Contraindication

The contraindication meaning is a specific reason a drug should not be used in a particular person because the risk outweighs any possible benefit. A contraindication is about who the drug is unsafe for, not whether the drug works in everyone else; “contraindicated” is a stop sign, not shorthand for “be careful.”

What is a contraindication?

A contraindication is a condition, trait, allergy, or drug combination that makes a treatment inappropriate for one person. FDA labeling guidance reserves the Contraindications section for known hazards where the risk clearly outweighs any possible therapeutic benefit, not merely a theoretical problem. That is the practical contraindication meaning to carry into any drug profile.

Contraindications can come from the person’s medical history, another medicine, pregnancy, age, or a previous serious reaction. The key question is not “Does this drug work?” It is “Does this particular fact about this person make using the drug an unacceptable risk?” Side effects answer a different question: what unwanted effects can happen after someone takes a drug.

What is the absolute vs relative contraindication difference?

The absolute vs relative contraindication distinction separates a hard stop from a risk that may sometimes be managed. An absolute contraindication means the treatment should not be used in that situation. A relative contraindication means the risk is higher, but a clinician may decide the expected benefit outweighs it, often with closer monitoring or another adjustment. The National Library of Medicine describes the same split.

U.S. prescription labels use “contraindicated” for the hard-stop category. “Use with caution” is not a softer synonym. It signals a warning or precaution where the risk may call for monitoring, a dose change, or a different choice. Our guide to peptide side effects explains how warnings, adverse effects, and person-specific risks fit together.

What does contraindicated mean for semaglutide?

The plain-English contraindicated meaning is “do not use this drug in the listed person or situation.” For semaglutide, the current Wegovy label lists a personal or family history of medullary thyroid cancer or MEN 2. It also lists a prior serious hypersensitivity reaction to semaglutide or its ingredients.

That first example matters across the GLP-1 peptide hub: the thyroid-history rule says who should not receive semaglutide. It does not weaken the human trial evidence that semaglutide works for its approved uses. Contraindication and effectiveness belong in separate columns, even when a drug label puts both on the same page.