2ci is based on idodine...
phikal
"
Where else can one go, from 2C-I? The iodine is the fourth, and the last of the so-called halogens, at the bottom of the classical periodic table. But, thanks to the miracles that have accompanied us into the nuclear age, there is a fifth halide now known, Astatine. All of its isotopes are radioactive, however, and it seems unlikely that there will ever be an entry (other than this one) for 2,5-dimethoxy-4-astatophenethylamine. What might be speculated as to its activity? Probably similar in potency to 2C-I, requiring maybe 10 or 20 milligrams. The duration would be dicey to measure, since the isotope with the longest known half-life is half decayed in about 8 hours, and the longest lived natural isotope (for those who insist on natural rather than man-made things) is half decayed in less than a minute. Two predictions would be pretty solid. You might have quite a job accumulating your 10 milligrams of Astatine, as the most that has so far been made at one time is only about 0.05 micrograms, approximately a millionth of the amount needed. And the second prediction? You would not survive the screaming radiation that would bombard you if you could get the needed 5 or 10 milligrams of radio-astatine onto that magic 4-position, and the resulting 2C-A into your tummy!"
so... idodine is a really large chemical. and it is relatively hard to pass through the kidneys. the lower back pain you had was your kidneys bra... they filter every chemical you ingest, out of your body.
the larger the chemical the harder the kidney has to work to pass it through you... in other words, you really stressed your kidneys really hard.
now the goal is to be really nice to your kidneys. find out what they like and what they need to be healthy. the pain you had will happen to people who have slightly weaker kidneys then most folks. so now you know you have weak kidneys. it maybe helpful to find out why and do some things to make them healtheir.
you could look at the 2ci as introducing you to your weak kidneys.
drink lots of cranberry juice and do some research on supplements that you can take that will fortify them.
cheers.