For treating a duodenal ulcer or stomach ulcer, the usual nizatidine dosage is 150 mg twice daily or 300 mg once daily in the evening. The recommended nizatidine dose for treating gastroesophageal reflux disease (GERD) in adults is 150 mg twice daily. The suggested dose of over-the-counter nizatidine for people heartburn, acid indigestion, or sour stomach is 75 mg twice daily. Your age and other drugs you may be taking are among the factors that can affect nizatidine dosing.
The dose of nizatidine (Axid®) that your healthcare provider recommends will vary depending on a number of factors, including:
- Your age
- The medical condition you are being treated for
- Other medical conditions you may have
- Other medications you may be currently taking.
As always, do not adjust your dose unless your healthcare provider specifically instructs you to do so.
Nizatidine Dosage for Ulcers
When treating a duodenal ulcer or stomach ulcer, the usual dose of nizatidine is 150 mg twice daily or 300 mg once daily in the evening. For people with duodenal ulcers, nizatidine can also be used to prevent the ulcers from returning. After the ulcer is healed, the dose to prevent future duodenal ulcers is nizatidine 150 mg once daily at bedtime.
Nizatidine Dosage for GERD
The recommended dosage of nizatidine for gastroesophageal reflux disease (GERD) in adults is 150 mg twice daily. For GERD in children ages 12 and up, the dose of nizatidine oral solution is 150 mg (2 teaspoonfuls) twice daily. Nizatidine oral solution is a bubble gum-flavored liquid version of nizatidine.
Non-Prescription Nizatidine Dosage
For adults and children ages 12 and over, the nizatidine AR dose for heartburn, sour stomach, or acid indigestion is nizatidine AR 75 mg twice a day, taken 30 to 60 minutes before eating.