What drug did Robert Mathis test positive for?

On Friday afternoon, it was announced that Indianapolis Colts outside linebacker Robert Mathis has been suspended for four games to start the regular season because of a violation of the league’s performance-enhancing drug policy.

According to Mathis, the positive test came from a fertility drug.

NFL Network insider Ian Rapoport says that the drug was Clomid, which is a bit suspicious.

Why is that a bizarre drug for a NFL player to test positive for? Here is a quick rundown of what the drug is supposed to do and who it is targeted for:

"This medication is used to treat infertility in women. It works by stimulating an increase in the amount of hormones that support the growth and release of a mature egg (ovulation). This medication is not recommended for women whose ovaries no longer make eggs properly (primary pituitary or ovarian failure).Clomiphene must be taken by mouth exactly as directed by your doctor in order to be most effective. It is important to follow your dosing schedule carefully."

Of course, the drug can also be prescribed to men who are dealing with low testosterone, so there is a real chance that he was prescribed the medication as a way to get his T-levels up as an alternative to testosterone replacement therapy, so he could produce sperm if he and his wife were attempting to have another child which appears to be what was going on because he and his wife are expecting another child this year.

Regardless, Mathis should know that fertility drugs can trigger a positive test. All you need to do is look at the Manny Ramirez incident from a few years ago.

Only Mathis knows the true story and you can read his statement in full here.