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Effects of fexofenadine, diphenhydramine, and alcohol on driving performance

pubmed.ncbi.nlm.nih.gov

1–10 of 65 posts

Re: Effects of fexofenadine, diphenhydramine, and alcohol on driving performance

#2
2nd gen antihistamines (Fexofenadine, Cetirizine, Loratidine) are definitely what you want for allergies. 1st gen like Benadryl/Diphenydramine have awful side effects. I highly recommend nasal sprays like Fluticasone as well, available OTC in the US these days and amazing stuff.

Re: Effects of fexofenadine, diphenhydramine, and alcohol on driving performance

#4
The article is extremely short, but comparing 2-4 OTC doses of diphenhydramine to a level of alcohol concentration above what constitutes a DUI in most places seems like an odd choice? Or is that just a matter of proof of concept, go for the big obvious demonstration first?

Re: Effects of fexofenadine, diphenhydramine, and alcohol on driving performance

#7
post #4

The article is extremely short, but comparing 2-4 OTC doses of diphenhydramine to a level of alcohol concentration above what constitutes a DUI in most places seems like an odd choice? Or is that just a matter of proof of concept, go for the big obvious demonstration first?

2 doses of diphenhydramine can have very noticeable and profound effects on many people, 50mg total isn't a light dose by any metric. That seems fine as a comparison to 0.1% BAC.

But 60mg Fexofenadine makes no sense to me in comparison. It's usually 180mg in a single pill.

Re: Effects of fexofenadine, diphenhydramine, and alcohol on driving performance

#8
post #2

2nd gen antihistamines (Fexofenadine, Cetirizine, Loratidine) are definitely what you want for allergies. 1st gen like Benadryl/Diphenydramine have awful side effects. I highly recommend nasal sprays like Fluticasone as well, available OTC in the US these days and amazing stuff.

Fluticasone changed my life. It's a wonder drug.

Re: Effects of fexofenadine, diphenhydramine, and alcohol on driving performance

#9
post #4

The article is extremely short, but comparing 2-4 OTC doses of diphenhydramine to a level of alcohol concentration above what constitutes a DUI in most places seems like an odd choice? Or is that just a matter of proof of concept, go for the big obvious demonstration first?

The directions I'm looking at for a store brand diphenhydramine say to take 1-2 of the 25mg tablets as needed, so I'd expect that's the typical therapeutic dose.

Re: Effects of fexofenadine, diphenhydramine, and alcohol on driving performance

#10
post #2

2nd gen antihistamines (Fexofenadine, Cetirizine, Loratidine) are definitely what you want for allergies. 1st gen like Benadryl/Diphenydramine have awful side effects. I highly recommend nasal sprays like Fluticasone as well, available OTC in the US these days and amazing stuff.

I would argue that, whatever “generation” it is, cetirizine does not deserve credit for being second generation. I know plenty of people with extremely obvious CNS effects from it. In contrast, loratadine seems innocuous.
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