Yes - lots of ways of dealing with constipation which is a common and normal side effect of very low calories diets. Its probably best to add fibre to your diet (not as food though). You can add Phyllisum Husks (from Health food shops) or I add Fibre Clear - you can find details on the Lipotrim web site - its available mail order or get it chemists which offer Lipotrim.
Senokot is sometimes harsh but others do fine on it. Dulocolax acts in a similar way. Some people add a 'stool softener' such as Ducolease - best to try and find what suits you best.
Most important is to drink plenty of water, some exercise and find what suits you best.
senocot is fine , although I find it gives me bad cramps , the same with dulcolax .... after trying everything that we are allowed I have found movicol is the best if you can manage it , or dulco pico perles ( tesco sell them ) ,
Fibresure , benefibre , physillium husks are meant to help prevent it but it has never worked for me :/
I got some extra-strength senokots from tesco a few hours ago, took one an hour ago and the hardness of my intestines seemed to instantly go.. I've had a fair few less powerful ones this week.. i know theres something there but it's not coming damn it! Try not to take too many if you do take something because it'll stop your body absorbing the vitamins in the diet, I try to have mine a good couple of hours after I've eaten to make sure my body has had a chance to absorb the nutrients first =) Xx