Type 1 hypersensitivity reaction: Anaphylaxis shock may suddenly occur during or after the injection of equine antitoxin with symptoms of gloominess or dysphoria, pale or flush face, chest depression or asthma, cold sweat, nausea or abdominal pain, weak and rapid pulses, hypertension in severe cases.
Serum Sickness (Type III hypersensitivity reaction) may occur frequently, 7 to 10 days after the injection. The main symptoms are urticaria, high fever, lymphadenopathy, local swelling and occasionally albuminuria, vomiting, joint pain as well as erythema, itchiness and edema at the vaccination site.
Reporting of Suspected Adverse Reactions: To allow continued monitoring of the benefit/risk balance of the medicinal product reporting of suspected adverse reactions is necessary. Healthcare professional are encouraged to report any suspected adverse reactions directly to the imported, distributor and/or report to FDA.
Patients are advised to seek immediate medical attention at the first signs of adverse reactions.