Legion Pulse Pre-Workout Review

Two things, both verifiable on the label. First, it's naturally sweetened and flavored with no artificial dyes — unusual for a fully-dosed pre-workout, most of which lean on sucralose and added colors. Second, Legion states its products are manufactured in ISO 17025-accredited labs and publishes lab testing, which is a stronger third-party-quality signal than most competitors offer. Combined with clinical doses that are all disclosed (8 g citrulline, 3.6 g beta-alanine, 2.5 g betaine, 300 mg Alpha-GPC), it's the formula to reach for if you want research-level actives without artificial sweeteners or dyes.

It's a strong dose, but it's deliberately buffered. Pulse pairs 350 mg of caffeine with an equal 350 mg of L-theanine, the amino acid associated with smoother, calmer focus — the same caffeine-plus-theanine logic behind the popular 'smart caffeine' stack. For a habitual coffee drinker that 350 mg is a solid pre-training jolt; for someone caffeine-sensitive it may be too much late in the day. Importantly, Legion also sells a caffeine-free version of Pulse with the identical actives, so you can get the full pump-and-endurance formula with zero stimulant if you train in the evening.

Because the full dose is two scoops. Pulse delivers its 8 g of citrulline and 3.6 g of beta-alanine across a roughly 22.76 g two-scoop serving, which is genuinely fully-dosed but means each tub yields fewer servings than single-scoop competitors — and at about $2.14 a serving it's one of the pricier picks here. You're paying for clinical doses and all-natural sweetening, not getting short-changed, but if cost per serving is your priority, Nutricost (#4) at 60 servings is dramatically cheaper.

No. Like Transparent Labs, Legion positions creatine as a separate product rather than bundling it into the pre-workout, on the logic that creatine is best dosed daily at 3-5 g to saturate muscle over time rather than only on training days. If you want creatine in the same scoop, Kaged Pre-Workout Elite (#3) includes 5 g and Gorilla Mode Nitric (#7) includes 5 g in its stim-free stack. With Pulse you'd add creatine separately.

They're close — both are fully-disclosed, naturally-sweetened, clinically-dosed formulas, which is why they sit at #2 and #1. The deciding factors: BULK has the slightly stronger actives (4 g beta-alanine vs 3.6 g) and a more moderate 200 mg caffeine, and works out cheaper per serving. Pulse counters with a higher 350 mg caffeine buffered by matching L-theanine, an explicit caffeine-free option, and Legion's ISO 17025-accredited lab testing. If you want the smoothest moderate-stim default, BULK; if you want a stronger caffeine hit (or a true stim-free version) plus published lab testing, Pulse.

1. [1] Pérez-Guisado 2010 PMID 20386132 — Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness. A single 8 g dose of citrulline malate significantly increased bench-press repetitions and reduced 24-48 h soreness versus placebo. The human trial behind Pulse's 8 g citrulline dose — at the level the evidence supports.
2. [2] Hobson 2012 PMID 22270875 — Effects of β-alanine supplementation on exercise performance: a meta-analysis. Pooling 15 studies, beta-alanine improved performance with the benefit concentrated in 60-240 s efforts, dosed around 3.2-6.4 g/day to saturate muscle carnosine. The basis for Pulse's 3.6 g beta-alanine — above the standard research dose, effective over weeks rather than from one scoop.
3. [3] Guest 2021 PMID 33388079 — International society of sports nutrition position stand: caffeine and exercise performance. The ISSN position stand puts caffeine's effective range at ~3-6 mg/kg pre-exercise. Pulse's 350 mg is a strong dose (around 4-5 mg/kg for an 80 kg lifter) — within the ergogenic range but high for the caffeine-sensitive, which is why the caffeine-free version matters.