IMO, get a personal diagnosis from a well-experienced practitioner of traditional Tibetan medicine, traditional Chinese medicine, Ayurveda, naturopathy, or homeopathy and then do what the "doc" recommends. I agree that the idea of "cleansing toxins" is much abused in the alternative health care world. During my 30+ years of clinical practice, I have seen many patients who have done "over the counter" cleanses and made their health worse, not better. Other than Dharma (and even here there are 84,000 teachings for 84,000 "diagnoses"), I know of no universal panaceas. Nothing is good for everyone.
Some questions worth asking:
A) How do you know you have toxins that need cleansing?
B) What is the specific nature of those toxins? I.e., where'd they come from? Where are they located in the body? What is/are the disease mechanism or mechanisms that they have initiated?
C) What is the professionally agreed upon method for ridding those toxins from the body as opposed to some wishy-washy generic idea of toxins? Another way of putting this is to ask how good the evidence is for the treatment you are contemplating.
D) What are the signs of having successfully accomplished this cleansing of toxins?
BTW, you might also want to ask yourself who is it that thinks they have toxins?
Good luck and best wishes.
Pema Chophel པདྨ་ཆོས་འཕེལ