Hi Vonel, thank you for sharing your product review of Qualia Mind. We are sorry to hear that Qualia Mind did not work for your biochemistry. A very small percentage of people have reported some kind of headache or head pressure after beginning Qualia. Some people can get pressure in the head or correspondingly in the neck or jaw from elevating their levels of acetylcholine. There are a number of ingredients in Qualia that are designed to elevate acetylcholine. Some people are more sensitive to this than others. If that's the case, lowering the dose is often times enough to abate this. Also, many people who did feel some head pressure at first continued with their experimentation at the same dose and reported that their headaches went away within a week as their bodies adjusted. We do see that you have reached out to our Customer Support team for a refund and subscription cancelation so you are all set there.