found this article:
"Anxiety is felt to be related to GABA-ergic transmission in the brain. For some time, it has been known that some steroids, particularly boldenone (eq) and stanazolol (winny), affect GABA receptors in the brain. GABA is considered predominantly inhibitory, i.e. a "chiller". EQ can strip the brain of its natural chillers, GABA, creating waves of panic as you experience and describe so eloquently. Some people are born without sufficient GABA-ergic transmission, predisposing them to panic attacks such as you experienced, but in the absence of any externally administered drug. If you external stress overrides your GABA-ergic transmission, you will panic. So some only develop panic after a traumatic event. You probably had sufficient GABA-ergic transmssion for everyday life, but you were closer to that critical line than you thought, so when EQ stripped your GABA, you were pushed over that edge into panic. Some people are very far from that edge, so they can take a gram or two of EQ, strip their receptors, and still have no problems. Treatment options include benzos (which directly enhance GABA-ergic transmission, but have terrible tolerance and addiction potential and are NOT recommended), antidepressants (which by influencing serotonin and norepinephrine can enhance GABA-ergic transmission or simply screen more external stress through their mechanisms), and lastly DON"T DO EQ. This last one is simplest and best of course."