According to John Schlegel, a beat writer for MLB.com, it looks like the drug A-Rod fessed up to taking isn't exactly legal in the Dominican Republic;

Primobolan, understood to be the substance Alex Rodriguez referred to as "boli" and reported by Sports Illustrated to be what triggered his positive drug test in 2003, is not and was not legal in the Dominican Republic, that country's top drug regulatory official told ESPNdeportes.com.

Dr. Pia Veras, who oversees the agency that monitors pharmaceuticals legally sold in the Dominican Republic, refuted the account Rodriguez told during his Tuesday press conference of his cousin getting "boli" legally over the counter in the Dominican Republic.

"What Alex Rodriguez stated at the press conference doesn't make sense," Veras told ESPNdeportes. "It is important for us to clarify that such substance has not been registered and is not currently registered for legal sale in Dominican pharmacies -- not now and the same applies for the years 2001 to 2003.