 [ Symptoms ] i frequenly get blood vesels breaking in my eye causing white area to be bright red what is the cause  it starts with what looks like a pin hole gets worse and can last over a week [ Disease ] your best bet is to speak with your pharmacist about possible interactions between your medications and foods or beverages i do not know about the combination of milk and phentermine but i do know that caffeine of any kind colas chocolate can increase the side effects of phentermine often people take either phentermine or diethylpropion not both at the same time if this is the regimen your health care provider prescribed then he or she must have determined this is safe for you however if for example you previously were taking one of those medications and then your health care provider switched you to the other but you decided to take both please consult your health care provider as soon as possible hope this helps