There's a lot of ingredients in Protetox and none of them can be properly dosed with one 100mg capsule being a days supply. With exception of the vitamins, but they're not going to do all to much to help you lose weight.
Banaba - there's one early study that suggest banaba can inhibit lipogenesis in test cells, [1] but this isn't something that is going to make any real difference to weight loss, there's also the fact that it's only one early study and over the years there have been 100s of promising studies like this, that when tried real world applications simply didn't work.
Guggul - Guggul is rich in anti oxidants which protetox claim helps regulate blood sugar, but honestly there are a lot of ingredients that would be more effective, and generally for ingredients like this to have any effect on blood sugar control they need to be in dosages of grams not one ingredient of a dozen that make up less than one gram. There were positive studies in rats, but again this has the same issue. [2]
Bitter Melon - Bitter melon has only been shown to work in rats [3] eating a high fat diet, the volume was also quite high, a human body weight size does would be more like 10grams in contrast.
Yarrow - Yarrow is typically something that's supposedly used for an improved immune system, it's mildly diuretic which could lead to a loss of some water weight, but again it doesn't belong in weight loss supplements. [4]
Gymnema Sylvestre - There's possibly something here that could work in the protetox weight loss supplement, but there's very limited research. In theory it could activate sugar usage in the body, helping maintain healthy blood sugar levels and reducing cravings, but it's a bit of a stretch. [5]
White Mulberry - There are some studies which suggest that white mulberry could be beneficial [6] but again they're minimal and nowhere near as well backed as ingredients that aren't in protetox. And usually white mulberry is normally dosed at 1gram 3 times per day to be effective, keep in mind a the size of protetox pills is 1 gram. There can't possibly be enough in here to be effective.
Vanadium - Vanadium is often studied in doses of 100mg for people who have poor blood sugar regulation. It is effective for this, so protetox weight loss supplements could help with food cravings in this instance. It is also possible that it's dosed correctly for it's health benefits, and if we're being charitable, well suggest it is, however, if this is the only ingredient in the protetox formula then that's hardly a glowing recommendation. [7]
Vitamin C & E - if you're deficient in either vitamin c or vitamin e then there can be negative effects leading to weight gain, however, these are pretty easy to deal with in other ways that will be more beneficial for healthy weight loss.
And apparently there are traces of Licorice, Cinnamon, Cayenne, Juniper Berries, Biotin Pure, Alpha Lipoic Acid, Taurine, Manganese, Chromium, Magnesium & Zinc which are unlikely to be in any beneficial dose.
References
1 - https://pubmed.ncbi.nlm.nih.gov/10737232/
2 - https://pubmed.ncbi.nlm.nih.gov/25025986/
3 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4306384/
4 - https://pubmed.ncbi.nlm.nih.gov/31888081/
5 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2170951/
6 - https://pubmed.ncbi.nlm.nih.gov/24750800/
7 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7152879/