Description
Nordox 100mg contains Doxycycline (as Hyclate), a tetracycline antibiotic used to treat bacterial infections. It works by attaching to the 30S ribosomal subunit inside bacterial cells, blocking protein production. This prevents bacteria from multiplying and supports the body in fighting infection.
Uses
Doctors prescribe Nordox 100mg for:
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Chest, lung, and nasal infections (bronchitis, pneumonia, sinusitis)
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Kidney and bladder infections (cystitis, urethritis)
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Skin infections including acne
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Eye infections
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Sexually transmitted diseases (gonorrhea, chlamydia, syphilis)
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Rickettsial infections (Q fever, tick- or louse-borne fevers)
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Malaria (when chloroquine is not effective)
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Other infections such as cholera, brucellosis, leptospirosis, and psittacosis
How to Use
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Take with a full glass of water.
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Best taken while sitting or standing to prevent throat irritation.
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May be taken with food, but avoid dairy products near dosing.
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Follow the prescribed dose exactly.
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Complete the full course even if symptoms improve.
When Not to Use
Do not use if you have:
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Allergy to doxycycline or other tetracyclines
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Severe liver disease
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Pregnancy or breastfeeding (unless strictly prescribed)
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Children under 8 years (may affect teeth and bone growth)
Precautions & Warnings
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Increases sensitivity to sunlight – avoid direct sun and tanning lamps.
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Use with caution if you have myasthenia gravis or systemic lupus erythematosus (SLE).
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Take with plenty of fluids to reduce risk of esophageal irritation.
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Do not use expired capsules, as old tetracyclines can damage kidneys.
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Always use under medical supervision; avoid self-medication.
Possible Side Effects
Common:
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Headache, dizziness
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Nausea, vomiting, stomach upset
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Diarrhea
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Skin rash or itching
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Photosensitivity (sunlight reaction)
Rare:
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Increased pressure inside the skull (severe headache, vision changes)
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Liver changes
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Blood disorders (unusual bruising, persistent fatigue)
Seek urgent medical care if severe side effects occur.
Drug Interactions
Avoid taking with:
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Penicillin antibiotics (reduced effect)
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Rifampicin, carbamazepine, phenytoin (reduce doxycycline levels)
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Warfarin (higher bleeding risk)
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Antacids or supplements containing iron, zinc, calcium, or magnesium (reduce absorption)
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Retinoids (risk of raised intracranial pressure)
Storage
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Store at room temperature, away from sunlight and moisture.
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Keep sealed in original packaging.
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Keep out of children’s reach.
Doctor’s Overview — Dr. Imran Qureshi, MBBS, FCPS
Doxycycline is an antibiotic used for chest and urinary tract infections, acne, and some sexually transmitted diseases. It works against many bacteria but should always be taken as directed, with the full course completed. Patients are advised to limit sun exposure during treatment, as the medicine can make the skin more sensitive to sunlight.
Disclaimer
This overview is for educational purposes only. Doxycycline is a prescription medicine and should be used only under the supervision of a qualified healthcare professional.

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