2 doctors weighed in:

Can a person form a tolerance to diphenhydramine?

2 doctors weighed in
Dr. Mark Diamond
Pediatrics
1 doctor agrees

In brief: Yes

This is possible and care needs to be taken for increasing the dose.
Doctor consultation here is good.

In brief: Yes

This is possible and care needs to be taken for increasing the dose.
Doctor consultation here is good.
Dr. Mark Diamond
Dr. Mark Diamond
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