Beast Bulk is basically regular Bulk with one addition: 1.5g Nitrosigine.
Energy and focus feel the same to me. The difference is pumps and fullness — and I notice that difference more than I expected from one added ingredient. If you're expecting a high-stim "beast," the name oversells that part.
Longtime Bulk users switching over is a theme I keep seeing in retailer feedback too — people notice the Nitrosigine addition specifically. I'm summarizing that pattern, not restating individual reviews.
The Nitrosigine is the whole reason to pick Beast over Bulk. It's a pump upgrade, not an energy upgrade.
There's exactly one substantive difference. Visually:
For me, yes — but specifically for fullness and pumps, not energy. Nitrosigine (bonded arginine silicate) is a nitric-oxide support ingredient, so a better pump is exactly the effect you'd expect it to add on top of Bulk's existing citrulline and betaine.
Current Beast retailer feedback repeatedly mentions people noticing the Nitrosigine addition, and longtime Bulk users moving to Beast. That's the general theme — I'm not mixing external star ratings into FitFrek's verified reviews.
Be clear on this before buying: Beast Bulk is still a 200mg-caffeine, Bulk-like experience — not a high-stim product despite the "Beast" name. The stimulant and focus profile is unchanged from Bulk.
One serving in water 20–30 minutes before training. Start with half a serving if you're stimulant-sensitive or new to a fully-dosed pre-workout. Stick to one serving, and count caffeine from all sources — including Hydrate Black if you're stacking it — against your daily tolerance.
If you're pairing it with Hydrate Black for intra-workout caffeine, count that additional 100mg toward your daily total.
Beast Bulk is not currently listed on Transparent Labs' main store.
Formula base (non-Nitrosigine doses): Transparent Labs Bulk Supplement Facts. Beast "Bulk + 1.5g Nitrosigine" status, 30-serving format and Sour Gummy details: 2026 Beast Bulk reporting (Stack3d).
Note: there isn't a normal, verifiable standing official Beast product page the way there is for Bulk, so provenance is stated as current Bulk label + Beast reporting rather than a single official Beast panel.
