Indclav

# Indclav (Amoxicillin/Clavulanate) ## Overview - **Classification**: Penicillin antibiotic combined with a Beta-lactamase inhibitor. - **Mechanism**: Amoxicillin inhibits bacterial cell wall synthesis. Clavulanate inactivates bacterial beta-lactamase enzymes, protecting amoxicillin from degradation. ## Primary Indications 1. **Bacterial Sinusitis**: Acute bacterial rhinosinusitis. 2. **Otitis Media**: Acute otitis media. 3. **Lower Respiratory Tract Infections**: Community-acquired pneumonia (CAP), acute bacterial exacerbations of chronic bronchitis. 4. **Skin and Soft Tissue Infections**: Animal/human bite wounds, cellulitis. 5. **Urinary Tract Infections (UTIs)**: Uncomplicated UTIs. ## Adult Dosing ### Standard Dosing **Bacterial Sinusitis, Otitis Media, Lower Respiratory Tract Infections, Skin/Soft Tissue Infections, UTIs** - **Dose**: **875 mg/125 mg** (amoxicillin/clavulanate) or **500 mg/125 mg** - **Frequency**: **BID** (for 875/125 mg) or **TID** (for 500/125 mg) - **Route**: Oral - **Duration**: 7-10 days (uncomplicated), up to 14 days for severe infections. ### Dose Adjustments - **Renal Impairment**: - CrCl >30 mL/min: No adjustment. - CrCl 10-30 mL/min: **500 mg/125 mg** every **12 hours**. - CrCl <10 mL/min: **500 mg/125 mg** every **24 hours**. - Hemodialysis: **500 mg/125 mg** every **24 hours**, with an additional dose during/after dialysis. - **Hepatic Impairment**: Use with caution. Monitor liver function regularly. - **Elderly Patients**: Adjust dose based on renal function. ## Pediatric Dosing (based on amoxicillin component) Pediatric formulations are often suspensions (e.g., 200 mg/28.5 mg per 5 mL, 400 mg/57 mg per 5 mL). ### Neonates (0-28 days) - **Dose**: Not routinely recommended due to limited data and immature renal function. - **Special Notes**: Use only if clearly indicated by infectious disease specialist; dosing is complex. ### Infants (1-12 months) - **Indication (e.g., AOM, Sinusitis)**: - **Dose**: **90 mg/kg/day** (amoxicillin component) - **Frequency**: Divided **every 12 hours** (BID). - **Maximum**: **400 mg amoxicillin** per dose (from 400 mg/57 mg/5 mL suspension). ### Children (1-12 years) - **Indication (e.g., AOM, Sinusitis, LRTI)**: - **Dose**: **90 mg/kg/day** (amoxicillin component) - **Frequency**: Divided **every 12 hours** (BID). - **Maximum**: **875 mg amoxicillin** per dose (or adult dose equivalent). - **Indication (e.g., Skin/Soft Tissue, Uncomplicated UTI)**: - **Dose**: **45 mg/kg/day** (amoxicillin component) - **Frequency**: Divided **every 12 hours** (BID). - **Maximum**: **875 mg amoxicillin** per dose. - **Special Notes**: Use suspensions for younger children; chewable tablets for older children. ### Adolescents (13-18 years) - **Dose**: Generally follow **adult dosing** recommendations. - **Maximum**: **875 mg/125 mg BID**. ## Safety Information ### Contraindications - **Absolute**: History of **severe hypersensitivity reaction** to penicillin (e.g., anaphylaxis, Stevens-Johnson syndrome). - **Absolute**: History of **cholestatic jaundice/hepatic dysfunction** associated with amoxicillin/clavulanate. - **Relative**: History of mononucleosis (increased risk of maculopapular rash). ### Common Adverse Effects - **Very Common (>10%)**: Diarrhea, Nausea. - **Common (1-10%)**: Vomiting, Rash, Urticaria, Vaginitis, Headache, Abdominal pain. - **Serious but Rare**: Clostridium difficile-associated diarrhea (CDAD), severe allergic reactions (anaphylaxis, SJS, TEN), cholestatic jaundice, hepatitis, hemolytic anemia. ### Key Drug Interactions - **Oral Anticoagulants (e.g., Warfarin)**: May increase INR; monitor INR closely, especially at initiation/discontinuation. - **Methotrexate**: May decrease renal tubular secretion of methotrexate; increased toxicity possible. - **Probenecid**: Increases and prolongs amoxicillin blood levels; generally avoid co-administration. - **Allopurinol**: Increased incidence of rash, especially in hyperuricemic patients. ## Monitoring & Follow-up - **Before Treatment**: Assess for history of penicillin allergy. - **During Treatment**: Monitor for signs of allergic reaction, persistent diarrhea, and signs of hepatic dysfunction. - **Clinical Signs**: Watch for new skin rash, hives, difficulty breathing, yellowing of skin/eyes, or severe abdominal pain. ## Clinical Pearls - 💡 **Tip 1**: Administer at the **start of a meal** to enhance absorption of clavulanate and minimize gastrointestinal upset. - 💡 **Tip 2**: Counsel patients to **complete the full course** of therapy, even if symptoms improve, to prevent resistance. - 💡 **Tip 3**: Oral suspensions must be **refrigerated** after reconstitution and discarded after 10 days. Shake well before each use. - 💡 **Tip 4**: High-dose amoxicillin formulations (e.g., 875 mg/125 mg) are preferred over 500 mg/125 mg for high-dose amoxicillin needs as they deliver more amoxicillin with less clavulanate, potentially reducing diarrhea. > **⚠️ Important**: This information is for educational purposes only. Always consult current prescribing information, local guidelines, and clinical judgment before prescribing.