Tab doxycycline 100 mg?

Doxycycline 100 mg Tablet – Quick Reference

| Category | Key Points |
|----------|------------|
| Drug Class | Tetracycline antibiotic (broad‑spectrum). |
| Common Uses | • Acute bacterial infections (e.g., respiratory tract, urinary tract, skin & soft tissue)
• Chronic conditions (acne vulgaris, rosacea)
• Prophylaxis & treatment of tick‑borne illnesses (Lyme disease, Rocky Mountain spotted fever)
• Certain parasitic infections (e.g., malaria prophylaxis in specific regions) |
| Typical Adult Dose | • 100 mg once daily or twice daily (depending on infection type).
• For acne/rosacea: usually 100 mg twice daily for 4–6 weeks, then 100 mg once daily as maintenance.
• For Lyme disease: 200 mg twice daily for 2–3 weeks (or per protocol). |
| Pediatric Dose | • 50 mg or 100 mg twice daily (weight‑based dosing 2–4 mg/kg/dose; max 100 mg).
• Always follow pediatric prescribing guidelines. |
| Route | Oral (tablet). |
| Contraindications | • Known hypersensitivity to doxycycline or other tetracyclines.
• Pregnancy (category C – avoid unless clearly needed).
• Young children < 8 yrs (due to teeth discoloration & bone growth concerns). |
| Key Precautions | • Avoid dairy products, antacids, iron or calcium supplements within 2 hrs of dosing.
• Sun‑sensitivity: use sunscreen & protective clothing.
• Monitor for photosensitivity reactions.
• Use with caution in patients with renal/hepatic impairment. |
| Common Adverse Effects | • GI upset (nausea, vomiting, diarrhea).
• Oral thrush.
• Headache, dizziness.
• Rarely: hepatotoxicity, vestibular toxicity. |
| Drug Interactions | • Antacids/Calcium/Iron: ↓ absorption.
• Warfarin: ↑ INR risk.
• Oral contraceptives: potential reduced efficacy (rare).
• Other antibiotics (e.g., macrolides): additive myotoxicity risk. |
| Monitoring | • Renal function if prolonged therapy.
• Watch for signs of antibiotic resistance or treatment failure. |
| Storage | • Keep in the original container, at room temperature, away from moisture, light, and heat. |
| Patient Advice | • Take with a full glass of water.
• If you miss a dose, take it as soon as remembered (unless it’s near the next dose).
• Finish the full course unless directed otherwise by your clinician. |

---

Bottom Line

• Doxycycline 100 mg is a versatile, oral antibiotic used for a range of bacterial infections, acne, and certain tick‑borne illnesses.
  
• Dose and duration are highly dependent on the specific condition and patient factors.
  
• Because of potential side effects (especially GI upset and photosensitivity) and interactions (particularly with antacids and iron), it’s important to follow your prescriber’s instructions closely and to discuss any other medications you’re taking.
  
• Always consult your healthcare professional before starting, stopping, or changing the dose of doxycycline.