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

How long 300 mg of renetedine is effective for controlling stomach acid ? is it good for 24 hours?

A doctor has provided 1 answer

2-a-day dosing.: With 150mg twice a day dosing (not 300mg all at once), Ranitidine is considered effective for 24 hours a day.

Answered 11/10/2016

895 views

Thank

Related Questions

A member asked:

Is it safe to take propranolol 40mg a day alongside 15mg of mirtazapine at night alongside 250mg of ranitidine a day for stomach acid reflux?

A doctor has provided 1 answer

A member asked:

I have taken Ranitidine for acid reflux and stomach discomfort for a long time. I can get omeprazole cheaper. Would it be a comparable substitute?

4 doctors weighed in across 2 answers

A member asked:

What to do to get your stomach acid back up from taking Zantac (ranitidine) or Prilosec??? HELP PLEASE, really don't want to catch an infection or bacteria germs

5 doctors weighed in across 2 answers

A member asked:

I'm on ranitidine tablets all year twice a day for ulcers I've had and high levels of stomach acid. If I want to do oral sex on my partner is it safe to swallow his semen?

A doctor has provided 1 answer

A member asked:

Stomach spasms for 24 hours in mid to lower abdomen. Also mild cramps on right side abdomen. Not sure if I should take Zantac (ranitidine). ?

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:

Are medicines like renetedine that are not from PPI family also effective in treating lapryngeal reflux or they are only good for protecting stomach?
Is it safe to take ranitidine dissolvable tablets for stomach acid and then propranolol oral solution an hour after ?
I have taken 150mg zantac (ranitidine) twice a day for 7 days to reduce the acid in my stomach, as prescribed. Does it cause withdrawal symptoms?
My 12 year old just started taking Zantac (ranitidine) for stomach acid. How many days should it be before we see some improvement if it's working. thanks.
My stomach is really burning from past 1 week a local doc suggested me ranitidine and a anti acid syrup but that's not doing well and prob is still?

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.