The link you posted doesn't work at all, but if there is anyone promising 100% effective ivf, they are probably a scam.

Ivf -- in vitro fertilisation -- involves taking eggs from the woman, and fertilising it in a dish with sperm from the man. In order to get the eggs, the woman has to take heavy hormones, to produce enough to harvest. If she is infertile because she is no longer producing eggs, then she needs to use donor eggs. Similarly, if the man is infertile because he doesn't produce any sperm, you need to use donor sperm.

The fertilised eggs are then implanted inside the uterus.

I think ivf is generally considered quite safe, although some women get quite ill from the hormones. However, it isn't particularly reliable -- and the older you are, the less likely the pregnancy is to "take".