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.
Lemongrass is a plant. The leaves and oil are used for medicine. It is used in Asian cuisine, and as a fragrance in soaps and cosmetics. Lemongrass is used to help with exhaustion. Several studies explore the benefits of lemongrass. According to a study published in Journal of Ethnopharmacology, “In all the tests employed, oral doses of [lemongrass] were without effect.
_{Iaso tea claims to provide a boost in mental and physical energy as a result of all the “detoxifying” and “weight loss aid” effects. This is one of the more believable claims (along with natural weight loss) since the tea itself becomes a big motivator for people to be healthier. Not only is the tea packed full of healthy, antioxidant-packed ingredients, but as you start eating healthy and exercising consistently, you become more energized naturally.} 
Iaso Tea’s side-effect is that you’ll have improved mental and physical energy. Chances are, the foods/drinks that the Iaso tea replaces are responsible for your morning brain fogs, afternoon fatigues, and lack of motivation. When you phase them out, you’ll “feel” life like you never have before. You’ll wake up in morning feeling energized and happy. You won’t experience those afternoon crashes. You’ll stop living life like a zombie and will finally be able to enjoy everything you do.
Another way you can consume the tea is to drink it regularly 20-30 minutes before two of your meals per day to begin the stretching of your stomachs receptors. This sends a signal to your brain that food is present in your stomach, and the soluble fiber then enters your digestive tract 20 minutes after consuming. This can then allow your body to release hormone signals to the hypothalamus, which will help your body create the “full factor” response to your brain when eating your meal. This results in you feeling fuller while eating less during your meal and prevents overeating or snacking afterward.
When shopping for a weight loss/detox tea, it’s important to know the difference between a product that is a great value and one that is a higher price than it should be. Currently in the market, a great price for a detox tea is a little over $1.00 per serving. When teas start to go up to around $2.00 per serving or higher, they are considered pricy. And with anything far less than $1.00 per serving, we may start to question the quality of the teas.

Note: Detox teas aren’t regulated by the FDA and may contain ingredients or additives that may be detrimental to your health in the long run. Excessive consumption of detox teas may lead to bloating, dehydration, diarrhea, electrolyte imbalance, gas, and nausea. Hence, it is important to consult a dietitian before going for detox teas, especially if you want to lose weight.

We like to look at Iaso Tea as similar to weight loss supplement stacking, but instead of stacking with multiple supplements, they are all blended into one tea. Since the tea is all-natural and not claiming to have some secret special weight loss ingredient, we can believe that the product isn’t supposed to only be a super fast-acting product. You must drink the tea over a sustained period while continuing your healthy eating and workout regimen.  
Same experience with Skinny Bunny Tea customer service. I paid for my order on Feb.17 and finally it is being shipped. I tried to contact someone with company this past Monday with no respond via email or cell. I called the company and it went straight to voicemail. I left a message and still no answer. Finally today after my order shipped, some guy named William emailed me and basically said they are having delays due to high demand. Just know, expect the wait!! I most likely will get my package next week. (2 weeks from order date). So I went on instagram and wrote what I just did, and they deleted my comment too. I called them out and they put it back up. But I have been trolling their account and telling people to expect their orders two weeks out. I will never purchase from them again.
Both nutritionists we spoke to agree that drinking tea when you wake up and before bed can help your system rev up and calm down, depending on which variety you choose. If you're a tea fanatic, work in a few cups throughout the day: Unless you're sensitive to caffeine, you can probably handle five to seven cups a day without any negative side effects, says Lagano.
Charushila Biswas is a Senior Content Writer and an ISSA Certified Fitness Nutritionist. She is an alumni of VIT University, Vellore and has worked on transgenic wheat as a part of her Masters dissertation from NRCPB (IARI), New Delhi. After completing her Masters, she developed a passion for nutrition and fitness, which are closely related to human psychology. And that prompted her to author a review article in 2015. She has written over 200 articles on Fitness and Nutrition. In her leisure time, Charushila loves to cook and enjoys mobile photography.
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.