If you are treating an ulcer, Zantac may take up to 8 weeks for the ulcer to heal. You should notice improvement within 6 weeks. If you are taking Zantac for gastric reflux you should notice improvement within 1 to 2 weeks.
When using Zantac to treat heartburn, it takes 30 minutes to work, according to Zantacotc.com. People who are using Zantac to promote stomach ulcer healing notice a difference within 8 weeks, Drugs.com states.
Also do not give up hope if ranitadine does not work or stops working (again not trying to be negative as for many it works fine), but just in case there is omeprazole which some Mums find more effective.
I have identical twins. One improved nearly immediately with Zantac. The other did not - and ended up on Prevacid and even that didn't help so much. We got Zantac flavored with grape. Good luck -reflux is no fun!! The good news is that eventually they DID outgrow it.
IMO, if Zantac was going to help it would have by now. It is really meant for quick reduction of acid (~30 minutes) to compete with plain antacids, plus it is a H2 blocker, which is meant to continue to work for about 12 hours.
Maximum Strength Zantac 150 ® can be taken either 30 to 60 minutes before eating to prevent heartburn or after the onset of symptoms to relieve heartburn. How does Maximum Strength Zantac 150 ® work? Maximum Strength Zantac 150 ® reduces stomach acid production. What is the difference between Maximum Strength Zantac 150 ® And Zantac 75 ®?
PPIs and Zantac (an H2 antagonist/blocker) work differently...PPIs shut off the acid pumps, so that has to happen before they start pumping/with food in the stomach. Zantac stops acid in a different way--by blocking the action of histamine on the cells that produce acid.
Zantac is the brand name of the drug ranitidine, which is used to treat stomach and digestive problems. The drug is prescribed for conditions such as gastroesophageal reflux disease (GERD), ulcers ...
Other antacids like Maalox, Tums, or Rolaids often start to work more quickly than Famotidine. Medication like omeprazole (proton pump inhibitors) works better at healing and preventing stomach ulcers than medication like Famotidine (H2 blockers). Can cause more serious side effects for people with kidney disease.
Ranitidine (Zantac) can cause liver damage but this is rare. There are no case reports of liver damage in infants due to Zantac (Ranitidine) and generally it is a safe drug in infants and toddlers given at the correct dosage.