Doxycycline 100mg Capsules is a broad-spectrum tetracycline antibiotic used to treat a variety of bacterial infections. It is commonly prescribed for respiratory tract infections, skin infections, acne, urinary tract infections, and certain sexually transmitted infections caused by susceptible bacteria.
Prescription Only Medicine (POM).
Key Benefits
- Treats a wide range of bacterial infections
- Commonly used in acne treatment
- Effective for respiratory tract infections
- May be prescribed for certain sexually transmitted infections (STIs)
- Convenient oral capsule formulation
- Helps eliminate susceptible bacteria and reduce infection symptoms when used appropriately
What It Is / How It Works
What is Doxycycline 100mg?
Doxycycline is a tetracycline-class antibiotic that helps treat infections caused by susceptible bacteria. It is widely used in both acute and chronic bacterial infections.
How It Works
Doxycycline works by inhibiting bacterial protein synthesis, preventing bacteria from growing and multiplying. This allows the body’s immune system to clear the infection.
Uses / Indications
Doxycycline 100mg Capsules may be prescribed for:
Respiratory Tract Infections
- Pneumonia
- Bronchitis
- Sinusitis
Skin Conditions
- Acne vulgaris
- Certain bacterial skin infections
Urinary Tract Infections
- Susceptible urinary tract infections
Sexually Transmitted Infections
- Chlamydia infections
- Certain other bacterial STIs
Other Uses
- Eye infections caused by susceptible bacteria
- Tick-borne infections
- Malaria prevention in specific circumstances
- Other infections as determined by a healthcare provider
Dosage & Administration
Prescription Only Medicine
Use only as prescribed by a healthcare provider.
General Guidance
- Take exactly as directed by your healthcare provider.
- Swallow the capsule with a full glass of water.
- Remain upright for at least 30 minutes after taking the medication.
- Can be taken with food if stomach upset occurs.
- Complete the full prescribed course even if symptoms improve before treatment ends.
Do not skip doses or stop treatment early unless advised by your healthcare provider.
Possible Side Effects
Common side effects may include:
- Nausea
- Vomiting
- Diarrhea
- Stomach discomfort
- Loss of appetite
- Skin sensitivity to sunlight (photosensitivity)
Less common but serious side effects include:
- Severe allergic reactions
- Severe skin reactions
- Persistent diarrhea
- Difficulty swallowing
- Liver-related complications
Seek immediate medical attention if serious side effects occur.
Warnings & Precautions
Do Not Use If:
- Allergic to doxycycline or tetracycline antibiotics
Consult Your Healthcare Provider Before Use If:
- You are pregnant or planning pregnancy
- You are breastfeeding
- You have liver disease
- You are taking other prescription medicines
Important Safety Information
- Avoid excessive sunlight or UV exposure while taking doxycycline because it may increase sensitivity to sunlight.
- Do not take at the same time as antacids, iron supplements, calcium supplements, or zinc products unless advised by your healthcare provider.
Pediatric Use
Doxycycline is generally not recommended for children under 8 years of age except when specifically prescribed due to the risk of permanent tooth discoloration.
Storage Instructions
- Store below 25–30°C.
- Keep in the original packaging.
- Protect from moisture and direct sunlight.
- Keep out of reach of children.
- Do not use after the expiry date.
Mandatory Disclaimer
This medicine requires a valid prescription. Do not use without medical advice.






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