candisufferer
Either you aren't taking enough of either magnesium nor Vit C to get the effect you are looking for. Either will work, with high enough doses.
The body needs much more Vit C than anyone can imagine when ill. Are you saying you took 55,000 mgs and nothing? or, 5,500 mgs and nothing? When ill, 5,500 mgs is not that much to expect Gi intolerance. You might have to go well over 10,000 mgs for GI-I. I been using well over 5,000 mgs daily to no effect at all for a while now. Other than when using ab
sorbic acid I felt nauseous and tired. Love Ester C...well worth the cost.
Perhaps you got fouling smelling gas/pain from the immune system working better, as in killing off bad bacteria or, being a more hospitable environment for good bacteria. Or, the immune system is helping rid candida, thus more bacteria to make gas? Dunno.....interesting as I have suffered from this when using high doses of probiotics, didn't suspect vit c having any influence on these symptoms.
You might consider oxy colon cleanse. It works for sure, rather quickly..if in a real pinch.
Anyway, wish you healing blessings