I take lisinopril for high blood pressure along with Verapamil. My doctor took me off Verapamil and increase the dosage of lisinopril to 2 pills/day. Since this was done 3 weeks ago, my gums have been sore, red and swollen. I have tried rinses, extra flossing, not helping. Is this a side effect of lisinopril? 54 yrs old, 5'7' 210lbs