Duopharma Doxycillin 100mg Tablet
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Overview
Duopharma Doxycillin 100mg Tablet contains doxycycline 100mg, a tetracycline-class antibiotic used to treat a broad range of bacterial infections. It is also widely used at a lower dose over a longer period to manage moderate acne.
Doxycycline works by entering susceptible bacteria and binding to their ribosomes, blocking the step in protein synthesis needed for the bacteria to grow and multiply. This stops the infection from progressing so the body’s own immune system can clear it.
How it Works
Doxycycline binds to the 30S ribosomal subunit inside susceptible bacteria, preventing transfer RNA from attaching at the site needed to build new proteins. Without this protein synthesis, the bacteria cannot grow or reproduce, halting the infection.
Directions for Use
Take Duopharma Doxycillin 100mg Tablet with a full glass of water and remain upright (sitting or standing) for at least 30 minutes afterwards, as lying down too soon can allow the tablet to irritate or ulcerate the oesophagus. Avoid taking it with milk, other dairy products, calcium, iron, antacids, or mineral supplements, as these can bind to doxycycline and reduce how much your body absorbs – space these apart by at least 2-3 hours.
Dosage
The usual adult dose of Duopharma Doxycillin 100mg Tablet is 100mg once or twice daily depending on the type and severity of infection being treated; for long-term acne control, a lower dose is often used over several weeks to months. Your doctor will determine the exact dose and duration for your condition, and the full course should be completed even if you feel better before it ends.
Shelf Life
Use this product before the expiry date stated on the packaging. Do not use the medicine if the expiry date has passed.
Storage Instructions
Store below 30°C in a dry place, away from direct sunlight and out of reach of children.
Side Effects
- Nausea or vomiting
- Diarrhea
- Skin sensitivity to sunlight (photosensitivity)
- Loss of appetite
- Headache
- Temporary discoloration of teeth in children
- Mild skin rash
Contraindications
- Known hypersensitivity to doxycycline or other tetracycline-class antibiotics
- Children under 8 years of age (can cause permanent tooth discolouration and affect bone growth)
- Pregnancy (can affect the developing baby’s teeth and bones)
- Severe liver impairment
Drug / Food Interactions
- Dairy products, calcium, iron, antacids, and mineral supplements reduce doxycycline absorption – take at least 2-3 hours apart
- May reduce the effectiveness of hormonal contraceptives – use an additional non-hormonal method during treatment
- May enhance the blood-thinning effect of warfarin, requiring closer monitoring
- Increased sun sensitivity means combining with other photosensitising medicines raises the risk of sunburn
Quick Tips
- Take with a full glass of water and stay upright for at least 30 minutes afterwards
- Avoid taking this medicine right before lying down or going to bed
- Space this medicine at least 2-3 hours apart from dairy, calcium, iron, or antacids
- Use sunscreen and protective clothing, and avoid excessive sun exposure
- Complete the full course even if you feel better, unless your doctor advises otherwise
- Tell your doctor if you are or could be pregnant before starting this medicine
Frequently Asked Questions
What is Duopharma Doxycillin 100mg Tablet used for?
Duopharma Doxycillin 100mg Tablet is used to treat a range of bacterial infections, including respiratory and skin infections, certain sexually transmitted infections, and long-term low-dose use for moderate acne. Your doctor will confirm the specific reason it has been prescribed for you.
Why do I need to stay upright after taking this medicine?
Doxycycline tablets can irritate or even ulcerate the oesophagus if they remain in contact with it too long. Taking the tablet with a full glass of water and staying upright (not lying down) for at least 30 minutes helps it pass through safely.
Can I take this medicine with milk or dairy products?
No. Dairy products, as well as calcium, iron, antacids, and mineral supplements, can bind to doxycycline and significantly reduce its absorption. Space these apart from your dose by at least 2-3 hours.
Is this medicine safe during pregnancy or for young children?
No. Doxycycline is not recommended in pregnancy or in children under 8 years old, as it can affect the developing baby’s or child’s teeth (permanent discolouration) and bone growth. Speak to your doctor about safer alternatives if this applies to you.
How long does it take to see improvement in acne with this medicine?
When used for acne, doxycycline is usually taken for several weeks to months at a lower dose, and visible improvement is often gradual over 4-8 weeks. Your doctor will advise on the expected course length.
What should I do if I miss a dose of Duopharma Doxycillin 100mg Tablet?
Take the missed dose as soon as you remember, unless it is almost time for your next dose – in that case, skip the missed dose and continue your regular schedule. Do not double the dose.
Can I buy Duopharma Doxycillin 100mg Tablet from DoctorOnCall?
Yes, Duopharma Doxycillin 100mg Tablet is available through DoctorOnCall, a licensed online pharmacy serving our Malaysian and Singaporean customers. As this is a prescription medicine, you will need to complete an online consultation so a doctor can assess your suitability and issue a valid prescription before the order is processed. This ensures the medicine is appropriate for your condition and used under proper medical supervision, whether you are ordering from Malaysia or Singapore.
Is the medication provided by DoctorOnCall genuine and safe to use?
DoctorOnCall sources its medicines through appropriate licensed pharmacy supply channels for our Malaysian and Singaporean customers. All orders are dispensed and checked by a registered pharmacist before delivery. Always use Duopharma Doxycillin 100mg Tablet according to your doctor’s instructions and the information provided with the product.
What payment methods does DoctorOnCall accept?
We accept payment via Online Banking, Credit Card, and e-Wallets (Boost, GrabPay) for our Malaysian and Singaporean customers, so you can choose whichever method is most convenient for you at checkout.
Does DoctorOnCall provide an installment payment plan for Duopharma Doxycillin 100mg Tablet?
DoctorOnCall provides an installment payment plan for eligible Malaysian and Singaporean customers, where applicable. Available plans, eligibility, and terms can vary by market, so please contact DoctorOnCall Customer Service for the latest information on installment options for your order.
Is delivery free, and how much does shipping for Duopharma Doxycillin 100mg Tablet cost?
Delivery charges may vary for our Malaysian and Singaporean customers depending on your delivery location and the applicable order terms at the time of purchase. For the most accurate and up-to-date delivery fee information, please contact DoctorOnCall Customer Service before placing your order.
How long does delivery take for Duopharma Doxycillin 100mg Tablet?
Our Malaysian customers can generally expect delivery within 3-5 working days, while our Singaporean customers generally receive their orders within 5-7 working days. These are expected timeframes rather than guarantees, and actual delivery time may vary depending on your delivery location, order processing time, courier operations, and whether the order falls on a weekend or public holiday.
What is DoctorOnCall’s shipping, return, or cancellation policy for Duopharma Doxycillin 100mg Tablet?
Shipping, return, and cancellation terms may vary for our Malaysian and Singaporean customers depending on the product and your order details. Please refer to DoctorOnCall’s Shipping & Delivery Policy and Return, Refund & Exchange Policy, or contact Customer Service, for the specific terms that apply to your order.
Ingredients / Active Ingredients
- Doxycycline 100mg
Safety Advice
Pregnancy
This medicine is not considered safe during pregnancy and should be avoided.
Breastfeeding
Use with caution. Monitor infant for potential adverse reactions.
Kidney
Generally safe, but caution may be required in some patients.
Liver
Use cautiously. Liver function monitoring may be required.
Alcohol
It is not advisable to consume alcohol while taking this medicine.
Driving
This medicine is generally safe and should not impair your driving ability.
Medical Review
