Dark Labs CRACK Pre-Workout features 2-aminoisoheptane as the key ingredient, which Dark Labs shares increases norepinephrine levels and results in better neural connections and improves muscle performance. There is also 200 milligrams of caffeine per scoop and a variety of other ingredients to help improve your workout. According to Dark Labs, this pre-workout improves focus, strength, power, energy, and endurance. Dark Labs also claims this pre-workout can also support an increase in muscularity and body composition.
Customer reviews for Dark Labs CRACK are very limited and positive. Users share that this supplement gives them very intense focus and helps them maintain energy throughout their workout and for the rest of the day. Some reviewers shared they only use a half scoop because of how potent the product is.