I got the advice off another forum:
- 2 grams taurine 3 times a day
- 500mg magnesium 3 times a day
- Bananas and potatoes are good for potassium
Which was echoed in another log I had here:
I have yet to actually try it, because once the crippling pain is over - it becomes next workout’s problem 
I did a Google and found that Taurine relies on B12 for binding, or something to that effect. I stopped reading once I saw the Cyrillic looking characters you only find on calculators, so this is my bro science version of it.
TL;DR: Supplement Taurine and B12 to avoid excessive lower back pumps.