Nexium 40mg Capsules

Esomeprazole is a proton pump inhibitor (PPI) that specifically inhibits the H+/K+-ATPase (proton pump) in the gastric parietal cells. It is the S-isomer of omeprazole. By irreversibly binding to the proton pump, it blocks the final step in acid production, leading to a profound and long-lasting inhibition of gastric acid secretion.

Urgent Side Effects: Seek Medical Help Right Away

Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor or seek medical attention immediately:

Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of electrolyte problems, including:
+ Mood changes
+ Confusion
+ Muscle pain, cramps, or spasms
+ Weakness
+ Shakiness
+ Change in balance
+ Abnormal heartbeat
+ Seizures
+ Loss of appetite
+ Severe upset stomach or vomiting
Signs of kidney problems, such as:
+ Inability to pass urine
+ Change in urine output
+ Blood in the urine
+ Sudden weight gain
Severe dizziness or fainting
Bone pain
Significant weight loss
Symptoms of C. difficile-associated diarrhea (CDAD), including:
+ Stomach pain or cramps
+ Very loose or watery stools
+ Bloody stools
+ Do not attempt to treat diarrhea without consulting your doctor
Severe skin reactions, including:
+ Stevens-Johnson syndrome (SJS)
+ Toxic epidermal necrolysis (TEN)
+ Other serious reactions, which can affect body organs and be life-threatening
+ Seek medical help immediately if you experience:
- Red, swollen, blistered, or peeling skin
- Red or irritated eyes
- Sores in your mouth, throat, nose, eyes, genitals, or skin
- Fever
- Chills
- Body aches
- Shortness of breath
- Swollen glands

Other Possible Side Effects

Like all medications, this drug can cause side effects. While many people may not experience any side effects or only minor ones, it is essential to consult your doctor if you notice any of the following:

Headache
Stomach pain or diarrhea
Constipation
Gas
Dry mouth
Upset stomach

This list is not exhaustive, and you may experience other side effects. If you have concerns or questions, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following:

Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the symptoms you experienced.
If you are currently taking any of the following medications: Atazanavir, Clopidogrel, Methotrexate, Nelfinavir, Rifampin, Rilpivirine, St. John's Wort, or Warfarin.
* If you have a history of any of the following health issues:
+ Black or bloody stools
+ Heartburn accompanied by lightheadedness, sweating, dizziness, or wheezing
+ Chest pain
+ Shoulder pain with shortness of breath
+ Pain that radiates to the arms, neck, or shoulders
+ Lightheadedness
+ Excessive sweating
+ Vomiting blood
+ Difficulty or pain when swallowing food

Please note that this list is not exhaustive, and it is crucial to discuss all your medications (including prescription, over-the-counter, natural products, and vitamins) and health problems with your doctor and pharmacist. This will help ensure your safety while taking this medication. Never start, stop, or adjust the dosage of any medication without first consulting your doctor.

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. Adhere to the prescribed duration of treatment, as taking this drug for longer than recommended by your doctor may have adverse effects. Additionally, be aware that this medication may interfere with certain laboratory tests, so it is crucial to notify all your healthcare providers and lab personnel that you are taking this drug.

Patients with osteoporosis (weak bones) should be cautious, as this medication may increase the risk of fractures in the hip, spine, and wrist. This risk may be higher if you take high doses, use the medication for more than a year, or are over 50 years old. If you have risk factors for osteoporosis, such as alcohol consumption, smoking, steroid use, seizure medication, or a family history of osteoporosis, discuss your risks with your doctor.

Prolonged use of this medication (typically more than 3 months) may lead to rare but potentially serious side effects, including low magnesium levels. Most cases occur after at least 1 year of treatment, which may cause other electrolyte problems. Your doctor may recommend regular blood tests to monitor your condition.

Long-term treatment with this medication (usually more than 3 years) may also cause low vitamin B-12 levels. Be aware of the symptoms, which include shortness of breath, dizziness, abnormal heartbeat, muscle weakness, pale skin, tiredness, mood changes, or numbness and tingling in the arms and legs. If you experience any of these symptoms, contact your doctor immediately.

In rare cases, this medication has been associated with the development or worsening of lupus. If you have lupus, inform your doctor, and seek medical attention immediately if you notice any symptoms, such as a rash on the cheeks or other body parts, changes in skin color, increased sensitivity to sunlight, muscle or joint pain, chest pain, shortness of breath, or swelling in the arms and legs.

