Gramicidin Dosing Calculator
Vial size, bacteriostatic water, and dose — converted to insulin-syringe units, pre-loaded with Gramicidin's documented doses.
Typical dose: 0.025 mg · every 4 hours (up to 2 drops every hour for severe infection)
Gramicidin documented dose levels
| Phase | Dose | Frequency |
|---|---|---|
| Days 7-10 | Gramicidin 0.025 mg/mL (in neomycin/polymyxin B/gramicidin ophthalmic solution); instill 1-2 drops | Every 4 hours (up to 2 drops every hour for severe infection) |
Reconstitution quick reference
A 5 mg vial at a 25 mcg dose of Gramicidin, by how much bacteriostatic water you add:
| Bacteriostatic water | Concentration | U-100 syringe units per dose |
|---|---|---|
| 1 mL | 5 mg/mL | 0.5 units |
| 2 mL | 2.5 mg/mL | 1.0 units |
| 3 mL | 1.667 mg/mL | 1.5 units |
Different vial size or dose? The calculator above handles any combination.
Gramicidin dosing questions
What is a typical Gramicidin dose?
0.025 mg · every 4 hours (up to 2 drops every hour for severe infection)
How many insulin-syringe units is a Gramicidin dose?
With a 5 mg vial reconstituted with 2 mL of bacteriostatic water, a 25 mcg dose measures 1.0 units on a U-100 insulin syringe. The calculator above recomputes this for your own vial size, water volume, and dose.
How often is Gramicidin taken?
Every 4 hours (up to 2 drops every hour for severe infection)
Educational information only — not medical advice. Always consult a qualified healthcare provider.