Hi Keisha, Senna tea works nicely! Don’t over-use it though. Once every 2-3 days during your fast is enough. Also, the intensity is governed by the amount of time you steep the bag. I usually steep for 6-8 minutes. My wife steeps for under 5 minutes and gets the same effect that I get (a bowel movement in a few hours). Experiment.Keep in mind this is not a deep intestine cleanse.
As I stated earlier, if your diet was very bad for the last several years you need more. There are oral cleanses for the intestines that involve a 30+ day regiment of minerals like clay and charcoal in capsules. A restrictive diet is required during the cleanse. This cleanse is also good for parasite elimination. You can search online to find it.