All the symptoms being described are indicative of ischaemic muscle pain that's caused by not enough oxygen, ie blood reaching the muscle tissues. This is not due to vasoconstriction as ischaemia causes release of compounds the produce local vasodilation. It's being caused by partial blockages of veins that are restricting the blood flow and those blockages are going to be due to particulate matte from the pills being used.
As this gets worse, which it will as the particulate matter will build up just like logs causing a blockage of a river, tissue necrosis will start to occur due to prolonged lack of oxygen. This will result in one of two things, either gangrene if a total blockage occurs which unless treated within a few hours will almost inevitably lead to some sort of amputation being required, or if there is some slight blood flow, myoglobin from muscle breakdown will find it's way into the whole body circulation; myoglobin is incredibly toxic to the nephrons in the kidney and will rapidly lead to renal failure, which will be perminant if not treated immediately.
Either way, continuing to inject anything made up from pills will lead to a health crisis requiring hospitalization and some debilitating condition that will last THE REST OF YOUR LIFE. You can choose to ingnore the above, but ignoring it will not prevent it from happening. You know know where it's going in a fair degree of medical/physiological detail, so if you continue down this route, you have no-one to blame but yourself.
Oh & BTW, a lot of dystuffs are molecules so large that they are unable to be filtered out by the kidneys & instead effectively block the nephrons from working properly leading to a progressive loss of function of the kidneys. What you're doing is ensuring that you will get debilitating medical conditions very early in your life (if you actually live long enough for that). You've asked & I've explained, so if you choose to ignore the above, don't be surprised if lots of people are quite scathing in their comments about not listening