Always follow your doctor’s instructions. Doxycycline dosage varies significantly depending on the infection being treated and your individual health. Typical adult dosages range from 100mg to 200mg daily, often divided into two doses. Children’s dosages are weight-based and should be determined by a pediatrician.
Oral Administration
Take doxycycline with a full glass of water, preferably sitting upright. Avoid taking it with dairy products, antacids, or iron supplements, as these can reduce absorption. Consume doxycycline at least one hour before or two hours after these substances.
Specific Conditions
Dosage varies greatly by condition. For example, treatment of acne may use lower daily dosages over a longer period, while severe infections may require higher doses. Your doctor will tailor your treatment plan.
Missed Doses
If you miss a dose, take it as soon as you remember unless it’s almost time for your next dose. Never double up on doses. Maintain consistent dosing for the full prescribed duration to ensure optimal results.
Potential Side Effects
Common side effects include nausea, vomiting, diarrhea, and heartburn. More serious side effects are rare but should be reported to your doctor immediately. These include severe allergic reactions, difficulty swallowing, and unusual bruising or bleeding.
| Acne | 50-100mg once daily | Variable, often months |
| Chlamydia | 100mg twice daily | 7 days |
| Lyme Disease | 200mg once daily | 14-21 days |
| Rocky Mountain Spotted Fever | 100mg twice daily | 7-10 days |
Important Note
This information is for guidance only and does not replace professional medical advice. Always consult your doctor or pharmacist before starting or changing any medication, especially if you have pre-existing health conditions or are taking other medications.


