Thanks Kieron
Im trying a brand which is indeed mixed with Caffine and Asprin, they are 100mg capsules which the consultant I got them from said should be plenty for me as competitor brands are only 30mg but are taken more frequently.
I am already aware of some side effects it is having so am taking it early in the morning in order to allow me to sleep at night, and im keeping a close watch on my heart rate and how my body is reacting.

A friend who has taken them previously is taking a couple a day but im not confident in them enough for that much so im sticking with one a day.