You can make potions/chemicals that have a number of weak effects. They can be poisonous, heal small wounds, increase natural regeneration by 100%, act as steroids without the downsides, cause emotions that can be suppressed if the person who drinks the potion has sufficient willpower, or increase senses by a significant margin. You can also make any mundane chemical with ease. Your potions can do a number of other things, but they're all fairly weak.