Hello Tarahere! Yes most brands of vitamins are synthetic made from isolates from chemical sources. I looked into New Chapter since I have an uncle who was taking them and from what I could gather is that they take some synthetic vitamins and culture it in nutritional yeast to make it a living vitamin and add some green foods into the formula.
I would look into http://www.truthinlabeling.org
for info on MSG
and other sources of MSG or names. You will see that nutritional yeast is grown just like its cousin MSG by the big flavor houses. Words like Natural flavors is a sign of MSG. Look into this more in research for a better supplement. Also, Dr. Baylock I believe wrote a book about this flavor enhancers and toxins.
I switch my supplements around and include Lifeforce and Fruitharvest by daystarbotanicals into nutritional program. Ons serving is like getting about 10 servings of Fruits and vegies. I also take flaxoil,blackrasspery oil and some brownwoodacres.com cherry flex and blueberryIQ made from real whole fruit./ Before this I was taking isolated vitamins.
You could make your own superfoods by purchasing the individual ingredients as another option to make it more cost effective! These superfoods will be whole-food sources vitamins,minerals,amino acids, plant enzymes,phytonutrients, etc that your body needs in order to digest them into your body.
So first look to whole foods grains,vegies,fruits and try to eat as much raw fruits/vegies you can to get all the vitamins/minerals & enzymes and then look to some of these whole food supplements to make your meals more nutritionaly dense.
I hope this helps a little just remember your food is medicine and medicine is food!