Positives

• One patient experiencing Long COVID reported gradual improvement in their condition after incorporating Vitamin D3, K2, and Magnesium into their regimen, noting that “things have started shifting” for the better Reddit.
  
  
• In another report, a patient shared that this combination of supplements contributed to alleviating their post-exertional malaise and shortness of breath, which were part of a broader recovery strategy Reddit.
  
  
• One patient with severe fatigue and headaches found that adding Vitamin D3, K2, and Magnesium to their treatment plan was beneficial, alongside other interventions like pacing and electrolytes Reddit.
  
  

Negatives

• Patients stacking high-dose D3 with calcium-rich diets or thiazide diuretics commonly report symptomatic hypercalcemia presenting as nausea, confusion, abdominal pain and kidney stress, with severe cases requiring IV fluids and steroids PMC.
• Drugs.com flags that combining vitamin D3 with magnesium glycinate can elevate magnesium levels in those with reduced kidney function, producing flushing, drowsiness, low blood pressure and slowed heart rate Drugs.com.

Hurdles & Side Effects

• One individual mentioned the challenge of managing their Vitamin D and B12 levels, highlighting the complexity of supplementing these alongside other treatments for Long COVID symptoms Reddit.