Informational only — Not medical advice. Always consult a licensed healthcare provider.

Community data Updated 2 months ago
100 mg
Strip (10): ৳25.00 Box (10 × 10 = 100): ৳250.00
৳2.50 per tablet

Prices are indicative MRP and may vary by pharmacy. Trend compares against the last recorded price.

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From ৳2.50 per tablet
Available as: 100 mg · 10 x 10

Indications & Uses

Pharmacology

Doxycycline Hydrochloride is a semisynthetic tetracycline antibiotic with broad spectrum activity. It is primarily a bacteriostatic antibiotic. It has a similar spectrum of activity to other tetracyclines but in particular is more active against Staphylococcus aureus and Nocardia. The drug is often active against penicillin-resistant strains of Staphylococcus aureus and against strains of those organisms that are resistant to other Tetracyclines. Certain Gram-negative strains of E. coli, Proteus mirabilis and Klebsiella, which are often resistant to Tetracycline, may be sensitive to Doxycycline. In addition, 70-90% of the various anaerobes are sensitive to Doxycycline and Bacteroides fragilis is more likely to be sensitive to Doxycycline than to other tetracyclines.Doxycycline is active against most strains of Haemophilus influenzaeand is particularly useful for infections with H. ducreyi, Actinomyces, Brucella and Vibrio cholerae. It is also active against Nocardia, Chlamydia, Mycoplasma and a wide range of Rickettsiae. Doxycycline is active against spirochetes such as Borellia recurrentis, Treponema pallidum and Treponema pertenue. It is also active against Plasmodium falciparum.

Dosage Reference

Reference Information Only

Dosages shown are general references from official sources. Always consult your doctor or pharmacist for personalized dosing.

Adults:

Dosage Usual dose: 200 mg on first day, then 100 mg daily for 7-10 days.Severe infections (including refractory urinary tract infections): 200 mg daily for 10 days. Acne: 100 mg daily. Uncomplicated genital chlamydia, non-gonococcal urethritis: 100 mg twice daily for 7-21 days (14-21 days in pelvic inflammatory disease).

Side Effects

Nausea, vomiting, diarrhoea, skin rashes, hemolytic anaemia, eosinophilia may be reported.

Cautions & Contraindications

Warnings & Precautions

The use of drugs of the tetracycline class during tooth development (last half of pregnancy, infancy and childhood to the age of 8 years) may cause permanent discoloration of teeth. Tetracyclines drugs, therefore should not be used in this age group.

Contraindications

Doxycycline is contraindicated to the patients who have shown hypersensitivity to any of the tetracyclines. Doxycycline is contraindicated to the children under 8 years of age. It is also contraindicated to pregnant women and to the lactating mothers.

Pregnancy & Breastfeeding

Doxycycline should be avoided in pregnant women, because of the risk of both staining and effect on bone growth in the foetus. Doxycyclines enter breast milk, and mothers taking these drugs should not breastfeed their child.

⚠️ Talk to your doctor before taking any medicine during pregnancy or while breastfeeding.

Storage

Keep all medicines out of reach of children. Store in a cool and dry place, protected from light.

Drug Interactions

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Moderate Carbamazepine
Moderate Doxycycline
Moderate Iron
Moderate Phenytoin
Moderate Magnesium

Common questions about Nadox 100 mg

What is Nadox 100 mg Tablet?

Nadox 100 mg Tablet is a medicine that contains Doxycycline Hydrochloride. It is made by National Drug Company Ltd. It belongs to the Tetracycline group of drugs group of medicines.

What is Nadox used for?

Nadox is used for: Pneumonia, Bronchitis, Sinusitis, Tonsillitis, Fever, Diarrhea, Urinary Tract Infection, Respiratory Tract Infection, Viral Infection, Amoebiasis.

What are the side effects of Nadox?

Nausea, vomiting, diarrhoea, skin rashes, hemolytic anaemia, eosinophilia may be reported.

Can I take Nadox during pregnancy or while breastfeeding?

Doxycycline should be avoided in pregnant women, because of the risk of both staining and effect on bone growth in the foetus. Doxycyclines enter breast milk, and mothers taking these drugs should not breastfeed their child. Talk to your doctor before taking any medicine during pregnancy or while breastfeeding.

How should I store Nadox?

Keep all medicines out of reach of children. Store in a cool and dry place, protected from light.

Can I take other medicines with Nadox?

Some medicines can interact with Doxycycline Hydrochloride, for example: Carbamazepine, Doxycycline, Iron, Phenytoin, Magnesium. Tell your doctor or pharmacist about every medicine you take.

Is there a cheaper medicine with the same ingredient?

Nadox is already among the lowest-priced brands of Doxycycline Hydrochloride at this strength.

Do I need a prescription for Nadox?

Nadox is a prescription (Rx) medicine. Take it as your doctor advises.

Last updated: 18 Aug 2026