Nearly one fourth of the widely used new-generation biological drugs can cause serious side effects.  

Humiraand Remicade drugs for arthiritis; cancer drugs Rituxan and Erbitux, and the heart failure drug Natrecor were included in the list of these drugs.

The study has stunned the doctors who had been recommended these drugs considering them to be safer than other medicines.

The biological drugs are made from living material. They affect the body's disease-fighting immune system. Most of these drugs suppress the disease symptoms.

According to Dr Charles Bennett a Northwestern University drug safety expert, the mechanism of working can cause side effects.

Though these drugs have many advantages over chemical drugs, But it is pertinent to take into consideration their risks as well.

Thomas Moore of the Institute for Safe Medication Practices said,."My message to patients is that these biological products often can treat very difficult to treat diseases but may have very substantial risks and that you need to take extra care to educate yourself as to what those risks might be.”