LQD Spray is a CE‑marked class III medical device.
There is a Medicines and Healthcare products Regulatory Agency urgent field safety notice for LQD Spray. This details a single case report when accidental inhalation of LQD Spray may have caused a severe allergic reaction in a person with a known allergy to shellfish. A safety warning has been issued that inhalation or ingestion of the spray should always be avoided. Special caution is recommended in any user with a history or suspicion of shellfish allergy, including those applying, or in the immediate vicinity of, the treatment being applied. So far, this is the only case report of an allergic reaction in connection with LQD Spray that the manufacturer is aware of.