Esomeprazole Injection

• Type: Acid-reducing medication

• Drug Class: Proton Pump Inhibitor (PPI)

• Form: Lyophilized powder or solution for intravenous (IV) injection or infusion

How It Works

• Esomeprazole selectively inhibits the H⁺/K⁺ ATPase enzyme (proton pump) in the stomach lining.

• This blocks the final step of gastric acid secretion, reducing stomach acid production regardless of stimulus (food, histamine, gastrin).

• IV administration allows rapid acid suppression, which is useful when oral intake is not possible.

Common Uses

Esomeprazole injection is generally used for:

• Acute treatment of gastric or duodenal ulcers, especially those associated with upper GI bleeding

• Prevention of rebleeding after endoscopic treatment of peptic ulcers

• Severe gastroesophageal reflux disease (GERD) when oral therapy is not feasible

• Stress ulcer prophylaxis in critically ill patients

• Treatment of Zollinger–Ellison syndrome (severe acid hypersecretion disorder) when oral therapy is not an option

Advantages

• Works quickly to control stomach acid production

• Suitable for patients who cannot swallow pills or are on nil per oral (NPO) status

• Reduces risk of rebleeding in high-risk ulcer patients

• Once stabilized, patients can be switched to oral PPI therapy

Possible Side Effects

Common:

• Headache

• Diarrhea or constipation

• Nausea

• Abdominal discomfort

Less Common but Serious:

• Low magnesium levels (with prolonged use)

• Rare allergic reactions (rash, swelling, breathing difficulty)

• Very rarely, kidney inflammation (interstitial nephritis)

• Risk of Clostridioides difficile infection with long-term use

Precautions

• Use with caution in patients with severe liver disease (dose adjustment may be needed)

• Long-term use should be monitored for risks like vitamin B12 deficiency or bone fractures

• Should not be mixed with other IV medications in the same line unless compatibility is confirmed

• Stop IV once the patient can tolerate oral medication and switch to oral PPI