How come allegra-d? Have you tried antihistamines without pseudoephendrine? Personally I prefer benadryl for allergic reactions but it makes you drowsy. I would definitely not increase that dosage for sulbutiamine; 600mg is ALOT. If you take it more than you don't then you will gain tolerance and have withdrawal symptoms. The first week i tried my stack i did 2 os for 4 days straight and was good, along with my lifestyle regimen. The 5th day however was a different story. 2nd week I'm doing good again. 1st week was just a test and I literally sat on the floor saying to myself holyshoot, this is actually working for me.
Personally I think you are gaining benefits from the stimulants in your stack by activating your adrenergic receptors, pseudoephedrine is a strong stimulant from Allegra-D, Caffeine from your Tandrilax, Caffeine from your coffee and sulbutiamine but then you also have depressants. This is not a good long term solution though. You also say you don't get symptoms during sex which also leads me to believe your adrenergic system plays a role in it. I have to do more research if i'm not lazy lol. When someone has a severe allergic reaction, epinephrine is administered first hand and then possibly antihistamine 2nd. Masturbation is very low physical activity vs sex. Brain activation is also different such as talking to people through texting vs talking in person.
I've tried psuedoephedrine also in the past. It made me ejaculate when not having sex. In social situation i would be excited and stimulated (not sexually and then when i pee, i ejaculated.)
I'm interested in your vagus nerve suggestion as I do have pain but nothing substantial. My bowel movement have been weird and POIS has effected it. Personally for me I think it is because the muscles become overactivated either smooth and skeletal. These hormones have short half-lives but these effected cells seem to have more receptors or prolong its effects well after it is gone. It has been a longggg time since i studied neurotransmission. If we had better diagnostic tools, this would be easier to pinpoint. I think the muscle relaxer is providing you that relief. Instead of all these stimulants, i suggest replacing it with exercise. Walking/jogging/sprints and light weight training but the whole body.
Yeah quantum, everything in moderation.