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Doctor insights on: How Long Does Zantac Stay In Your System

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How long does it take for Zantac (ranitidine) 150 to completely leave your system? I took 1 dose 2 nights ago and am having abdominal pain and I'm very lightheaded

Get yourself checked: Zantac (ranitidine) 150 mg should leave your body in less than 24 hours. It should not case any of the symptoms that you are describing. You need to see a doctor for alternative explanation of your symptoms. ...Read more

Dr. Sanjay Talati
651 Doctors shared insights

Ranitidine (Definition)

Treats and prevents heartburn with acid indigestion. Also treats stomach ulcers, gastroesophageal reflux disease (gerd), and conditions that cause your stomach to make too much acid (such as zollinger-ellison syndrome). This medicine ...Read more


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Is 150 mg of Zantac (ranitidine) safe for long term use?

Yes it is safe: It is safe for long term use
But let your doctor know you are taking it ...Read more

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How long is it supposed to it take for Zantac (ranitidine) to work?

How long is it supposed to it take for Zantac (ranitidine) to work?

About an hour: It usually takes this long to lower the acid level in the stomach for any noticeable difference. ...Read more

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How long does Zantac (ranitidine) take before you can feel its effects?

Zantac (ranitidine) for acid: Usually in 30 minutes you should be having some affect but may vary in everyone. ...Read more

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What is a safer long term med. Omeorazole or zantac (ranitidine)?

What is a safer long term med. Omeorazole or zantac (ranitidine)?

Both are safe: Anti-reflux measures such as raising the head of the bed, avoiding tight clothing or belts, avoiding eating late at night and not lying down shortly after mealtime and achieving weight loss are great treatments. Avoid aspirin, anti-inflammatories, caffeine, peppermints, alcohol and tobacco.
Both Zantac (ranitidine) and Omeprazole are safe to use daily. ...Read more

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I took a Zantac (ranitidine) 150 (generic) how long should I wait to take Maalox?

Immediately: Zantac (ranitidine) will decrease acid production and Maalox will help buffer the acid already in your stomach. For my patients having indigestion I usually recommend a drug like Zantac (ranitidine) taken as instructed on package insert along with an antacid like Maalox taken after each meal and at bedtime. ...Read more

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How long after taking Zantac can I consume alcohol?

How long after taking Zantac can I consume alcohol?

No waiting period: Technically there is no interaction between alcohol and Zantac, however alcohol intake should be limited or eliminated when GERD or peptic ulcer disease are present, as alcohol can worsen these conditions. ...Read more

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Which is better for long term use? Zantac (ranitidine) or Pepcid?

Same: There are no major differences between those two medicines. Both are about equally effective. If you take other medicines you should check with a pharmacist or your doctor to make sure there isn't an interaction. ...Read more

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How long after taking a Zantac (ranitidine) can I take a probiotic?

How long after taking a Zantac (ranitidine) can I take a probiotic?

2 different issues: (1) Zantac (ranitidine) is an inhibitor of nerve impulses from brain to upper 2/3 stomach to secret hydrochloric acid; can ↓ secretions by about 100 fold, out of million fold range. (2) Probiotics are concentration of microorganisms/bacteria believed to be beneficial to healthier intestinal function as part of the human biome. Confusion between the two different issues? ...Read more

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Had acid reflux since I was 12 (18 yrs) and only Zantac (ranitidine) has worked, no other otc. It no longer works, even at 150 mg 3-4x daily. Any other OTC sugg?

Had acid reflux since I was 12 (18 yrs) and only Zantac (ranitidine) has worked, no other otc. It no longer works, even at 150 mg 3-4x daily. Any other OTC sugg?

Get re-checked. C MD: If you have chronic symptoms, and no longer getting relief from your usual meds, you need to get re-evaluated (assuming that you have been evaluated by a doc in the first place and have not just been self medicating). ...Read more

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Is Dexilant (dexlansoprazole) 60mg in the morning and Zantac 150 at night safe to take and if so for how long?

Safe to take: These two medications inhibit the release of acid in your stomach. The acid does have an important role in digestion. The ppi meds (dexilant) have an adverse effect on calcium absorbtion in the body and therefore can contribute to the development of osteoporosis.
You need to work with your doctor to find out why you are having and what you can do to decrease the gastritis. ...Read more

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How long do you need to take allegra and Zantac (ranitidine) to treat hives?

How long do you need to take allegra and Zantac (ranitidine) to treat hives?

