What is Humulin R U-100?
Humulin R U-100 is a brand name for regular human insulin at a concentration of 100 units per milliliter (U-100). It’s used to lower blood sugar in people with diabetes.
What does “R” and “U-100” mean?
“R” indicates regular (short-acting) insulin. “U-100” means each mL contains 100 units of insulin, which matters for dosing and for ensuring you use the correct syringe/pen.
How is Humulin R U-100 usually taken?
It’s typically given by injection under the skin (subcutaneous). The timing matters because regular insulin works over several hours, not like rapid-acting insulins. Exact instructions depend on your prescription.
How long does Humulin R U-100 last?
Regular human insulin has a longer activity window than fast-acting insulin. Onset and duration depend on dose, injection site, and individual metabolism.
Who might use Humulin R U-100?
People with diabetes who need insulin, including those who use it with meals or as part of a larger insulin plan. Your clinician determines whether it fits your regimen.
What side effects should patients watch for?
The main risk is low blood sugar (hypoglycemia). Common side effects can also include injection-site reactions. Seek urgent help for severe hypoglycemia (confusion, passing out, seizures).
Safety: how to avoid dosing mistakes with U-100 insulin
Because “U-100” refers to concentration, mixing up insulin strength (for example, using the wrong syringe or an insulin labeled at a different concentration) can cause serious dosing errors. Only use the device and concentration your prescription specifies.
Can you clarify what you mean by “Humulin r u 100”?
If you tell me what you’re trying to do—like confirm the type of insulin, check whether it’s the same as another brand, or understand how to dose it—I can tailor the answer. If you share the exact label (photo text or wording), I can help interpret it.