[accidental_ booby]

Are you trying to loose weight? If not, are you feeling well? If not, you might want to consult your doctor, because weight loss and not feeling well may be signs of other health problems. If it is stress from something, probably not a good time to try NBE. Controling the sourse of stress should come first--your health is more important than big boobs. The multi-vitamin would not be the cause of weight loss.
If you are loosing weight , that means that the fat that would be going to your boobs is going elsewhere and so it will be difficult to "grow". You have a mammary gland, fat, milk ducts and and connective tissue (collagen) and blood vessels and that's about it. Unless you are working the "milk producing angle" , adding some fat to your breasts will be the likely thing. Your mammary gland might grow some but your body would need something to set that in motion--like trying to grow another finger or something. Pregnancy would do that but that is the hard way to do NBE.
Actually , it is not necessarily a waste to try any herb or pill a little at a time just in case your have an adverse reaction--just like doing a skin test with hair color or hair remover, etc. Some people do have reactions and it is prudent to begin slowly.