Hive treatment: Hives can be acute, lasting less than 6 weeks or chronic lasting greater than 6 weeks, (possibly even for years). Antihistamines might control hives but could be needed long-term. Try stopping daily antihistamines once every month for a few days to see if they are still needed. See an allergist to help find the underlying cause if your pcp fails to discover a trigger. ...Read more

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Can zantac (ranitidine) cause shortness of breath when used for longer than 14 days?

Can zantac (ranitidine) cause shortness of breath when used for longer than 14 days?

Not likely: Shortness of breath is not a common side effect of Zantac (ranitidine). If you are experiencing shortness of breath, you should contact your doctor right away, or be seen in an Urgent Care or ER. ...Read more

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I suffer from GERD. Can I take 150mgm Zantac (ranitidine) tablets once daily with no long term restrictions?

I suffer from GERD. Can I take 150mgm Zantac (ranitidine) tablets once daily with no long term restrictions?

GERD: Zantac or "ranitidine" is a good medication to treat GERD with and usually tolerated with little to no side effects. I have multiple patients on long term therapy who have had no problems. ...Read more

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My 18 day old is on 1 ml of Zantac (ranitidine) for 5 days now. She still has the arching of the back and painful cry. How long until meds kick in? New meds?

My 18 day old is on 1 ml of Zantac (ranitidine) for 5 days now. She still has the arching of the back and painful cry. How long until meds kick in? New meds?

Not a quick fix: Every baby has some reflux & some have more symptoms than others. The backwash of stomach acid produces the equivalent of a sunburn on the inside of the swallowing tube & that hurts. The Zantac (ranitidine) reduces the acidity some but it is not a pain controler. It just gives the gut a better chance to heal. After a week or 2 on meds u should see improvement. Discuss some other things u can try with the dr. ...Read more

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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 gastritis take to heal? Had it for 7 weeks now, been taking probiotics, zantac, (ranitidine) buscopan and eating fresh food and its getting worse

Time for a change...: Zantac (ranitidine) in doses less than 100mg (otc dosing is 75mg) effectively inhibits basal & nighttime acid output by the stomach. However, food-stimulated acid production & tobacco/ nsaid/ alcohol injury may need bigger "guns." prescription-strength doses of zantac (ranitidine) are 150-300mg twice daily. Stop tobacco, nsaids, & drinking alcohol, & ask your doctor if time to switch medication or to get further testing. ...Read more

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

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? ...Read more

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Can Zantac (ranitidine) hurt my babies digestion (good flora, acidity, efficiency etc) in the in the long run? How severe should reflux s/s before using zantac (ranitidine)?

Can Zantac (ranitidine) hurt my babies digestion (good flora, acidity, efficiency etc) in the in the long run? How severe should reflux s/s before using zantac (ranitidine)?

Unlikely: But you can consider a probiotic instead or teas with chamomile, fennel, ginger, and look at dietary factors (sensitivities/allergies to cow's milk for example). I rarely use zantac (ranitidine) but would only consider if poor growth or pain is an issue. ...Read more

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Will ranitidine/zantac with miconazole cause any long qt or qt prolongation?

Will ranitidine/zantac with miconazole cause any long qt or qt prolongation?

Negative: Neither drug will prolong your qt interval. Nor will the combination prolong it. ...Read more

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How long does it take for acute gastritis to heal... my doctor prescribed zantac (ranitidine)... I take it twice a day.

How long does it take for acute gastritis to heal... my doctor prescribed zantac (ranitidine)... I take it twice a day.

More info: It depends on what caused the gastritis. did your doctor check for h pylori infection, or do endoscopy? Usually over-the-counter Nexium (esomeprazole) would be stronger than Zantac. When properly diagnosed and treated, gastritis usually resolves within a month or so. ...Read more

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How long does steroid induced gastritis take to go away completed? Told I had it days ago. Put On Prilosec and Zantac. How do they help my gastritis?

How long does steroid induced gastritis take to go away completed? Told I had it days ago. Put On Prilosec and Zantac. How do they help my gastritis?

Stomach acid: Gastritis is an inflammation of the lining of the stomach, which damages the acid barrier. Prilosec and Zantac are both medications that block stomach acid production, which gives your stomach a chance to heal. Many factors can affect how long it will take to heal. It's important to stay on acid-blocking medications until healed. ...Read more

Zantac (Definition)

Zantac is a H2 receptor blocker which is a kind of ...Read more