Magnesium

I have read on this forum that magnesium Has helped people with MAV, I have ordered the Kal brand as that seems the recommended brand on here…it’s taking ages to arrive as its not sold in the uk…hopefully it should be with me soon.
Can anyone who has had success with magnesium tell me what dosage they took, I have also just started vitamin b2 a 400 mg tablet per day and have also ordered feverfew .
Appreciate any comments.

I’m using Holland and Barratt’s Solgar Magnesium Citrate. Not noticed much of improvement in symptoms but suspect I have less brain wobbles.