3 doctors weighed in:

What is the limit of Benadryl (diphenhydramine) allergy pills you should take as an adult?

3 doctors weighed in
Dr. Alex Martinez
Internal Medicine - Allergy
1 doctor agrees

In brief: 1-2 every 4-6 hrs

Benadryl (diphenhydramine) is an antihistamine used in the treatment of allergies.
It doesn't work long so it has to be taken often. The recommended dose is 1 or 2 pills (each 25 mg) every 4-6 hours, so a maximum of 12 per day (300 mg/day). Taking any Benadryl can cause sleepiness, headaches, dry mouth, & difficulty urinating. Excess Benadryl can cause delirium, diarrhea, seizures, and even coma.

In brief: 1-2 every 4-6 hrs

Benadryl (diphenhydramine) is an antihistamine used in the treatment of allergies.
It doesn't work long so it has to be taken often. The recommended dose is 1 or 2 pills (each 25 mg) every 4-6 hours, so a maximum of 12 per day (300 mg/day). Taking any Benadryl can cause sleepiness, headaches, dry mouth, & difficulty urinating. Excess Benadryl can cause delirium, diarrhea, seizures, and even coma.
Dr. Alex Martinez
Dr. Alex Martinez
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Dr. Jack Mutnick
Internal Medicine - Allergy & Immunology

In brief: Depends

Follow the directions on the bottle unless you have spoken with your physician who gave you a different instruction list.
The maximum recommended daily dose (not all at once) is 300mg/day.

In brief: Depends

Follow the directions on the bottle unless you have spoken with your physician who gave you a different instruction list.
The maximum recommended daily dose (not all at once) is 300mg/day.
Dr. Jack Mutnick
Dr. Jack Mutnick
Thank
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