With the Pereiro salbutamol controversy Pereiro could be excluded from this year's TdF I had to laugh. As in my case, salbutamol is not necessarily performance enhancing, due to a possible side effect: I have mild cold-induced asthma that is mainly a problem in early spring and late fall, or damp, cool, foggy days. Even though I'm a medical specialist and my wife is specifically lung specialist (sleep apnea), I hate seeing doctors or taking meds if I can avoid it. Yet, when I do pretreat myself before I ride to avoid bronchospasm with either salbutamol (Ventolin) or combined inhaled steroid/beta-agonist (budesonide/formoterol) I seem to repeatedly get muscle cramps in my legs towards the end of my ride. If I avoid these beta-agonists, I don't usually get these cramps -- so I'm fairly certain it is due to these drugs. I know cramps are listed as a side-effect and may relate to potassium shift, but I wonder if this is a common problem in asthmatics who use beta-agonists. If so, which bronchodilators have people found useful for cycling.