Product Description
Diphenhydramine 50mg capsules are a common over-the-counter medication used to treat various symptoms.
Product Description
Diphenhydramine is a first-generation antihistamine that works by blocking the action of histamine, a chemical released by the body during allergic reactions. It also has anticholinergic (drying) effects and can cause drowsiness.
Indications
Diphenhydramine capsules are used for:
- Allergy relief: To relieve symptoms of allergies, hay fever, and the common cold, including runny nose, itchy nose or throat, sneezing, and itchy, watery eyes.
- Motion sickness: To prevent and treat nausea, vomiting, and dizziness caused by motion sickness.
- Sleep aid: To help you relax and fall asleep.
Dosage Recommendation
The recommended dosage for adults and children 12 years and older is one capsule every 4-6 hours, not to exceed 6 doses in 24 hours. For children under 12 years, consult a doctor.
Precautions
Diphenhydramine should be used with caution in patients with:
- Glaucoma: Diphenhydramine can worsen glaucoma.
- Prostatic hypertrophy: Diphenhydramine can worsen difficulty urinating due to an enlarged prostate.
- Breathing problems: Diphenhydramine can worsen breathing problems like asthma, emphysema, or chronic bronchitis.
- Other medical conditions: Talk to your doctor before using diphenhydramine if you have heart problems, high blood pressure, liver disease, seizures, stomach or intestinal problems, overactive thyroid, or any other medical condition.
Adverse Reactions
Common side effects of diphenhydramine include:
- Drowsiness: This is the most common side effect.
- Dizziness: You may feel dizzy or lightheaded.
- Constipation: Diphenhydramine can cause constipation.
- Stomach upset: You may experience nausea, vomiting, or stomach pain.
- Blurred vision: Diphenhydramine can blur your vision.
- Dry mouth: Your mouth may feel dry.
Serious side effects can occur, including:
- Anaphylaxis: A severe allergic reaction that can be life-threatening.
- QT prolongation: A heart rhythm abnormality that can increase the risk of sudden cardiac death.
- Seizures: Diphenhydramine can cause seizures, especially in overdose.
- Toxic psychosis: Diphenhydramine can cause a state of confusion and disorientation that can be mistaken for psychosis.
If you experience any serious side effects, seek medical attention immediately.
Note: This information is for general knowledge and does not replace professional medical advice. Always consult your doctor or pharmacist before taking any medication.
