mastic gum and mag-malate

I ordered both the mastic and mag-malate.The supplement facts for the mastic gum says other ingredients are hyrdo oxproply methylcellulose,cellulose,magnesium sterate,
silicon dioxide are these ok? Finally the mag-malate has
100 mg of magnesium(as magnesium amino acid chelate) and
400 of malic acid,is this sufficient?The mag-malate is
from Douglas Laboratories and the mastic gum is from Nutri-
Cology.Are they both ok to use?