Get Virtual Care
  • Primary Care
  • Urgent Care
  • FAQs
  • Support Center
For Businesses
  • Direct Primary Care for Organizations
  • For DMEs and Pharmacies
  • For Health Plans
  • For Providers
About Us
  • Who We Are
  • Why HealthTap
  • Our Standards
  • Contact
Log in
Book a video appointment
Book now
  • Get Virtual Care

    • Primary Care
    • Urgent Care
    • FAQs
    • Support Center
  • For Businesses

    • Direct Primary Care for Organizations
    • For DMEs and Pharmacies
    • For Health Plans
    • For Providers
  • About Us

    • Who We Are
    • Why HealthTap
    • Our Standards
    • Contact
Log in to HealthTap
HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

How long does it take for claritin (loratadine) to start working?

A doctor has provided 1 answer
Dr. Andrew Murphy answered

Pretty Quickly: Most antihistamines will start to work within the first 30-40 minutes.

Answered 10/3/2018

4.8k views

Thank

Related Questions

A member asked:

I took a Claritin (loratadine) and it is not working can I take an allegra before 24 hours?

A doctor has provided 1 answer

A member asked:

My dr prescribed Claritin (loratadine) for a skin reaction, but its no longer effective. Can I take a second dose so I can get a decent night's sleep?

5 doctors weighed in across 2 answers

A member asked:

My allergy medication is no longer working. How long should I wait after stopping daily 10mg Loratadine doses before switching to daily 180mg fexofenadine doses? I've read that don't want to mix anti-histimines, so is a wait period necessary?

A doctor has provided 1 answer

A member asked:

My pollen allergies are killing me. I'm taking Claritin (loratadine) but its not working well what else can I take that is non drowsy?

A doctor has provided 1 answer

A member asked:

Had sinus infection since July.Doc put me on Loratadine since antibios weren't working. Soon as I take med pain middle of head. not there before. Bad?

A doctor has provided 1 answer

People also searched for:

HOW LONG DOES IT TAKE FOR CLARITIN (loratadine) LIQUID GELS TO KICK IN?
How long does Claritin (loratadine) take to work?
How long should it take for my Claritin (loratadine) to work?
Is 20mg of loratadine safe to take if 10mg is not Working?
I just took a Claritin (loratadine) D and I feel as if it's not working, can I safely take a benedryl at this point? Its been about 2 hours since the Claritin (loratadine) D.

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

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

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited

For Businesses

Direct Primary Care for OrganizationsFor DMEs and PharmaciesFor Health PlansFor Providers

Company

About UsSupport CenterContact Us

Health Content

Health TopicsDoctor Q&A by Specialty

Join Us

For DoctorsJobs
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.