I tried to make a commandBlock summon a potion. The potion appears for a split second, and then disappears. Below is the command I put in the command block. If the syntax is wrong, please do not mark this as invalid as I did try multiple "solutions"

 /summon ThrownPotion ~1 ~1 ~1 {Potion:{CustomPotionEffects:[{Id:11,Amplifier:10,Duration:1000}]},potionValue:8225}