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Prescription-only medicine. This page is educational information only. Do not use without a licensed prescriber.
IndexedBuilt automatically from public databases on 2026-09-30. Not yet hand-reviewed by PLOBT.How this works →

Insulin isophane

FDA approved · Rx

Intermediate-acting insulin

Also known as: NPH insulin, Caninsulin, Monotard, Insulin lente, Insulin semilente, Novolin U, Insulin lente MC, Insulin NPH

Evidence score
92/ 100
Strong evidence

Strong, human-grade evidence

  • Regulatory standing. FDA-approved prescription medicine
  • Human trials. Backed by controlled human studies
  • Registered human trials. 185 registered studies on ClinicalTrials.gov, most advanced Phase 4
  • 1 cited source. Includes primary / regulatory sources

Computed with the same four public criteria as every profile. The human-evidence grade on an indexed profile is set automatically and may change when it is hand-reviewed. It is not a safety score, not a purity rating, and not medical advice, and not a claim that this compound treats, cures, or prevents any condition.

What it is

Insulin isophane, commonly called NPH insulin, is human insulin combined with the protein protamine and zinc, which slows its absorption after injection under the skin. Like the body's own insulin, it acts on insulin receptors to help cells take up glucose and to reduce glucose production by the liver, with an intermediate duration of action.

What the evidence shows

Automatic summaryHuman trials

NPH insulin is a long-established prescription insulin approved for improving blood sugar control in people with diabetes, supported by a large body of human research including 185 registered trials reaching Phase 4. The supplied database record did not confirm a specific FDA approval listing or brand name, but its prescription status and clinical use are well documented.

Key facts

Molecular formula
C257H383N65O77S6Zn
Molecular weight
5873 g/mol

Registered human trials

Published literature

Sources

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