http://www.bodybuilding.com/fun/catequi.htm
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in summary
"the negative effects of boldenone are quite limited. In the normal doses of 300-400 mg a week estrogenic side-effects are almost never noted except in those who are very succeptible to estrogen. In terms of androgenic side-effects long-term use or very intense use of boldenone can cause slight virilizing effects such as acne and increased body-hair growth. Never really a problem for men, but women considering its use on account of its moderate androgenic qualities should be aware of this. "
-Big Cat




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