A 43-year-old member asked:
Disclaimer

How much diphenhydramine HCl will kill me?

1 doctor answer
Dr. John Chiu
Dr. John Chiu answered
56 years experience in Allergy and Immunology
Tons: You will likely be able to tolerate at least 5 capsules without much problem except for drowsiness and a dry mouth. As for the lethal dose, i don't know the exact number but i'd doubt that even taking 20 capsules can kill you.
Answered on Mar 12, 2016
2
2 thanks

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
Unlimited visits
$10/month

Related questions:

A 44-year-old member asked:
Dr. Andrew Murphy
28 years experience in Allergy and Immunology
Yes: An overdose of Benadryl (diphenhydramine) can be fatal.
A 45-year-old member asked:
Dr. John Norvell
20 years experience in Allergy and Immunology
No: Benadryl (diphenhydramine) is a short-acting antihistamine and is more likely to make you sleepy when used. Fexofenadine is a second-generation, non- ... Read More
2
2 thanks
A 56-year-old member asked:
Dr. Michael Sparacino
36 years experience in Family Medicine
No: It shouldn't show up in a home screening test.
A 26-year-old male asked:
Dr. Mark Diamond
45 years experience in Pediatrics
What For?: More info is needed to decide proper dose and if this is the medicine for whatever the problem is.
1
1 thank

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
Unlimited visits
$10/month