Help on supplementing with magnesium

I've decided after doing a little research, to add magnesium into my health routine. From my findings it appears that most if not all of us are very deficient in magnesium!

So I purchased Mega-Mag 400mg that's low sodium, contains trace minerals and is from the brand TraceMinerals Research. The instructions say to take 1/4 of a teaspoon daily and increase as needed.

Any tips on what time of the day is best to take the magnesium? And what dosage I should work my way up to or should I just stick to the 1/4 teaspoon?

I'm about to carry out a juice fast, is it okay to supplement with magnesium during this?

I suffer with anxiety, depression, Seborrheic Dermatitis and fatigue if that also helps with any info anyone could give me.

Thanks in advance.
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