You are taking the right steps. Magnesium is more than likely your main issues along with potassium. Many just simply do not understand the importance of these two minerals.
I would however suggest getting a vitamin and mineral test done. If you do this, tell the doc you want the actual report. If you don’t they will just say “ looked ok” that’s because you might be on the very low normal but not optimal level especially while taking steroids.
I also if not mistaken saw you enjoy some beers, I would highly suggest cutting alcohol out as this depletes many things in your body very rapidly.
If you don’t have these symptoms while not on steroids, then your body is probably just functioning, and I might assume you don’t workout as hard if you aren’t on cycle either, therefore there is less demand for these minerals and other micro nutrients than while on cycle and this is why you start to get symptoms such as back pumps etc.
I would also assume since you are experiencing these symptoms blood pressure might be an issue as well. I would suggest taking 4-8 grams of beet root powder ( in pill form) per day as well. This will reduce those symptoms.
@bickel I tagged you so you didn’t think I ignored your tag [emoji51]
Edit: finished reading down some and saw you did drink. Should have finished reading before I posted lol.