I just did a google search for this stuff. Several RX sites sell the stuff for $8+ per dose, but the site you linked offers to  refer you to 3 other providers who will sell for less than $2 per dose. All you have to do is pay $10, up front, for each referral. Thats weird alone.

Then there is the fact that the site "advises" you to use this stuff in connection with viagra and some other herb. If you follow the links around you find where it says that "cabergoline taken without viagra will seem to have a detrimental effect". Ummm...WHAT??

And finally, there is the fact that every single website has a link to the exact same bbc article from almost two years ago. I am thinking if this was the real deal there would be a lot broader base of information about it.

This thing just stinks bad.

Cabergoline (ca-BERG-go-lene) is a drug used to treat benign tumours or cancers which cause the body to produce too much of a hormone called prolactin. Cabergoline helps decrease your body's production of prolactin
Nausea is common while taking cabergoline but is usually mild. Loss of appetite and some stomach discomfort may also occur.
Headache may occur.
Constipation may occur.
Tiredness and lack of energy may occur.

Try working out twice a week and losing some weight if you want to have better sex. Use Viagra only if you can't keep an erection and use the smallest possible dose.