i could have written your post, esp the bit about mood/weight - and i would urge you to consider low-carbing for weight-loss/mood control - everything really! if you follow it to the letter, sugar cravings are eliminated and all the fat/water you consume is great for the skin and hair!
to answer your question, i take omega 3 fish oil, a general multivitamin with iron, and sea kelp (to help with hair/appetite control) - when i remember, that is. i also used to take a daily (low fat) probiotic drink but quit when i started low-carbing.
i did the last bootcamp here on mumsnet (in the diet/low carbing section), having just lurked on previous threads and despite not fully understanding the theory behind it, and i lost 11 lbs without feeling hungry at all! it's a lot to get your head around, but being under 11 stone for the first time in years and in my mid-forties was something i didn't think was achievable.
there's another bootcamp starting next month, it's the first 'diet' i've ever managed to follow for more than 3 days (even though i ended up falling off the wagon more than i managed to stay on) - everyone is fantastically supportive, especially BIWI and her big stick! and there are loads of success stories from previous bootcampers that are really encouraging.
as i said, i am still coming to terms with a lot of the theory behind it, but i can honestly say it works - more than supplements!