I took this drug for the first time yesterday and this morning my...

I took this drug for the first time yesterday and this morning my heart rate was at 130 and i ended up at the emergency room. I called my doctor and he told me to stop taking the medication immediately.I'm home today but not feeling too well. My back hurts and i have joint pain in my knees. I only took one pill and im hoping that the symptoms will go away fast. I hope i do not have permanent damage. HOW LONG DO THE SYMPTOMS LAST.??? i took this medicine for a bad sinus infection. Im drinking a lot of water and pray it will go away. this drug is DANGEROUS....and should be taken of the market. S.