? Azithromycin (Zithromac®) — A Pharmacist Talks About Its Use
Azithromycin, sold in Japan under the brand name Zithromac®, is a commonly used antibiotic. As a pharmacist, I often explain to patients how it works, how to take it, and what precautions to keep in mind.
Azithromycin belongs to the macrolide class of antibiotics and is mainly used to treat bacterial infections. It is widely used in clinical practice. Whether it is respiratory infections, skin infections, or infections in the urinary, reproductive, or oral systems, doctors choose Azithromycin according to the patient’s condition.
? What Is Azithromycin Used For?
Azithromycin works by fighting bacterial infections. It can be used in the following situations:
Skin or soft tissue infections: Azithromycin helps the body eliminate bacteria faster, reduces redness and pain, and promotes wound healing.
Respiratory infections: For pharyngitis, tonsillitis, acute bronchitis, or pneumonia, Azithromycin inhibits the bacteria causing inflammation, which helps relieve sore throat, cough, and fever.
Urinary or cervical infections: Azithromycin targets the infection directly, reduces inflammation and pain, and helps restore normal urinary and reproductive function.
Lymphatic vessel or lymph node infections: Azithromycin controls bacterial spread, reduces swelling and tenderness, and relieves discomfort quickly.
Secondary infections in chronic respiratory disease: Azithromycin inhibits bacterial growth, reduces sputum and airway inflammation, and lowers the risk of disease worsening.
Sinusitis, periodontitis, or pericoronitis: Azithromycin controls infection, relieves facial or oral pain, and helps inflamed areas recover faster.
In short, whenever a doctor determines that antibacterial treatment is needed, Azithromycin is often recommended.
? How to Take Azithromycin
Patients should strictly follow the doctor’s prescription and avoid changing the dose on their own. Common dosing is:
Adults: 250mg once daily for 3 days (total 750mg) to ensure optimal effect.
Urinary or cervical infections: A single 1000mg dose for rapid infection control.
Pelvic inflammatory disease: Start with injection therapy, then take 250mg orally daily to continue suppressing bacterial growth and support recovery.
⚠️ Reminder: Never stop or increase the dose on your own. Complete the full course as prescribed for the best results.
⚠️ Precautions
Do not use Azithromycin if you are allergic to macrolide antibiotics or similar drugs.
Use caution if you have impaired liver function.
If you have heart disease, Azithromycin may cause arrhythmia. Always follow your doctor’s instructions.
? Pharmacist Tips
Azithromycin can be taken on an empty stomach or after meals, as both allow good absorption.
If you experience rash, nausea, or palpitations after taking the medication, contact your doctor immediately.
Avoid taking Azithromycin with other drugs that may prolong the QT interval.
In summary, take Azithromycin exactly as prescribed. When used correctly, it effectively controls infections and helps the body recover. These tips can help you take your medication safely and confidently.