Top
10
Doctor insights on: Zantac H2 Receptor Blocker

Share
1

1
Is Zantac (ranitidine) (histamine blocker) used for children for allergies.?

Is Zantac (ranitidine) (histamine blocker) used for children for allergies.?

Add-on for hives: Ranitidine (zantac), although it's a different kind of histamine blocker (h2 for acid vs h1 for allergies), has been shown to have some anti-allergy properties, especially when used with an h1 blocker like Benadryl (diphenhydramine) for hives. There was actually one study that showed benefit in nasal allergies, but i don't know anyone that prescribes it for that purpose. ...Read more

See 1 more doctor answer

Receptor (Definition)

An organ, cell or molecule that accepts an outside signal and causes an internal change. Eyes receive light, touch receptors send messages to the brain when stimulated by pressure and estrogen receptors bind Estradiol causing responses of normal breast, ovary and uterus cells to rising and falling levels of the female steroid hormones. Most of the time "receptor" refers to one ...Read more


2

2
Is it possible that Zantac, being a histamine blocker, could cause higher histamine production when coming off of it, resulting in development of allergies? For example consuming diet soda can result in insulin spikes in some cases, possibly leading to di

Is it possible that Zantac, being a histamine blocker, could cause higher histamine production when coming off of it, resulting in development of allergies? For example consuming diet soda can result in insulin spikes in some cases, possibly leading to di

No: Zantac (ranitidine) is a histamine 2 receptor reverse agonist and would not significantly affect histamine production.when withdrawn. There is a theoretical possibility that Zantac (ranitidine) itself may lead to more histamine release by blocking the histamine 2 receptor(which acts as a feedback switch) but this has not been clinically a significant issue. ...Read more

6

6
Expired Zantac (ranitidine) still work?

Yes, but: Depends on how long it has been expired. Effectiveness will diminish with time (years). ...Read more

7

7
Does Zantac (ranitidine) cause anxiousness?

Does Zantac (ranitidine) cause anxiousness?

Zantac (ranitidine) and anxiety: Anxiety is extremely rare in zantac (ranitidine) use. But, it has been reported. The only way to know is to stop the zantac (ranitidine). If that is the cause, the anxiety should go away in a couple of days. So far, only 10 cases have been reported. ...Read more

8

8
Can you have an overdose on zantac (ranitidine)?

Of course by why?: Zantac (ranitidine) when therapeutically dosed is 150-300mg twice daily. Over time, patients may develop tolerance to the drug but further dosing is unwarranted. If you have dyspeptic symptoms refractory to zantac, or your symptoms progress, don't exceed the recommended dose but get evaluated. ...Read more

Dr. Sanjay Talati
609 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


Dr. Sheila Smith
522 doctors shared insights

Zantac (Definition)

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