You don't have to read every link to ask a useful question. Pick the source that matches what you're trying to understand. For a proposed procedure, ask the clinician to walk through the patient information for that exact medicine or filler with you.
Movement, labeling and authenticity
- FDA cosmetic onabotulinumtoxinA prescribing information, October 2024. OnabotulinumtoxinA is the medical name of one toxin medicine. Its label lists adult expression-line and neck-band uses, unwanted effects and the warning about effects spreading beyond the treated area.
- CDC guidance on botulinum toxin safety. Explains how toxins work, checks for the person and product, and symptoms that need emergency help. Symptoms may begin hours to weeks after an injection.
- FDA's 2024 counterfeit-toxin alert. Describes harmful reactions involving counterfeit medicine, including incidents involving licensed people. It helps explain why checking a license doesn't settle the product question.
- FDA's November 2025 illegal-marketing warning. Covers unapproved and misbranded toxins, prescription requirements and the serious warning carried by approved medicines.
- CDC's 2024 investigation. Covers counterfeit or mishandled toxin and failures to meet local requirements. CDC closed this investigation in December 2024; it isn't an active outbreak alert.
Fullness, specific uses and serious risks
- FDA's consumer explanation of dermal fillers. Covers approved uses, prescription status, common reactions and serious harms. It also gives questions to discuss with a licensed provider.
- FDA's soft-tissue filler safety information. Explains urgent symptoms, the need for a blood-vessel complication plan and why removing filler can be difficult or impossible.
- FDA's approved-filler information. Explains hyaluronic acid, or HA, and links to the labeling for particular fillers. A material's name doesn't tell you every approved use.
- FDA's HA lip and upper-lip-line approval example. Describes one filler's approval for adding lip fullness and correcting lines above the upper lip. It isn't a blanket approval for HA gels.
- FDA's HA cheek and midface approval overview. Describes one gel's approval for cheek fullness and midface shape or volume differences. A cheek approval doesn't establish a lip use.
Professional roles and reports
- California medical-board guidance. Questions about practitioner qualifications, supervision and complications. Check with the regulator where the procedure would happen about the rules for that person's role.
- State medical-board directory. Find medical and osteopathic boards here. Other professions have their own regulators.
- FDA MedWatch. A route for safety information and reporting product problems. Reporting doesn't arrange medical care.
- MedlinePlus on stroke and MedlinePlus on breathing difficulty. Explain symptoms and when to call 911. Use emergency services when needed; don't wait to finish the reading.