Hi V.,
Congratulations on the birth of your twins! I commend you for wanting to do what is best for them even at the expense of some of your favorite beverages. I know for me it was tough to go without a nice glass of wine. I know I probably could have had one but then I'd want two so it was easier to cut it out completely while nursing. Regarding the Monsters...NOBODY should be drinking these energy drinks; they are not healthy. I especially would not feed them to my newborns via breast milk.
A good source for breastfeeding questions is your local La Leche League or there are several great books available at Barnes and Noble. The best advice I can give you is eat as well as possible so that you are feeding your babies as well as possible. Remember, "garbage in, garbage out". Eat a well-balanced diet including plenty of fresh, raw fruits and vegetables. Avoid processed foods and fast foods. If the label lists "high fructose corn syrup" or "partially hydrogenated oil", DO NOT eat it! This advice holds true for everyone, whether you are breastfeeding or not! Feel free to email me if you have any nutrition questions. It is a subject very near and dear to my heart.
Good luck to you and God bless your precious babies,
M.
www.GoodHealthMadeSimple.com