Don't get me wrong I'm not attempting to blame my lack of HTFU on a drug, but it does seem odd that a week ago I was able to go farther/faster without cramping or at least mild cramps later after a longer (50+mile) ride. The fact that as soon as my heart rate dropped the cramps subsided males me think they may have been related to a blood flow issue *Ie. the psudoephedrine acting as a vascular constrictor. When I used to lift in the gym I used a nitric oxide supplement to increase flow to my muscles and my veins would really pop with the stuff. Whether it actually helped or not I have no idea but it seems if my veins were being constricted it
definitely could have adverse effects. Regardless I'll go to the doc before continuing to use the clairitin, perhaps my body just doesn't like it.

Perhaps I just need to HTFU!