I have experienced exactly the same. I bought Yogi Berry DeTox and after just the second day (one cup per day) I could not sleep a minute. It kept me up all night despite that there are no stimulants (e.g. caffeine) in this version of the tea, or at least none is indicated on the label. It seems that some of us just might be sensitive to some of the ingredients.
Iaso Tea claims to detox your body to help with losing weight more efficiently and clearing your body of harmful toxins. Their claims of purifying the blood and regulating bowel function also go into this category as well. The claim also seems a bit bold to us since the human body has it’s very own way of breaking down and removing these toxins such as our liver, kidneys, and skin. There isn’t much research done to prove that our body needs extra help with these functions, which makes it a bit useless. 
I personally have benefited greatly by drinking weight loss tea. Also known as herbal slimming teas, not only are these easily available, they are super delicious and you really do not have to spend hours making them. Detox teas or teetox as they are popularly known, gently cleanse the system, kick-start slow or sluggish digestion and also help in burning fat.
Detox teas can aid weight loss by improving the metabolic rate and decreasing water weight (by increasing the urinary output). Regular consumption of detox teas might offer positive results in terms of weight loss. However, it does not result in fat loss. You will need to make lifestyle changes, follow good food habits, and exercise, along with drinking detox teas, to lose fat.
I bought this tea because of the great reviews & I was like looking for something to help with a bloating feeling I’d been having for weeks! I followed the directions & made sure to drink a glass of water before the tea every morning. I feel great! The bloating feeling is gone and I have actually been able to cut my coffee with a lot of cream out of my morning routine! I’ll be buying more for sure!

These teas may be useful for promoting detox, but as constituted the teas are not likely to be effective for significant weight loss. Nevertheless, our research team conducted a thorough investigation on the combination of herbs present in the Yogi Detox Tea. Our findings, as well as the truth behind the effectiveness of this tea, can be found below.
While the benefits are plentiful, there are some important side-effects that you should keep in mind when drinking these teas. For example, when drinking the Original EveryDay Detox Tea, you should consult your doctor before if you have a history of gallstones or other digestive issues. The EveryDay Detox Tea Lemon can cause allergic reactions in those who are allergic to stinging nettle, dandelion, or burdock root.
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