HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

How long will zantac (ranitidine) 150 mg take to work for gastritis? ive been taking it for 3 days no effect on me. idk the cause of gastritis just no h pylori

A doctor has provided 1 answer

May take longer: I would give it a week to work, if not, then you may need a different medication. Was this rec by your doctor?

Dr Rhoades agreed

Answered 3/1/2015

3.2k views

Thank

Related Questions

A member asked:

I have had gastritis for the last 2.5 months. I have been diagnosed with slight IM. I am taking 300 - 600 mg of Zantac (ranitidine) daily. What could be going on?

A doctor has provided 1 answer

A member asked:

Uper stomch pain few mnths.better w zantac (ranitidine).dr say gastritis.now 10 weeks pregnant &pain is worse.dr say hormonal change.normal or further evaluation?

2 doctors weighed in across 2 answers

A member asked:

Severe acid reflux no matter what I try. Endoscopy showed gastritis but byopsie normal. PPI's made me sick & Zantac (ranitidine) made me dizzy. What can I do?

A doctor has provided 1 answer

A member asked:

Diagnosed with gastritis 2 weeks ago - using Zantac (ranitidine). Day before and since having orange stool and constipation - please help - age 35/female?

A doctor has provided 1 answer

A member asked:

Recently diagnosed with gastritis, Prevacid worked for awhile but is no longer! No ins/doc, any advice...I have Zantac 150, would that work? Dosage?

A doctor has provided 1 answer

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

What can cause vertigo in middle of night. Started at 2am and finally subsided around 7am. I was diagnosed w gastritis about a month ago, take Zantac (ranitidine) ?
How long it takes Zantac (ranitidine) to work for gastritis?
How long does gastritis take to heal? Had it for 7 weeks now, been taking probiotics, zantac, (ranitidine) buscopan and eating fresh food and its getting worse
How long does it take for acute gastritis to heal... my doctor prescribed zantac (ranitidine)... I take it twice a day.
I have gastritis and was prescribed Prilosec in the morning, Zantac (ranitidine) at night. The afternoon I am in debilitating pain. What can I take in between?

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
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.