A product can be defective not because of how it was designed or built, but because of what the company failed to tell you. This is the third kind of product defect Florida recognizes, sometimes called a failure to warn or a marketing defect. The idea is straightforward and important: some products carry dangers that are not obvious, and a reasonable manufacturer has a duty to warn users about those dangers and to give the instructions needed to use the product safely. When a company sells a product with a hidden risk and does not adequately warn about it, and someone is hurt as a result, the missing warning can be the basis of a claim even though the product itself was otherwise sound.
What makes a warning adequate
What makes a warning adequate
The mere presence of a warning does not settle the question. A warning has to be adequate, which means it must be clear enough, prominent enough, and strong enough to alert a reasonable user to the danger and to convey how serious it is. A warning buried in fine print, written in language a user is unlikely to read or understand, or one that mentions a risk while understating how grave it is, can be inadequate even though the product carried some warning. The law asks whether the warning was of a form and intensity that would cause a reasonable person to take the precautions the danger called for. A warning that does not do that job has not really warned at all.
The duty to warn, and its limits
The duty to warn extends to dangers that are not obvious and to risks that arise from uses the manufacturer could reasonably foresee, which can include certain foreseeable misuses of the product. A company cannot ignore the predictable ways people in fact use its product and warn only for the ideal case. That said, the duty has limits. A manufacturer generally does not have to warn about a danger that is truly open and obvious to an ordinary user, because a warning about the obvious adds nothing. The interesting and contested cases usually live in between, where a company argues a danger was obvious and the injured person shows it was not, or that the product was used in a way the company should have anticipated and warned about.
Prescription drugs and the learned intermediary
Warnings for prescription drugs and many medical devices work differently, and it is worth understanding why. Under what is called the learned intermediary doctrine, the manufacturer’s duty to warn generally runs to the prescribing physician rather than directly to the patient. The reasoning is that the physician is positioned to weigh the risks and benefits for a particular patient and to pass along the warnings that matter. This does not eliminate the duty to warn. It changes who must be warned, and a manufacturer that fails to give physicians adequate warnings about a drug or device can still be responsible. These cases carry their own rules, which is why prescription drug and device claims are handled with those rules in mind.
Causation: would a warning have made a difference
A failure-to-warn case has its own causation question, and it is often where these cases are fought. It is not enough to show that a warning was missing or inadequate. The injured person generally has to show that an adequate warning would have made a difference, that you or a reasonable user, properly warned, would have acted differently and avoided the harm. The defense will argue that the outcome would have been the same regardless, that the warning would have been ignored, or that the person already knew the risk. Answering that argument, with the facts of how the product was used and what a reasonable person would have done with a proper warning, is central to the case.
Warnings and instructions are not the same thing
It helps to distinguish two related duties that both fall under this kind of claim. A warning tells a user about a danger, so they can decide whether and how to use the product. Instructions tell a user how to use the product safely. A product can be defective because it lacked an adequate warning, because it lacked adequate instructions, or both. A cleaning product that does not warn about a dangerous reaction with another common product, and a tool that does not instruct the user on the safe way to operate it, can each be the basis of a claim. In evaluating a case, part of the work is identifying which duty was breached, because the missing warning and the missing instruction can point to different failures by the manufacturer and different ways the harm could have been prevented.
How these cases are proven
A failure-to-warn case is built on the product, its labeling and instructions, the manufacturer’s own knowledge of the danger, and expert testimony about what a reasonable warning would have said and where it should have appeared. Often the most powerful evidence is the manufacturer’s own records, showing that it knew about a risk and chose not to warn, or warned in a way it knew was inadequate. Obtaining and analyzing those records, and pairing them with qualified experts on warnings and on the specific danger, is how these cases are developed.
Why these cases take a team, and why my background fits
Failure-to-warn cases turn on documents, technical knowledge of the product and its dangers, and the cross-examination of the manufacturer’s experts, the kind of detail-heavy work I have built my career on. I represent injured people, not manufacturers or insurers, and because these cases take real resources to develop against a well-funded company, I take them on together with experienced co-counsel who focus on this work, pairing my trial and cross-examination experience with their depth. I handle your case personally, and I am prepared to put it in front of a jury when that is what fair value requires. Learn more about my background.
Common Questions
What is a failure-to-warn claim?
It is a claim that a product was unreasonably dangerous because it lacked adequate warnings or instructions about a danger that is not obvious. Even a well-designed, well-made product can be dangerous if the company did not warn users about a risk they needed to know about to use it safely.
Does a warning have to be on the product?
The warning has to be adequate to alert a reasonable user to the danger, which usually means it must be clear, prominent, and strong enough to convey the seriousness of the risk. A warning buried in fine print, or one that understates a serious danger, can be inadequate even though some warning existed.
What if the danger was obvious?
A manufacturer generally does not have to warn about a danger that is truly open and obvious to an ordinary user. The claim focuses on dangers that are not obvious, and on risks that arise from foreseeable uses, including some foreseeable misuses, that a reasonable manufacturer should have warned about.
Do warnings for prescription drugs work differently?
Often yes. For prescription drugs and many medical devices, the duty to warn generally runs to the prescribing physician rather than directly to the patient, under what is called the learned intermediary doctrine. The physician is treated as the one positioned to weigh the risks for the patient.
What do I have to prove in a failure-to-warn case?
Generally, that the product had a danger requiring a warning, that the warning given was absent or inadequate, and that an adequate warning would have prevented the injury, because you or a reasonable user would have acted differently had the risk been properly disclosed.
This page is general information about Florida product liability law, not legal advice, and it does not create an attorney-client relationship. The governing authorities include Florida’s strict product liability doctrine, adopted in West v. Caterpillar Tractor Co., 336 So. 2d 80 (Fla. 1976), and reaffirmed in Aubin v. Union Carbide Corp., 177 So. 3d 489 (Fla. 2015), the comparative fault statute in section 768.81, the two-year limitations period in section 95.11(5)(a), and the twelve-year statute of repose in section 95.031. Every case is different, and past results do not guarantee a similar outcome. The hiring of a lawyer is an important decision that should not be based solely on advertisements.

