The 1 capsule a day did kill some things...but it was not enough to help quell the die off symptoms. 4 capsules per day is the perfect blend to not only kill parasites and remove toxins but to also help support the body and help with die off symptoms.
This is why too little or too much in herbal medications is not good. You have to have the right balance.
Take it even if you have some food in your stomach. IDEALLY you should have an empty stomach, but I would rather see you take the full daily dose with a little food than skip doses because of food in the stomach.