Artificial preservatives, colours, flavours, gluten, soy, stimulants, or synthetics are not allowed in these capsules. There are no chemicals, fillers, or parabens in them. You might not have any negative effects on your body, like stomach pain, irritability, or trouble sleeping. There may be a good effect from these capsules as early as the first week. Because they are made of natural ingredients, these capsules can be taken for a long time. There is a chance that these capsules will work better than other things in the body.