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

I have an unopened pharmaceutical mixture of bismuth subnitrate with calcium carbonate which expired 2 years ago. the mixture had a shelf life of 6 months. would it still be safe to ingest, and would it have lost some potency?

A doctor has provided 1 answer

Please discard: Please discard your expired medicine. Studies are only done to ensure safety and potency for the period of time guaranteed by the expiration date. After a medicine expires, we don’t know what it will do. Best to discard the expired product and replace it with something new. Good luck!

Dr Malerman agreed

Answered 7/11/2020

62 views

Thank

Related Questions

A member asked:

Could intake of calcium carbonate with magnesium and vitamin d, american ginseng, and gingko biloba at once impair the absorption of one another?

A doctor has provided 1 answer

A member asked:

Is there any harm in taking Tums (calcium carbonate) that expired 4 years ago? I have really bad indigestion so i took 2. Didn't realize they expired in 2010

A doctor has provided 1 answer

A member asked:

21 years, female, lower right pain for two days now. Extremely nauseated. Tums (calcium carbonate) and antacids made worst and vomited. Gallbladder removed 2 years ago.

A doctor has provided 1 answer

A member asked:

I've drank about two mixed drinks and my stomach is starting to feel the effects of the tacos I had at dinner, is it safe to take tums (calcium carbonate)?

A doctor has provided 1 answer

A member asked:

I gave my almost 4 year old two tums, (calcium carbonate) he was having acid reflux. After he ate them I realized they are extra strength. He weighs 50lbs should I worry?

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:

Can pepto bismuth or Tums (calcium carbonate) help with ulcers?
I have a dull pain in my upper abdomen indigestion, nausea and feeling of fullness. Have tried Maalox, tums, (calcium carbonate) Pepto bismuth, all to no avail.
Gastroenterologist prescribed bismuth subnitrate + calcium 50/50. Dose is 'tip of a knife' 4/day for 1month, followed by probiotics for 1month.Then repeated. Dosage is vague, can I take too much bismuth this way? Is there a safe upper limit in grams?
Not good at swallowing large capsules so opened my Doxycycline & put the mixture into vegan yogurt. Will the calcium in vegan yogurt prevent effects?
Is it ok to ingest Tums (calcium carbonate) tablets and gas x at the same time?

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.