What Is Amoxicillin?

Amoxicillin (also spelled amoxycillin)

Amoxicillin is a widely used antibiotic that treats a broad range of bacterial infections. It is commonly prescribed for infections of the ears, throat, lungs, sinuses, skin, and urinary tract.
When combined with clarithromycin, amoxicillin is also an effective part of treatment for H. pylori–related stomach ulcers.

Amoxicillin is a penicillin-type antibiotic and is marketed under several brand names, but the generic form is equally effective.

How Amoxicillin Works

Classification: Penicillin-class antibiotic

Amoxicillin works by:

• Blocking the formation of the bacterial cell wall

• Preventing bacteria from linking peptidoglycan chains

• Destroying both gram-positive and gram-negative bacteria

This stops the growth of harmful bacteria and helps the body clear infections more effectively.

Storage Instructions

Store amoxicillin in a cool, dry place, away from heat, moisture, and out of reach of children.

How to Take Amoxicillin

• Take the medication orally, with or without food.

• Try to take it at the same times each day for the best results.

• Follow your doctor’s instructions carefully.

Dosage

• A common adult dose is 500 mg three times daily, but your exact dose may vary based on your condition.
  Always use the dosage prescribed by your healthcare provider.

Overdose

If you suspect an overdose, seek medical attention immediately.

Missed Dose

• Take the missed dose as soon as you remember.

• Skip it if your next dose is approaching.

• Do not double dose.

Warnings & Precautions

Use amoxicillin with caution if you have:

• Asthma

• Mononucleosis

• Kidney or liver disease

• A history of antibiotic-related diarrhea

Amoxicillin may cause mild gastrointestinal upset. Long-term use can increase the risk of yeast (Candida) infections.

Possible Side Effects

• Stomach and digestive discomfort

• Antibiotic-associated diarrhea

• Abdominal pain

• Yeast infections with prolonged use

If symptoms become severe or persistent, contact your doctor.

When Amoxicillin Should Not Be Used

Do not take amoxicillin if you are allergic to:

• Amoxicillin

• Any penicillin-type antibiotic

Allergic reactions require immediate medical attention.

How Long Should You Take Amoxicillin?

Take amoxicillin for the full duration prescribed, even if symptoms improve early.
Stopping too soon can lead to antibiotic resistance or recurrence of the infection.