Health experts are warning that many people who have allergies to the allergens kinney drugs are at risk of developing an allergy to the drug kacy, a drug that has become increasingly popular among younger people.
The Food and Drug Administration has been urging the public to check kacy for allergy symptoms.
The FDA has issued two warnings in recent weeks over the drug, which has been promoted by the drugmaker Bayer for a number of years as a potentially effective treatment for allergies.
The FDA has said the drug is safe for people who are not allergic to it and is not known to cause allergic reactions.
The first warning came on March 18, when it warned of a new drug, a new formulation of kinney drug called kacyx.
The drug, approved by the FDA last year, had not been tested for allergies when it was approved.
Kacyx is also being marketed by Pfizer, which said the new drug was the only one to pass a test and meet safety guidelines.
The other warning came March 21, when the FDA warned of an allergy case in a woman who had been taking the drug for two weeks.
The agency said the woman developed severe allergic reactions to a variety of foods, including milk, eggs and cheese.
It urged people to stop taking kacy.
Konyx has been on the FDA’s most recent list of approved drug ingredients, but the agency said it does not have data to show whether people who use the drug have any risk of serious adverse reactions.
If people do have an allergy, they can take the drug as directed by a health care provider, or use a mask.
The most common symptoms are runny nose and skin reactions, or wheezing and shortness of breath.
People who are allergic to kinney can be reassured that the drug does not cause any serious allergic reactions, the FDA said.
Kadyx is the only drug in the U.S. approved for use as a treatment for asthma.
The company has been making a major push to expand sales and reach more people.