Almost anyone can report an adverse event. In the United States, the FDA accepts voluntary reports from patients, family members, caregivers, and health professionals through its MedWatch program. You do not need to be a doctor or prove that a product caused the problem. Manufacturers, importers, and certain healthcare facilities have additional legal obligations that make their reporting mandatory rather than voluntary.
Patients, Consumers, and Family Members
If you experienced a side effect or health problem after using a medical product, you can file a report yourself. The FDA provides a consumer-friendly form (FDA Form 3500B) specifically designed for patients and non-professionals, available online through MedWatch or as a downloadable PDF. A Spanish-language version is also available. The form covers a wide range of regulated products: drugs, biologics, medical devices, dietary supplements, cosmetics, food and beverages, and radiation-emitting products.
You do not need to be the person who experienced the problem. Parents, guardians, caregivers, and other family members can all submit reports on someone else’s behalf. Even consultants or attorneys can file, though the FDA asks them to identify the individual or organization they represent. The core information needed for any report is straightforward: details about the patient, what happened, which product was involved, and who is making the initial report.
Healthcare Professionals
Doctors, nurses, physician assistants, nurse practitioners, and pharmacists are all encouraged to report adverse events voluntarily through MedWatch using FDA Form 3500. Health professionals often catch reactions that patients might not connect to a specific product, making their reports especially valuable for detecting new safety signals.
For most medical products, reporting by health professionals is voluntary but strongly encouraged. The exception is vaccines, where healthcare providers face specific legal requirements. Under federal law, providers must report any adverse event listed on the VAERS Table of Reportable Events if it occurs within the specified time window after vaccination. They’re also required to report any event that a vaccine manufacturer lists as a contraindication to additional doses. Beyond those requirements, providers are strongly encouraged to report any adverse event following a U.S.-licensed vaccine, even when the connection to the vaccine is uncertain, as well as any vaccine administration errors.
Vaccine Reporting Through VAERS
The Vaccine Adverse Event Reporting System, co-managed by the CDC and FDA, has one of the broadest eligibility policies of any reporting system. Anyone can submit a VAERS report: patients, parents, guardians, caregivers, healthcare providers, vaccine manufacturers, or any other person aware of an adverse event after vaccination. The CDC explicitly encourages reporting even when you’re not sure the vaccine caused the problem.
What you’re expected to report depends on your role. Members of the general public should report any side effect or health problem after vaccination that concerns them. Healthcare providers have the mandatory requirements described above. Vaccine manufacturers must report all adverse events that come to their attention, with no threshold for severity or certainty.
Manufacturers, Importers, and Device Facilities
For companies that make, import, or use medical products, reporting is not optional. Drug manufacturers must submit a 15-day “Alert report” for any adverse drug experience that is both serious and unexpected. A serious event is defined as one that results in death, a life-threatening situation, hospitalization (or extended hospitalization), persistent disability, or a birth defect. Important medical events that could jeopardize the patient or require emergency intervention also qualify, even without hospitalization. Examples include severe allergic reactions treated at home or in the emergency room, seizures, and the development of drug dependence.
Medical device manufacturers operate under a parallel set of rules. They must report to the FDA within 30 calendar days when they learn that one of their devices may have caused or contributed to a death or serious injury. The same timeline applies to malfunctions that would likely cause death or serious injury if they happened again. For events the FDA has specifically flagged, or situations requiring immediate corrective action to protect public health, the reporting window shrinks to just five business days.
Reporting During Clinical Trials
Inside a clinical trial, the reporting chain is more structured. Trial participants typically tell the research team about any health problems they experience, though adverse reactions can also surface through lab results or routine check-ins with the investigator. The principal investigator is then responsible for reporting serious adverse events to the trial sponsor, the ethics committee that approved the study, and the relevant regulatory authority, generally within 24 hours of learning about the event. A more detailed follow-up report is typically due within 14 calendar days.
Trial sponsors carry their own obligations. They must analyze serious adverse events and submit reports to regulators and ethics committees within the required timeframes. Suspected unexpected serious adverse reactions, meaning serious events not previously identified in the product’s safety profile, trigger expedited reporting to all parties. Importantly, the investigator is responsible for ensuring the participant receives appropriate medical care without bearing any financial burden from the event.
Reporting in the European Union
The principle that anyone can report extends beyond the United States. In the European Union, both healthcare professionals and consumers can submit reports of suspected adverse reactions. These reports flow into EudraVigilance, the EU’s centralized safety database, through national regulatory authorities in each member state or through the companies that hold marketing authorizations. Patient reporting has grown significantly across Europe, with the Netherlands, the UK (before Brexit), Germany, France, and Italy generating the highest volumes of consumer-submitted reports.
How to File a Report
Your reporting path depends on the product involved. For drugs, biologics, medical devices, dietary supplements, cosmetics, and food products, use the FDA’s MedWatch Online portal or download the appropriate paper form (3500 for health professionals, 3500B for consumers and patients). For vaccines, go through VAERS at vaers.hhs.gov. Tobacco products, including e-cigarettes and vaping devices, have their own Safety Reporting Portal. Animal drugs and veterinary devices are handled separately through the FDA’s Center for Veterinary Medicine.
If you accidentally submit a report through the wrong channel, the FDA will still accept it and route it to the correct program. The most important thing is that the report gets filed. Every report, whether it comes from a patient noticing something unusual or a manufacturer fulfilling a legal requirement, feeds into the safety monitoring systems that catch problems after a product reaches the market.