If you listen to the podcast link on this site of Dr Mark Sircus being interviewed, you will hear him say that to stop disease spreading and to remain well,  he recommends 3 things we all should take:

Magnesium Chloride - slap it on, soak in it - just get lots of it. 

Iodine - not only is it the body's natural antibiotic and thyroid support, it also works synergistically with magnesium chloride to develop high volumes of ATP or cellular energy to drive out the toxins, acids, excess calcium and heavy metals from our body. See our detoxified Nascent Iodine which combines with magnesium chloride to develop significant additional ATP for our bodies' cleansing.

Sodium Bicarbonate - to alkalise the body. 

You see, diseased cells can only spread in an acidic environment. As acids, toxins and heavy metals build up in our body, these layers become acidic. This deprives the body of energy and creates an environment for disease to mutate.

But by alkalising and continually generating ATP at high levels, the body is able to eliminate these toxins  out through the kidneys and pores of the skin. This allows the immune system more energy to sustain and rebuild itself.

Bob's Red Mill Aluminium Free Sodium Bicarbonate  is the best there this.   It is extracted by an all-natural water process that uses no chemicals.  Gluten Free.  Weight 453g (16oz)

You can also brush teeth with it to whiten them naturally. Great for baking and bread making.  It is a very diverse product and can also be used for cleaning and deodorising.