Minecraft wiki entry for Healing, associated text: In Bedrock Edition Adding gunpowder to make splash potion decreases its duration, making healing less effective. Splash potion of regeneration heals 1 every 2.5 seconds over 33 seconds, resulting in 13 × 6.5 in total. Amplifying the potion with glowstone increases this rate to 1 every 1.25 seconds for 0:16 seconds, whereas redstone increases the duration to 1:30 minutes, restores 36 × 18.