Does Taking Methylphenidate Caused An Elevation In The Heart Rate?

Hi, I have been taking Buproprion XL 200 mg twice a day and I take methylphenidate in the morning with the Buproprion. I was doing some light work outside, started t sweat a little and then felt a little out of breath. I came inside and took my blood pressure, which has always been good. The numbers seemed okay except my heart rate was like 140. I rested for awhile and it came down to 125, now hours later it is 109. I am a 64 year old male, weigh around 200 and am 5 11 and I take lots of antioxidents. No Ginko, but I have added ALCAR, NALT, alphalipoic acid, and glutathione. I use beet powder. I try to eat berry extracts and mix some of it into a protein blueberry smoothie most mornings. Is it the methylphenidate that is doing that (high pulse)? I have been taking it for about a month and a half.