i have been on and off(mostly on) antibiotics for the last year and a half,both doxycyline and tetracyline ,they work by inhibiting protein synthesis in foreign cells, and ive gained approx 50lbs since then, it hasnt hurt my working out at all,i have never used any gear

i didnt read all of your question,antiboitics can cancel out the pill,but girls are on very low doses of ORAL steriods, someone explained this to me before i forgot exactly what he said,but it has to do with the ORAL steriods will be in the gut at the same time as the antibiotic,the chances of this happening are slim from what ive heard,also u must be on a VERY low dose for this to happen,i think he said if u just lose a tiny bit that is enough to lower the females levels to get pregent,something along those lines,but this is with very low doses from what ive heard ,also he stated that with the amount of antiboitics taken today its nothing to worry about,the girls who take birth control pills are on very low doses,hold up ill get some quotes

"The effect on the entero-hepatic cycle (the reference that I make about
antibiotics and the pill) is probably not as analogous to
weightlifting.
Girls are on low doses of steroids (estrogen/progestin combos) that
just a
slight reduction in the re-cycling of this could significantly reduce
blood
levels and cause restoration of their normal functions, thus allowing
them to
get pregnant. In most bodybuilders, they take much higher levels of
steroids
that I don't think the little affect on gut bacteria levels is going to
affect blood levels dramatically. I make this statement below, mainly
because it MAYBE possible that antibiotics can affect steroidal
efficacy, but
I don't think that it is significant."

[This message has been edited by chillin408 (edited April 18, 2001).]