6 to 12 months`: Allergy shots or immunotherapy may take up to a year to be effective. Sometimes additional medications to control symptoms are required, since allergy shots are seldom 100% effective.
Answered 12/23/2014
3.4k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question