Caffeine for those with potential ADD/ADHD, or who like to measure out their caffeine intake.
I ordered the "tropical" variation of caffeine plus NALT (N-acetyl L-Tyrosine), several days ago and have just received it in the mail. I must remark on the bad taste of the tincture, which is not sufficiently removed by rinsing with water. However, the formulation and method of dispensing (1mL dropper) allow for the user to accurately measure out anywhere between 30-100mg of caffeine. This is very advantageous if you want to use a sparing amount of caffeine towards the evening, without it interfering with your circadian rhythm (sleeping habits).
The NALT added to the tincture is commonly used as a mediator for rebalancing dopamine synthesis naturally within the body. This has been observed to be helpful for those taking stimulant medication, such as D-amphetamine (Adderall), as it restores the amount of dopamine utilized by the central nervous system. However, it may not necessarily be excessively helpful for those without a dopamine deficit (such as those individuals with ADD/ADHD).
Overall, the product works as intended. Keep a flavored drink nearby, as the product is very bitter in regards to its taste.