Standard Dosage Range
Research dosing range: Highly individualized based on blood glucose monitoring and carbohydrate intake.
Educational reference only
Dosage by Use Case
Type 1 Diabetes
Lifelong.
Requires basal and bolus insulin. Basal insulin provides background coverage, while bolus insulin covers meals. Rapid-acting analogs are often used for bolus injections, and long-acting analogs for basal coverage.
Type 2 Diabetes
Variable, may be temporary or long-term.
Often used in combination with oral antidiabetic medications. Dosage is adjusted based on blood glucose levels and response to therapy.
Gestational Diabetes
During pregnancy.
Dosage is carefully adjusted to maintain optimal blood glucose control and minimize risks to the mother and fetus.
Hyperkalemia (Emergency Treatment)
Single treatment.
Insulin drives potassium into cells, lowering serum potassium levels. Glucose is administered to prevent hypoglycemia.
Diabetic Ketoacidosis (DKA)
Until resolution of DKA.
Requires close monitoring of blood glucose, electrolytes, and acid-base balance.
Timing & Frequency
Rapid-acting insulin analogs are injected 15 minutes before meals. Short-acting (regular) insulin is injected 30-60 minutes before meals. Intermediate-acting insulin (NPH) is typically injected once or twice daily. Long-acting insulin analogs are injected once daily at the same time each day. Ultra-long-acting insulin analogs are injected once daily.
Cycle Guidance
Insulin is generally used continuously for individuals with type 1 diabetes and may be used intermittently or continuously for individuals with type 2 or gestational diabetes, based on individual needs and medical advice. There is no cycling guidance for insulin because it replaces an essential hormone in type 1 diabetes or supplements insufficient hormone in type 2 diabetes.
Reconstitution Reference
Quick reference for reconstituting Insulin. For custom vial sizes and concentrations, use the Reconstitution Calculator.
| Common Vial Size | Typically 10 mL vials at 100 units/mL (U-100). Other concentrations (e.g., U-500) are available. |
| BAC Water Volume | Not applicable; insulin is supplied in a ready-to-use solution. |
| Concentration & Draw | 100 units/mL (U-100) is standard. U-500 is 500 units/mL. |
| Storage | Refrigerate at 2–8°C (36–46°F). Do not freeze. Opened vials can be stored at room temperature (below 30°C or 86°F) for a limited time (typically 28 days) depending on the specific product. |
| Stability | Unopened vials are stable until the expiration date when refrigerated. Opened vials have limited stability at room temperature (typically 28 days). |
Frequently Asked Questions
What is the difference between rapid-acting and long-acting insulin?
How is insulin dosage adjusted?
What are the common side effects of insulin?
Last updated: 2026-02-19