The meter at top of the HUD indicates how much health your character has left. Whenever you’re attacked, health is drained from the health meter, which consists of several blocks. Sometimes attacks don’t drain a block fully, and the block will blink red. If you can avoid enemy attacks for a few seconds your health block will be restored. Any fully lost blocks remain empty unless they are replenished by a health pill. One health pill fills up one block. Health pills are created by mixing and using herbs. If you use a pill while a block is flashing, that block will be stabilized and you will regain another block of health.