Indications

Diphenhydramine is an antihistamine used in the treatment of allergies, insect bites or stings and other causes of itching. It is also used for its sedative and antiemetic effects in the treatment of motion sickness and travel anxiety. It is also used for its antitussive effect.

Contra-indications

Not established.

Side Effects

The most common adverse effects of diphenhydramine are sedation, lethargy, vomiting, diarrhea and lack of appetite. 

Administration and Dosage

Intramuscularly, subcutaneously, externally

Large ruminants: 3.0 – 6.0ml

Horses: 1.0 – 5.0ml

Small ruminants: 0.5 – 0.8ml

Dogs: 0.1 – 0.4ml

Withdrawal Times

For meat – 1 day after the last administration of the preparation.

For milk – 1 day after the last administration of the preparation.

Storage

Store below 25ºC, in a cool and dry place, and protect from light.

For Veterinary UseOnly , Keep out of reach of children