Yes, and if it is causing pain then you need to stop taking it immediately, as it can cause serious and life-threatening problems. Since there are high levels of caffeine and other stimulants, it can be a problem for many people who don't even know they are sensitive to it.
Yes, it can and you should discontinue use and see a doctor. It is subject to FDA recall for liver problems. It can also contain unapproved and undeclared drugs.
Hydroxycut clearly is linked to heart problems as well as liver and other organ issues. The heart problems associated with this medicine can be life threatening and certainly painful.
Little is known about side effects from this product. Stop taking it and see if your symptoms improve. That's the best way to determine if it is the cause.
When one experiences any heart pains a physician should be consulted. Heart pains could be a precursor to having a major heart attack. Hydroxycut contains a stimulant which gives one the energy rush. The stimulant could be causing an accelerated heart rate which could cause the pain. Hydroxycut is being recalled due to potential life threatening liver damage.