Antihistamine
Diphenhydramine HCl · Capsule · Oral
Active ingredient
Active ingredient (in each banded capsule) Diphenhydramine Hydrochloride 50 mg Purpose Antihistamine
Purpose
Purpose Antihistamine
Uses
Uses temporarily relieves these symptoms due to hay fever or other upper respiratory allergies: runny nose sneezing itchy, watery eyes itching of the nose or throat temporarily relieves these symptons due to common cold: runny nose sneezing
Warnings
Warnings
Do not use
Do not use With any other product containing diphenhydramine, even one used on skin to make a child sleepy
Ask a doctor before use
Ask a doctor before use if you have glaucoma a breathing problem such as emphysema or chronic bronchitis trouble urinating due to an enlarged prostate gland
Ask a doctor or pharmacist
Ask a doctor or pharmacist before use if you are taking sedatives or tranquilizers
When using this product
When using this product drowsiness may occur avoid alcoholic drinks alcohol, sedatives and tranquilizers may increase drowsiness use caution when driving a motor vehicle or operating machinery excitability may occur, especially in children
Pregnancy or breast-feeding
If pregnant or breast-feeding, ask a health professional before use.
Keep out of reach of children
Keep out of reach of children In case of overdose, get medical help or contact a Poison Control Center right away (1-800-222-1222) immediately.
Directions
Directions take every 4 to 6 hours, or as directed by a doctor do not exceed 6 doses in 24 hours adults and children 12 years and over: 1 capsule children under 12 years: ask a doctor
Other information
Other information Store at 20° - 25° C (68 - 77 °F)
Inactive ingredients
Inactive ingredients black iron oxide, D&C Red #28, FD&C Blue #1, FD&C Red #40, gelatin, lactose monohydrate, magnesium stearate, silicon dioxide, sodium lauryl sulfate
Questions?
Questions or comments? Call 1-888-676-7161
Label text from the FDA structured product label by Gendose Pharmaceuticals, LLC (revised May 15, 2026). Long sections are shortened; the complete label is on DailyMed.
Active ingredients
- Diphenhydramine Hydrochloride in 2 products
Antihistamine NDC products (2)
| NDC | Strength & form | Labeler | Type |
|---|---|---|---|
| 77333-227 | Diphenhydramine Hydrochloride 25 mg/1 Capsule | Gendose Pharmaceuticals, LLC | OTC MONOGRAPH DRUG |
| 77333-231 | Diphenhydramine Hydrochloride 50 mg/1 Capsule | Gendose Pharmaceuticals, LLC | OTC MONOGRAPH DRUG |
Frequently asked questions
What is Antihistamine used for?
Uses temporarily relieves these symptoms due to hay fever or other upper respiratory allergies: runny nose sneezing itchy, watery eyes itching of the nose or throat temporarily relieves these symptons due to common cold: runny nose sneezing
Who makes Antihistamine?
Antihistamine is listed by 1 labeler in the FDA NDC directory, including Gendose Pharmaceuticals, LLC.