Originally Posted by
revchuck
Sudafed isn't a problem as long as you keep to the dosage on the box. This applies to both the four- and twelve-hour versions. I use it often enough that I checked it out.
I was taking lisinopril + HCTZ for high blood pressure. When I started racing I had my doc change the prescription to just lisinopril because HCTZ is a known masking agent.
I was officiating soccer games using (basic running stuff) HR monitor/GPS. I had a big game and a cold. I took the OTC stuff in OTC dosage. My HR was a good 10 beats higher. I never did that again.
At least for me, one tablet changes things a lot.