Testosterone can be administered parenterally , but it has more irregular prolonged absorption time and greater activity in muscle in enanthate , undecanoate , or cypionate ester form. These derivatives are hydrolyzed to release free testosterone at the site of injection; absorption rate (and thus injection schedule) varies among different esters, but medical injections are normally done anywhere between semi-weekly to once every 12 weeks. A more frequent schedule may be desirable in order to maintain a more constant level of hormone in the system.  Injectable steroids are typically administered into the muscle, not into the vein, to avoid sudden changes in the amount of the drug in the bloodstream. In addition, because estered testosterone is dissolved in oil, intravenous injection has the potential to cause a dangerous embolism (clot) in the bloodstream.
Hi Joe….. I have to be honest… I have never came across anybody who suffered any major issues from the stimulants in IKO.. but the fact is that there IS stimulants in the mix…. What the makers suggest to anybody with your sort of problems is to start off at half dose ( 2 caps a day) and over a week or so build slowly to the maximum of 4 capsules daily…. some find that they can tolerate 2 but no more, others find that 3 are ok, but 4 is just too much and many are completely fine with the max dose.. It is a bit hit and miss, but I do believe that you will find a level that suits…. If you do go ahead and try it, please come back and let me know how you get on with it… BTW don’t forget that they do offer a 90 day cash back guarantee, so if you do find that it doesn’t suit, you can get your money back…. Best Wishes and good luck – Paul