Double Dose is a three reel, one payline, and two coin slot machine. It has a wild, multiplier symbol and the maximum payout is 1,600 coins. The Double Dose. symbol is wild and substitutes for any other symbol to complete winning combinations. A single Double Dose symbol doubles the payout of any combination it completes. Two Double Dose symbols quadruple the payout of any combination they complete. Name of this page is Combination Payout Symbol Complete Winning Dose Combinations Wild Double Slot.