There’s a chance that giving children medicine to reduce fevers could do more harm than good. Various types of Tylenol (Stock Quote: JNJ) for kids and infants are being recalled after raw ingredients used to make the drug were found to contain B. cepacia bacteria.

Tylenol wrote in a note to health professionals that the raw material containing the bacteria was isolated and has not been found in any of the finished product. 

The recalled lots of the drug, which are being pulled as a precaution, were manufactured between April 2008 and June 2008. The recall includes Tylenol produced using raw ingredients that were manufactured at the same time as the contaminated batch of ingredients.

The affected Tylenol batches include Children’s Tylenol Suspension, Children’s Tylenol Plus Cold /Allergy and Infant Tylenol Drops, Infant Tylenol Suspension, Children’s Tylenol Plus Cough and Runny Nose and several other children and infant Tylenol products.

B. cepacia bacteria can be found in water or soil, and is often resistant to common antibiotics, according to the Centers for Disease Control. Symptoms, which can vary, may include respiratory infections, and can be especially severe in people with underlying pulmonary disease, cystic fibrosis or compromised immune systems, the CDC says.