Ethinyl estradiol / norgestimate
"I was hospitalized within the first 3 weeks of taking Tricyclen as I had a severe side effect. It created excess spinal fluid in my body causing pressure on my brain. This required two lumbar punctures to help drain my spinal fluid following by a week of being bedridden. 

Please please please talk to your doctor before taking this. I have never had a problem like this with BC before until I got put on Tricyclen and threw the rest of them out."