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Dextrose 2.5% and sodium chloride 0.33% in plastic container?

See the DrugPatentWatch profile for Dextrose

What you’ve got

You’re describing a mixed intravenous (IV) fluid that contains:

  • 2.5 % dextrose (i.e., 25 g of glucose per 1 L of solution, or 0.25 g/mL)
  • 0.33 % sodium chloride (≈ 3.3 g of NaCl per 1 L, which is roughly one‑third the concentration of “normal” 0.9 % saline)

This solution is sometimes called “Dextrose 2.5 % in 0.33 % NaCl” or “0.3 % NaCl + 2.5 % dextrose.” It’s an isotonic to slightly hypotonic fluid that supplies both electrolytes and calories in a balanced way.

Typical Uses

Clinical Scenario Why this mix?
Maintenance IV therapy (e.g., for children or patients with low fluid needs) Provides a moderate sodium load with calories from dextrose, helping avoid both hyponatremia and hypoglycemia.
Fluid resuscitation when a gentler electrolyte profile is desired 0.33 % NaCl is lower in sodium than 0.9 % saline, so it’s gentler on the kidneys and less likely to cause fluid overload.
Post‑operative or critical‑care patients who need a low‑salt, low‑fluid volume but still need energy Dextrose supplies calories, while the low NaCl limits the sodium and chloride load.
Patients with salt‑sensitive hypertension or renal disease The lower sodium concentration reduces the risk of sodium‑induced edema or hypertension.

Composition in a Nutshell

Component Amount per liter What it does
Sodium chloride 0.33 % 3.3 g Provides Na⁺ and Cl⁻; gives the fluid about 200–250 mOsm/L of sodium chloride, roughly 1/3 the sodium of normal saline.
Dextrose 2.5 % 25 g A carbohydrate source; after IV administration it raises blood glucose temporarily (peak ~30–60 min) and is then metabolized to give energy (≈ 90 kcal per 1 L).
Water 975 mL The solvent, usually sterile, distilled, or filtered.
Total osmolarity ~200 mOsm/L Roughly isotonic (normal plasma osmolarity ~285 mOsm/L).

Storage & Compatibility

  1. Container

    • Most commercial IV bags are made of polyethylene (PE) or polypropylene (PP), which are compatible with this solution.
    • Avoid high‑density polyethylene (HDPE) or polycarbonate if you’re concerned about plasticizer migration, especially at higher temperatures.

  2. Temperature

    • Store at 2–8 °C (refrigerated).
    • Do not freeze (freezing can compromise the bag’s integrity and alter the solution’s osmolarity).

  3. Light

    • Protect from direct sunlight or bright fluorescent light; use a UV‑blocking bag if available.

  4. Shelf life

    • Usually 7–14 days when kept refrigerated and sealed.
    • After opening, use within 24 h or follow your institution’s policy.

  5. Mixing with other drugs

    • Check drug‑fluid compatibility tables.
    • Commonly compatible with many antibiotics, electrolytes, and vitamins, but be careful with drugs that precipitate in dextrose or with high NaCl concentrations.

Dosing & Administration

  • Maintenance fluid formula (for adults, roughly 30 mL/kg/day) often uses this solution or its 0.9 % counterpart.
  • For children: the typical maintenance fluid calculation is 4 mL/kg for the first 10 kg + 2 mL/kg for the next 10 kg + 1 mL/kg for each kg above 20 kg.
  • Infusion rates are usually 1–2 mL/kg/h for adults and adjusted for children’s size and needs.
  • Monitor blood glucose in patients with diabetes or those who are insulin‑dependent, as the dextrose can transiently raise serum glucose.

Why 0.33 % NaCl Instead of 0.9 %?

Reason Explanation
Lower sodium load Helps prevent hypernatremia and fluid overload in patients with limited cardiac or renal reserve.
Less chloride Chloride‑rich fluids (like normal saline) can sometimes worsen metabolic acidosis; a lower chloride content is gentler.
Isotonic/near isotonic 0.33 % NaCl plus 2.5 % dextrose results in an overall osmolarity close to plasma, reducing the risk of osmotic shifts.

Common Names & Brand Variants

  • Dextrose 2.5 % in 0.33 % NaCl (generic)
  • Some manufacturers may label it “Low‑NaCl Dextrose” or “0.3 % NaCl + Dextrose”.
  • In the U.S., it’s not as common as the 0.9 %/5 % mixture (D5W) but can be found in hospitals that prefer low‑salt maintenance fluids.

Bottom Line

Your plastic container is holding an IV solution that balances electrolytes and calories while keeping sodium and chloride levels relatively low. It’s handy for maintenance therapy, gentler resuscitation, or situations where you want to avoid the higher sodium load of normal saline. Just keep it refrigerated, use a compatible plastic bag, and monitor glucose and electrolytes as you would with any IV fluid. If you’re planning to mix it with other meds or need specific infusion rates, double‑check the drug‑fluid compatibility tables and institutional protocols.



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