Transparent Labs BULK Black Pre-Workout | High-Stim Formula

The Hardcore Pre-Workout for Stim Lovers. No Limits.

Transparent Labs BULK Black is the pinnacle of clinically dosed, high-stimulant pre-workout supplementation. If you’ve tried the regular BULK formula and want to take things up a notch — this is it. Over 17 grams of active ingredients per scoop, dialed in for athletes who train hard and demand more from every session.

Every ingredient is dosed according to scientific evidence. Every label is fully transparent. And like all Transparent Labs formulas, BULK Black contains zero artificial sweeteners, flavors, food dyes, or added sugars.

What BULK Black Delivers

• Intense Muscle Pumps — Clinical doses of L-Citrulline, Beta-Alanine, and Betaine Anhydrous drive blood flow and skin-splitting pumps from the first set
• Hardcore Energy & Stimulation — PurCaf® organic caffeine delivers a powerful, clean energy surge without the post-workout crash
• Laser Focus & Mental Drive — AlphaSize® Alpha-GPC, L-Tyrosine, and Taurine create a psychotropic rush of focus and drive that keeps you locked in
• Strength & Lean Muscle Support — Science-backed muscle fortifiers and natural testosterone-supporting ingredients prime your body for growth and recovery
• Peak Athletic Performance — A comprehensive, evidence-based formula built for dedicated athletes who refuse to leave anything in the tank

Key Features

• Fully transparent label — every ingredient and dose disclosed, no proprietary blends
• Informed Choice Certified — third-party tested for purity, potency, and banned substance safety
• Naturally sweetened with Stevia — no artificial sweeteners, colors, or added sugars
• 4 flavors available — Blueberry Pomegranate, Black Cherry, Peach Mango, Cherry Kiwi

Who it’s for: Experienced pre-workout users who want maximum stimulation, intense pumps, and a formula that matches their intensity. If you’re new to pre-workouts, start with BULK before stepping up to BULK Black.