You are the one that said Coria got caught for ephedrine. I pointed out it was Nandrolone.
Personally, if I was allowed a 1 performance enhancing drug, side effect free, for tennis, I'd choose Ephedrine over steroids any day. Ephedrine has direct game day enhancing benefits, so directly relevant to tennis demands. Having said that, I've used ephedrine(although never in the dosage that tends to recommended) and know first hand the benefits, I have never used steroids despite being in an environment surrounded by them for years.