Here’s the complete medicine profile for Doxycycline Powder for Injection 100 mg 👇
💉 Doxycycline Powder for Injection 100 mg
📘 Description:
- Doxycycline is a semisynthetic tetracycline-class antibiotic.
- Injectable form is supplied as lyophilized powder (100 mg per vial) for reconstitution and IV infusion.
- Mechanism: Inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit → prevents aminoacyl-tRNA attachment.
- Has bacteriostatic activity against a wide range of Gram-positive, Gram-negative, atypical bacteria, and some protozoa.
📄 Prescription / Indications:
Used in serious infections when oral therapy is not possible:
- Severe rickettsial infections – scrub typhus, spotted fever, murine typhus
- Leptospirosis (when oral route not feasible)
- Brucellosis (with other antibiotics)
- Anthrax (including inhalational, post-exposure prophylaxis)
- Plague & cholera (severe cases)
- Malaria (severe, resistant cases in combination therapy)
- Respiratory tract infections due to atypical organisms (Mycoplasma, Chlamydia)
- ICU infections where oral route not tolerated
🌿 Nature / Drug Class:
- Antibiotic – Tetracycline group
- Broad-spectrum, bacteriostatic
✅ Advantages:
- IV option available for critically ill patients unable to take oral medication
- Wide coverage – useful in tropical infections & emerging zoonotic diseases
- Alternative to chloramphenicol in severe rickettsial illness
- Can be used in bioterrorism-related infections (anthrax, plague, tularemia)
⚠️ Precautions:
Contraindications:
- Children <8 years (tooth discoloration, bone growth inhibition)
- Pregnancy & breastfeeding
- Hypersensitivity to tetracyclines
Cautions:
- Administer IV slowly (over 1–4 hours) to avoid phlebitis
- Do not give IM (causes severe pain & tissue damage)
- Avoid with antacids, calcium, magnesium, iron (reduce absorption if switched later to oral)
- Monitor liver & renal function in prolonged therapy
- Advise sun protection (photosensitivity risk)
Adverse effects:
- Phlebitis at injection site
- GI upset, diarrhea (less in IV compared to oral)
- Hepatotoxicity (rare but possible with high dose)
- Photosensitivity
- Rare: intracranial hypertension, superinfection with resistant organisms
📦 Common Packaging:
- Glass vial containing lyophilized doxycycline powder 100 mg
- Usually supplied with ampoule of sterile water for reconstitution
- For IV infusion: dilute further in compatible fluid (e.g., 0.9% saline or 5% dextrose)
❄️ Storage Conditions:
- Store below 25°C, protected from light
- Use immediately after reconstitution
- Discard unused portion – single-use vial