Anabolic Pump is often conceptualized as merely a supplement of glucose homeostasis. While that's true in part, its true identity is one of energy metabolism as a whole; specifically, modulating energy expenditure and transfer in both fat and muscle cells, via the modulation of energy storage and production mechanisms.
During a long bout of exercise (i.e., an hour long resistance training session) your body's energy homeostasis mechanisms need to take on a more oxidative (the B-oxidation of fatty acids) as opposed to glycolytic (GLUT4 translocation and glucose storage) role. This is due in part to the inability of the body to produce the fuel (glucose) for anabolic processes at the rates needed for anaerobic exercise. In response, your body has in place several mechanisms which prevent the accumulation and synthesis of triglycerides and lipids, and release them into the bloodstream to be oxidized.
These lipolytic processes actually contribute to the majority of energy transaction in a bout of anaerobic exercise - the oxidation of fatty acids and plasma triglycerides, primarily, provide the energy for resistance training.
The reason I mention all this is Anabolic Pump's fascinating ability to regulate one of the vanguards of oxidative and glycolytic energy consumption - AMPk. AMPk works as an essential gate-keeper of energy production, reacting to extracellular fluctuations of various downstream energy messengers (AMP:ATP ratio included). Its activation is responsible for various roles, including all of the above mentioned.
Using such a product in conjunction with fasted cardio simply utilizes energy which would have been stored anyway. The mere presence of AMPk ensures that the liberated fatty acids and triglycerides will be oxidized as it plays a primary role in not only lipolysis, but the inhibition of lipid, triglyceride, and cholesterol synthesis.
In terms of blood glucose, you should have circulating plasma levels which are enough to stave off hypoglycaemia, even with the use of Anabolic Pump. As carbohydrates have not been ingested, the presence of Insulin (the main inducer of hypoglycemia) is not necessarily present. Anabolic Pump works through Insulin-reactive, though not dependent, pathways of energy metabolism. The lipolytic role is also enough to provide ample energy.
Hope that helps!