### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I have been taking oxy elite pro for 6 days and yesterday all I had to drink was two equate weight loss shakes for breakfast and lunch. For supper I ate barbeque and started experiencing stomach pain and back pain along with feeling my heartbeat in my stomach. What could cause that???

### output:

Elite pro is mainly used to burn fat faster by increasing metabolism and so that it helps to reduce weight. However, it is also having some side effects like muscle twitching, increased heart rate, constipation, decrease appetite, restlessness etc. Here you have complained you had increase heart rate. As well pain in back. It could be related to the consumption of elite pro also. Elite Pro is a vasoconstriction, which shrinks the diameter of blood vessels and impedes blood flow. With an increased heart rate, vasoconstriction can increase blood pressure, which can increase ones risk for a heart attack or stroke. When used with exercise, this can be potentially dangerous. Hot Flashes: Some users of Elite Pro have reported hot flashes. This is from the increase in thermogenic compounds which can increase the metabolism. The side effect of increased metabolism is sudden hot flashes. From all above data it looks like you had stomach pain due to constipation or hot flashes as well back pain could be due to muscle twitching and increased heart rate is already a side effect of elite pro. Here I suggest stopping having it and follow a natural way of reducing weight like doing regular exercises as well maintaining healthy balance diet. This will be much better for your physical health too. In case after stopping this elite pro still you have the same symptoms then I suggest visiting a doctor for detail examination of your heartland stomach health along with back issues. Take care.