HCG is that extremely low-calorie diet? Of course it will work without the magic drops!!

Atkins is completely different. I recommend one of Dr. Atkins's original books, Dr. Atkins New Diet Revolution, circa 2001. In the US you can find copies in used bookstores. Be wary of new versions of "Atkins" that make use of manufactured foods like meal bars, shakes, and the like. Real Food is the key to long-term success.

Best wishes.