 <unk> @-@ 9 was once believed to offer additional protection against STDs ( including HIV ) but recent studies have shown that , with frequent use , nonoxynol @-@ 9 may increase the risk of HIV transmission . The World Health Organization says that <unk> lubricated condoms should no longer be promoted . However , it recommends using a nonoxynol @-@ 9 lubricated condom over no condom at all . As of 2005 , nine condom manufacturers have stopped manufacturing condoms with nonoxynol @-@ 9 and Planned <unk> has discontinued the distribution of condoms so lubricated . 
