About two weeks ago I consumed Ginkgo Biloba 60mg x 6 (360mg) for two consecutive days.
On the second day I had a terrible headache (and night blindness), the same that caffeine causes.
I consumed 1g glutamine thinking it might work for the headache, and it worked for 30 or so minutes until the headache returned as before, and further glutamine consumption did nothing. Then I consumed 500mg nicotinic acid (vitamin B3) since it is a blood thinner, thinking it might help more blood pass through the obviously narrowed veins.
The nicotinic acid worked but only for about 10 minutes, and it didn't work the few hours later that I tried the same dosage.
I then tried agmatine, somewhere around 1g. That seemed to help but only for a few minutes.
The headache lasted for almost a week, while the night blindness still has not faded even after about two weeks.
I have tried taking taurine 1.5g yesterday and today, as well as lots of vitamin A. Neither of these have worked.
Night blindness means that I cannot at all, whatsoever, see in the dark. My vision in lighted areas seems more or less fine, with a tiny "darkening" of my vision.
Any suggestions what might have caused the night blindness? I know with absolutely certainty that it was the Ginkgo Biloba, but I am not certain about the mechanism of action of it in regards to this issue. Could it have been a brain bleeding or something?