Health experts are opining that stringency in the use of certain drugs has resulted into enhanced spread of AIDS, recommending the regulators to consider an amendment in the policies.

Julio Montaner, President of the International AIDS Society, said that the over strictness in the use of drugs leads to difficulties in treating the patients as well as preventing the spread of HIV.

"Yet there is no evidence they have reduced rates of drug use or drug supply", he added.

Montaner, in collaboration with other AIDS experts like Francoise Barre-Sinoussi, who is the co-discoverer of the HIV virus, released a Vienna Declaration on Monday, urging to put an end on the sterile policies and base the changed policies on scientific justifications and findings.

The experts told that in majority of the places like Eastern Europe and central Asia, the injectable drugs prove to be the greatest source of virus transmission.

They further said that programs, including use of safer needles and syringes, coupled with opioid substitution therapy, undertakes the replacement of illicit drugs by less injurious substances.

As many as 20,000 experts and AIDS researchers will be present at the biennial conference to be held from July 18 to 23.