Synonyms for supplement: to add, to increase.
add-on, supplement
supplement
optional extra, addition, add-on, supplement, bonus, luxury, trimming, treat, extravagance
The enclosed documents are supplement to the original documents presented.
Another right angle.
tosefet (תוספת)
eke
eke out
Complement . . . another angle, of 53 degrees Supplement . . . another angle, of 143 degrees
The supplement should specify that it is organic. You can see this by reading the front and back of the supplement bottle/box it comes in and finding the word "organic".
Supporting
Before purchasing an antioxidant supplement, you should find out whether the supplement is FDA approved. Another thing you should look for is previous users of the supplements.