Taking this medication for more than 1 year may increase the risk of developing stomach growths called fundic gland polyps. If you have concerns, discuss them with your doctor.

If you are pregnant, planning to become pregnant, or breastfeeding, it is essential to consult with your doctor to weigh the benefits and risks of this medication to both you and your baby.

• Nelfinavir
• Atazanavir

• Clopidogrel (reduced antiplatelet effect)
• Methotrexate (increased methotrexate levels)
• Erlotinib (decreased erlotinib absorption)
• Dasatinib (decreased dasatinib absorption)
• Nilotinib (decreased nilotinib absorption)
• Mycophenolate Mofetil (decreased mycophenolic acid exposure)

• Iron salts (decreased absorption)
• Ketoconazole (decreased absorption)
• Itraconazole (decreased absorption)
• Posaconazole (decreased absorption)
• Digoxin (increased digoxin absorption)
• Tacrolimus (increased tacrolimus levels)
• Warfarin (increased INR/bleeding risk, especially with concomitant use)
• Citalopram (increased citalopram exposure)
• Diazepam (decreased diazepam clearance)

• Not typically classified as minor for PPIs; general caution with drugs requiring acidic gastric pH for absorption.

• Persistent or worsening heartburn/acid reflux symptoms
• New or worsening abdominal pain, nausea, vomiting, or diarrhea
• Signs of hypomagnesemia (e.g., muscle cramps, tremors, tetany, arrhythmias, seizures)
• Signs of C. difficile-associated diarrhea (e.g., severe, watery diarrhea, fever, abdominal cramps)
• Unexplained weight loss, dysphagia, odynophagia, GI bleeding (red flag symptoms requiring further investigation)

Esomeprazole is generally considered to have a low risk during pregnancy. Human data from observational studies do not suggest an increased risk of major birth defects or other adverse outcomes. Use only if clearly needed and the potential benefit outweighs the potential risk.

Esomeprazole is excreted into human breast milk in small amounts. The amount ingested by the infant is considered low. Generally considered compatible with breastfeeding, but monitor the infant for any signs of adverse effects (e.g., gastrointestinal upset).

Approved for use in infants (1-11 months) and children (1-17 years) for specific indications like GERD and erosive esophagitis. Dosing is weight-based and age-specific. Long-term safety data in pediatric populations is limited; use the lowest effective dose for the shortest duration necessary.

No specific dosage adjustment is required based solely on age. However, elderly patients may be at increased risk for certain adverse effects associated with long-term PPI use, such as bone fractures, C. difficile infection, and hypomagnesemia. Monitor closely.

• Esomeprazole is the S-isomer of omeprazole and may offer slightly improved bioavailability and acid suppression in some individuals, particularly those who are extensive metabolizers via CYP2C19.
• For optimal efficacy, take esomeprazole at least 1 hour before the first meal of the day.
• Long-term use (typically >1 year) of PPIs has been associated with an increased risk of bone fractures (hip, wrist, spine), C. difficile infection, hypomagnesemia, and vitamin B12 deficiency. Prescribe the lowest effective dose for the shortest duration required.
• Patients should be advised not to abruptly discontinue PPIs after long-term use, as this can lead to rebound acid hypersecretion and worsening symptoms. Tapering may be considered.
• Consider alternative therapies or further diagnostic workup if symptoms persist despite adequate PPI therapy.

• Other Proton Pump Inhibitors (PPIs): Omeprazole, Lansoprazole, Pantoprazole, Rabeprazole, Dexlansoprazole
• H2-receptor antagonists (H2RAs): Famotidine, Ranitidine (if available), Cimetidine
• Antacids (for symptomatic relief)
• Prokinetics (e.g., metoclopramide, for specific motility disorders)
• Sucralfate (for ulcer protection)

If your symptoms or health issues persist or worsen, it is essential to contact your doctor promptly. To ensure safe and effective treatment, never share your medication with others or take someone else's medication.

This medication is accompanied by a Medication Guide, which provides crucial information for patients. It is essential to read this guide carefully and review it again whenever your prescription is refilled. If you have any questions or concerns about this medication, consult your doctor, pharmacist, or other healthcare provider for guidance.

In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. Be prepared to provide detailed information about the overdose, including the medication taken, the amount, and the time it occurred, to facilitate prompt and effective treatment.