Apollon Nutrition
Lionheart
Combat-tested energy for serious athletes — intense without the chaos
Last updated: February 18, 2026
Quick Summary
Apollon Lionheart is the mature sibling of Assassin — 300mg caffeine with L-theanine, 8g citrulline, and Alpha-GPC. Intense but controlled. A better daily driver for serious athletes.
Pros & Cons
Pros
- +300mg caffeine with L-theanine for controlled, smooth high-stim energy
- +Comprehensive formula: pumps, endurance, focus, and energy in one
- +Better daily driver than Assassin while still being high-stim
- +30 servings — better value than most Apollon products
Cons
- −300mg caffeine is still too much for caffeine-sensitive users
- −Premium price point
- −Less extreme than Assassin — may underwhelm Apollon's die-hard fans
Key Ingredients
| Ingredient | Dose |
|---|---|
| L-Citrulline | 8g |
| Beta-Alanine | 3.2g |
| Betaine Anhydrous | 2.5g |
| Caffeine Anhydrous | 300mg |
| L-Theanine | 150mg |
| Alpha-GPC | 300mg |
Full Review
If Assassin is Apollon's sledgehammer, Lionheart is their precision instrument. Named after the warrior's mindset, Lionheart is designed for the serious athlete who wants a genuinely high-stim experience with more control and a better ingredient profile for sustained performance.
Energy Quality: 300mg caffeine is legitimately high-stim, but paired with 150mg L-theanine, the experience is controlled rather than chaotic. Where Assassin comes on like a freight train, Lionheart builds progressively — sharp, focused energy that doesn't tip into jitteriness or anxiety. This is a pre-workout you can train on without second-guessing whether you took too much.
Pump & Performance: 8g L-citrulline is at the upper end of the market, matching Gorilla Mode and surpassing most competitors. Combined with 2.5g betaine for power output, the performance ingredients are just as serious as the stim complex. This isn't a stimulant product that neglected the pump — it's a complete formula.
Cognitive Edge: 300mg Alpha-GPC is a standout addition. This is the same dose used in many nootropic pre-workouts as a primary ingredient, providing genuine focus enhancement, mood support, and mind-muscle connection benefits. Lionheart excels as a training tool because it makes you not just energized, but mentally locked in.
Who It's For: Experienced gym-goers with established caffeine tolerance who want a premium, complete formula. Athletes who need serious energy but prefer control over chaos. Anyone who tried Assassin and wanted the quality without the extreme edge.
The Bottom Line: Apollon Lionheart is arguably the best formula in Apollon's lineup for most serious users. Better pump ingredients than Assassin, smoother energy via L-theanine, and the addition of Alpha-GPC make this a more complete and versatile performance product. At 30 servings it's also better value. Highly recommended for experienced users.
Frequently Asked Questions
How much caffeine is in Lionheart?▼
Lionheart contains 300mg of caffeine per serving.
How many servings are in Lionheart?▼
Each tub of Lionheart contains 30 servings at a price of $49.99, which works out to $1.67 per serving.
What are the key ingredients in Lionheart?▼
The key ingredients include L-Citrulline (8g), Beta-Alanine (3.2g), Betaine Anhydrous (2.5g), Caffeine Anhydrous (300mg), L-Theanine (150mg), Alpha-GPC (300mg).
Is Lionheart good for beginners?▼
Lionheart contains 300mg of caffeine, which is a high stimulant dose. It's generally recommended for experienced pre-workout users. Beginners should consider starting with a lower-caffeine option.
What Others Are Saying
Apollon's stim-free offering is surprisingly excellent
Chris M.
December 14, 2025
I wasn't expecting a stim-free product from Apollon — they're known for hardcore stim formulas. But Lionheart is outstanding. Massive pump stack with clinical doses of multiple nitric oxide compounds. The pumps rival or exceed caffeinated products I've used. Perfect for evening training or stim cycling.
Best pump from any stim-free product
Julia H.
January 24, 2026
Apollon Lionheart provides the best pump I've experienced from a stim-free product. The multi-pathway approach to nitric oxide production (different ingredients targeting different mechanisms) results in sustained, intense fullness throughout training. If you're caffeine sensitive or doing an evening session, this is my top recommendation.
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