Avlomox DS Suspension 250mg/5ml – Double-Strength Amoxicillin for Children

1. About Avlomox DS (Double Strength Amoxicillin 250mg/5ml)

Avlomox DS is the double-strength amoxicillin suspension (250mg per 5ml — twice the concentration of the standard 125mg/5ml formulation), manufactured by ACI Limited, Bangladesh. The DS formulation is designed for situations where the standard 125mg/5ml suspension would require inconveniently large volumes, particularly in heavier children (typically 20–35kg), older children transitioning from suspension to capsules, or when high-dose amoxicillin therapy is required. Delivering 250mg per 5ml means the child receives twice the amoxicillin in the same volume of liquid — enabling practical dosing without excessive liquid volumes.

2. When to Use DS Instead of Standard Suspension

The clinical decision to use 250mg/5ml DS versus 125mg/5ml standard suspension depends on: (1) Child's weight: For a 25kg child on standard 25mg/kg/day dosing = 625mg/day ÷ 3 = 208mg per dose. Using 125mg/5ml: 208 ÷ 25 × 5 = 41.6ml per dose — impractically large! Using 250mg/5ml DS: 208 ÷ 50 × 5 = 20.8ml per dose — still large. For heavier children, capsules are often more practical; (2) High-dose therapy: For 40–90mg/kg/day (drug-resistant pneumococcal therapy), the DS formulation reduces volumes by half; (3) Adherence convenience: Smaller volume is better tolerated by children who find large-volume doses unpleasant; (4) Bottle volume efficiency: A fixed-size bottle (e.g., 100ml) of DS provides twice as many doses as the standard suspension. For children under 15kg, the standard 125mg/5ml suspension is usually more practical and allows finer dose adjustment.

3. Indications

• Acute otitis media (AOM) in older/heavier children where standard suspension volume is impractical
• Community-acquired pneumonia in children — high-dose amoxicillin protocol
• Streptococcal pharyngitis — 10-day course (any concentration appropriate)
• Bacterial sinusitis in children ≥6 years
• UTI in children when amoxicillin-sensitive organism confirmed
• Skin infections in older children (impetigo, mild cellulitis)

4. Dosage

Standard dose: 25mg/kg/day in 3 divided doses. Using 250mg/5ml DS suspension (50mg/ml): ml per dose = (weight × 25) ÷ 3 ÷ 50 × 5. Example: 20kg child: (20 × 25) ÷ 3 ÷ 50 × 5 = 8.3ml TDS. High-dose (40mg/kg/day): 20kg: (20 × 40) ÷ 3 ÷ 50 × 5 = 13.3ml TDS. Important: Do not substitute DS (250mg/5ml) for standard (125mg/5ml) using the same measured volume — this would double the dose. Always recalculate the volume in ml when switching between concentrations. Take with or after food. Refrigerate after reconstitution; use within 7 days.

5. Safety Considerations for the DS Formulation

The double-strength formulation carries a dose error risk if the concentration is not accounted for when calculating volume: (1) Always recalculate when switching between 125mg/5ml and 250mg/5ml; (2) Label clearly at dispensing — pharmacists should mark the bottle with the prescribed volume in ml, not the dose in mg, to prevent parental calculation errors; (3) Syringe accuracy: The oral syringe should be read at the lowest point of the liquid meniscus; small measurement errors are less significant with DS (a 0.5ml error represents 25mg instead of 12.5mg); (4) Parents should be counselled specifically that this is a different concentration from what they may have used previously. Children who have been on 125mg/5ml and transition to 250mg/5ml need specific re-education about the new volumes.

Frequently Asked Questions (FAQ)

Q1: What does DS mean in Avlomox DS, and is it stronger?

DS stands for Double Strength — the suspension contains 250mg of amoxicillin per 5ml, which is twice the concentration of the standard Avlomox suspension (125mg/5ml). The antibiotic (amoxicillin) is the same drug — DS does not mean it is a different or stronger antibiotic; it simply contains twice as much amoxicillin per 5ml of liquid. This allows giving the same total dose in half the volume, which is useful for older or heavier children where standard suspension doses would be very large. The therapeutic effect is identical — if both are dosed correctly by weight (mg/kg/day), they achieve the same blood levels and clinical outcomes.

Q2: My child weighs 22kg — should I use Avlomox 125mg/5ml or 250mg/5ml DS?

For a 22kg child on the standard 25mg/kg/day dose: 125mg/5ml: (22 × 25) ÷ 3 ÷ 25 × 5 = 36.7ml per dose (TDS) — this is a very large volume per dose, impractical. 250mg/5ml DS: (22 × 25) ÷ 3 ÷ 50 × 5 = 18.3ml per dose (TDS) — still a significant volume but more manageable. For children >20kg, consider whether the child can swallow amoxicillin capsules (250mg or 500mg) — this may be simpler and more cost-effective. Discuss with your prescriber or pharmacist. If using DS suspension, ensure your measuring syringe can accurately measure the required volume.

Q3: How long can reconstituted Avlomox DS suspension be stored?

Reconstituted Avlomox DS suspension must be refrigerated (2–8°C) and used within 7 days. After reconstitution: mark the discard date on the bottle (7 days from mixing); store upright in the refrigerator; shake well before each use (the suspension settles); bring to a comfortable temperature before giving if the child objects to cold liquid (allow to sit for a few minutes at room temperature immediately before dosing, but no longer). Do not freeze — freezing damages the suspension formulation. After 7 days, discard all remaining suspension even if antibiotic remains in the bottle — amoxicillin and the suspension base degrade, and potency cannot be guaranteed. The dry powder (before reconstitution) can be stored at room temperature below 25°C until the expiry date on the box.

Q4: Is Avlomox DS suitable for adults?

Avlomox DS 250mg/5ml suspension can technically be used by adults, but capsules are the practical form for adults. An adult needing 500mg TDS would require 10ml per dose of DS suspension — this is a large liquid dose compared to a single capsule. DS suspension is occasionally used for adults who: (1) Cannot swallow capsules due to dysphagia (swallowing difficulties) — e.g., post-surgical or neurological patients; (2) Require a liquid formulation for nasogastric tube administration; (3) Are unable to obtain capsules. For most adults, Avlomox 500mg capsules are more convenient, cost-effective, and equally effective. If using DS suspension in adults, calculate dose as 500mg (= 10ml DS) TDS or as directed by the prescribing clinician.