Your opinion of these prenatals?

I'm 7weeks today and have been taking some off brand prenatals since I got a positive test but am thinking about switching to GNC's pregnancy pack as I have been researching more. Their pregnancy pack contains a multivitamin that has 1000mcg folic acid, a 200mg dha, and 1200mg calcium pill. What's your opinion? It's greatly appreciated! Thnx!