![Has anyone tried it?I have tried pure caffeine with L-theanine, but this is uncomfortable for me, although I have been drinking a lot of strong coffee for 30 years. These capsules are Has anyone tried it?I have tried pure caffeine with L-theanine, but this is uncomfortable for me, although I have been drinking a lot of strong coffee for 30 years. These capsules are](https://i.redd.it/479s2ymvqui71.jpg)
Has anyone tried it?I have tried pure caffeine with L-theanine, but this is uncomfortable for me, although I have been drinking a lot of strong coffee for 30 years. These capsules are
Spent Coffee Grounds as a Versatile Source of Green Energy | Journal of Agricultural and Food Chemistry
![I saved hundreds of dollars by using caffeine pills instead of buying energy drinks and coffee : r/Frugal I saved hundreds of dollars by using caffeine pills instead of buying energy drinks and coffee : r/Frugal](http://i.imgur.com/BdO9n.jpg)