The method of the interrupted sexual certificate or act for prevention nezh is how much effective...

[Olja]

The method of the interrupted sexual certificate or act for prevention of undesirable pregnancy is how much effective? Whether there are more effective alternatives - not hormonal agents and not Naval Forces. Thanks.

[Oshchepkova S.R.]

It is ineffective. Following by efficiency - thermal (calendar). And you can accept a combination a condom + spermitsidy (PANTEKS - the OVAL, FARMATEKS).