100g, and you will not see any side effects. Thats what had put me off for so long, but you honestly dont get them if you stick to it!! Good luck, and i am sure you will be saying goodbye to that first 5lb very soon!!