Berserker Focus
Berserker Focus
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The pre-workout built around focus first.
Most pre-workouts chase energy and let focus tag along. Berserker Focus is built in the opposite order: L-tyrosine for focus under stress, Alpha GPC for the mind-muscle connection, and enough caffeine to drive it. Every dose is on the label.
Lighter on stims than Shadow, which makes it the right first Hollow pre-workout. It also holds up outside the gym: studying, gaming, long workdays.
One scoop, 20 to 30 minutes out. Flavors: Peach Tea, Sour Cherry.
Not sure this is the one? See the pre-workout selector.
Full label. Clinical doses. Made in the USA, ships daily, free shipping over $75.
Questions about anything on the label? Email us. The founder answers.

10/10 for workouts and for study/deep work.
1/2 to 3/4 scoop works great - most won't need a full scoop, so it lasts longer than the # of servings suggests.
Flavor is on point, too. Can't recommend enough.
What surprised me was how productive I was after the gym. The mental benefits don’t wear off quickly.
Never had this level of mental clarity from a supplement. Great for early lifts or when I’m low on sleep.
Feels like I enter a different gear mentally. That’s what makes this stand out.