Hi Leora,

You won't find a multivite with sufficient porassium or magnesium. I'm afraid you'll need to take them separately.

Magnesium is best taken in combination with calcium in 2cal:1mag ratio. Adults need 1000:500 (post menopausal women 1500:750).

Potassium can be taken either by taking tablets, or just by switching to a potassium salt such as Nu Salt or No Salt (just sprinkle on your food, as with normal salt).

The Drs Eades (authors of Protein Power) suggest that early in low carbing an extra 400mg daily is a good idea.
If you take the tablets, they should be taken in divided doses, and with food, as they may otherwise cause stomach irritation.

Are you drinking plenty of water? You will especially need plenty while taking potassium.

One more thing: People who are taking tablets for high blood pressure or fluid tablets should not take potassium supplements without first checking with their pharmacist.

Cheers.

Rosebud