angina
"Suffered from angina on excersion. Have had now 6 cath, 7 stents and a bypass. Started on 500 mg twice a day. I was increased to 1000 mg twice a day, by the 4th day I was so sick. Dizzy, confused, high blood pressure ended up in the hospital.  Went back on 500 because I thought it was the ranexa. After another check up my doctor told me he was sure it wasn't the 1000 mg dose so I increased it , four days in and wham felt horrible. Went back to 500 and felt alright and didn't need my nitro. But then I got blocked up and had my seventh stent. No angina now and I came of the ranexa."