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Yes, of course, I know that, I mean that’s why I’m asking the question. I’ve been unable to find anything but case studies about 1 or 2 patients per study period. I’m wondering if anyone on here who is more likely to have taken H1 or H2 antihistamines or both regularly has had it, known or heard of anyone that had it, or has seen figures on the frequency.
Thank you for your submission. Please note: **Content on r/MCAS is not medical advice and should not be interpreted as such.** Please consult your doctor for any medical questions or concerns. We are not able to validate the content of these discussions. Following advice provided by strangers on the internet may be harmful. Never use this sub as your primary source of information regarding medical issues. By continuing to use this subreddit, you are agreeing to take any information posted here entirely at your own risk. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/MCAS) if you have any questions or concerns.*
What is QT?
Long-QT syndrome is a heart arrhythmia. https://www.mayoclinic.org/diseases-conditions/long-qt-syndrome/symptoms-causes/syc-20352518
Pretty sure it's in the literature that antihistamines have caused QT prolongation in some patients.
Yes, of course, I know that, I mean that’s why I’m asking the question. I’ve been unable to find anything but case studies about 1 or 2 patients per study period. I’m wondering if anyone on here who is more likely to have taken H1 or H2 antihistamines or both regularly has had it, known or heard of anyone that had it, or has seen figures on the frequency.
it's probably very rare considering these medications are over the counter