Hi Barb,

Re: the Vitamin C
The usual vitamin c is ascorbic acid and may irritate the stomach in some persons causing diarrhea or in dosages that are too high.

To offset this acidity take calcium at the same time as ascorbic acid (Vit C), or Ester C (brand name but usually expensive), or calcium ascorbate (a combination of ascorbic acid and calcium which is non acid.)
Also children require extra calcium during infections and fever. It prevents the second teeth developing in the gums from being destroyed by a fever.
The drug store sucking kind of Vitamin C usually is Sodium Ascorbate - which I don't usually recommend, especially if nat mur is the acute remedy.

Infections that you give ars alb for also shouldn't take sour foods/acid so you could use non acid Vit c in the from of calcium ascorbate.

Take care,
Carole