Top 200 Drugs for Android is a fully-featured flash card app that includes main deck, faves deck, ignore feature, shuffle ability, choice of primary side, search feature, index, and easy-to-use interface. Individual cards can be added to or removed from a built-in Faves Deck at any time. Use the Faves Deck to study only the cards that really give you trouble. Cards can also be ignored. If you have mastered a card, just add it to the Ignore List.
Both the Main Deck and the Faves Deck can be shuffled at any point. You can also select which side of the card (front or back) you want as the primary side.