It might be a placebo but I find taking Vitamin C and Echinachia supplements really help as well as making sure you get plenty of fresh fruit and vegetables, and stay hydrated. (As great as coffee is to drink-it tends to have a dehydrating affect). I'm on my final four weeks and got a horrible bug two weeks ago which laid me low physically and mentally for a full week. Once I could eat, I went onto herbal tea, cut coffee, and took the supplements. Back on track now. Best wishes with it all. Editing can be hell at times. :)