Benadryl is a first generation antihistamine. And as such, has some anticholinergic side effects. It is these that would interfere with MG I think.
Injectables often have preservatives in them. Sulfites, for example.
The brand name is listed with this preservative called a germacidal agent:
benzethonium chloride
Mylan's version has the same ingredient.
Hospira brand shows no preservatives... I looked over their PDF and could not find a preservative listed either.
Here is the whole list from the FDA:
Quote:
APP PHARMS
A080817 AP Yes DIPHENHYDRAMINE APP Pharms HYDROCHLORIDE INJECTABLE; INJECTION 50MG/ML
DIPHENHYDRAMINE HYDROCHLORIDE HIKMA MAPLE
A040140 AP No DIPHENHYDRAMINE HYDROCHLORIDE INJECTABLE; INJECTION 50MG/ML
DIPHENHYDRAMINE HYDROCHLORIDE HOSPIRA
A040498 AP No DIPHENHYDRAMINE HYDROCHLORIDE INJECTABLE; INJECTION 50MG/ML
DIPHENHYDRAMINE HYDROCHLORIDE MYLAN INSTITUTIONAL
A091526 AP No DIPHENHYDRAMINE
HYDROCHLORIDE INJECTABLE; INJECTION 50MG/ML DIPHENHYDRAMINE HYDROCHLORIDE PRESERVATIVE FREE BD RX
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Notice the last one lists preservative free.
This is from FDA Orange book, which lists all drugs, brand and generic.
Allegra and Claritin are typically not anticholinergic. But they are not very strong either. Both are OTC
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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