BEDOYECTA is what it is called in Mexico, and its a B vitamin mix...... and yes, it can make you ravenously hungry, but take my advice and buy some 25g needles because the cannons they include with the readi-jects (as with all redi-jects) are no joke.....
also, keitofen can be very useful for stimulating appetite.....
also, like the reverse of dieting, go on a 1 day fast (don't eat a thing), you could make it 2 days, and this will get your appetite up and running for the next 2 weeks, if you are eating more than 4000 calories of good food a day, your body will not really suffer any detriments anyway, and although it could be argued that anabolism will not be optimal, the simple fact is, you are taxing your digestive system with so much food anyways, and giving it a break could give you advantages in other ways (such that you won't notice any metabolic disadvantage)