The short answer · Endurance performance
Take caffeine anhydrous, beta-alanine & citrulline malate for endurance performance. This is the one to buy.

Animal, Fury® Essentials, Pre Workout, Green Apple, 1.06 lb (483 g)
4.7· 283 ratings· $1.14/serving
Caffeine Anhydrous 350 mg — inside the studied 200-600 mg window
Of 2,431 products scored for Endurance performance, Animal, Fury® Essentials, Pre Workout, Green Apple, 1.06 lb (483 g) ranks #1 with a DoseRank score of 84. Caffeine Anhydrous and Beta-Alanine are the strongest evidence signals for this outcome.
Retailer links may be affiliate links. Rankings and placement are never paid.
The form“Why Caffeine Anhydrous, Beta-Alanine & Citrulline Malate?”Evidence Strong evidence
Caffeine Anhydrous and Beta-Alanine are the strongest evidence signals for this outcome.
- Caffeine AnhydrousThe pick
Strong evidence · 350 mg
Dehydrated, water-free caffeine; delivers a precise, fast-acting stimulant dose, which is why it dominates pre-workout and weight-management formulas.
- Beta-AlanineThe pick
Strong evidence · 2000 mg
Non-essential amino acid that buffers acid in muscle via carnosine; extends muscular endurance and causes harmless skin tingling (paresthesia) at effective doses.
- Citrulline MalateThe pick
Strong evidence · 6000 mg
Citrulline bound to malic acid; raises arginine and nitric oxide more effectively than arginine itself, supporting endurance and reducing exercise fatigue.
The dose“Is the dose actually effective?”Dose fit 72
2 of 3 dosed ingredients land in the studied range. Caffeine Anhydrous at 350 mg lands inside the studied 200-600 mg window.
Caffeine Anhydrous
Studied window 200-600 mg · this pick 350 mg
Beta-Alanine
Studied window 3200-6400 mg · this pick 2000 mg
Citrulline Malate
Studied window 6000-8000 mg · this pick 6000 mg
The ranking“Why should I trust this pick?”Trust 61
Mixed trust signals — ratings are positive but the base is limited. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.
- 2,431 products scored
- Never paid placement
- Evidence level: Strong · 88
- 307 brands
- 25 ingredients
The price“Can I do better than $1.14 a serving?”Value 37
$1.14 per serving — high price tier for this outcome. The cheapest ranked pick here is $0.08 per serving.
- 5Nutricost, Caffeine, 200 mg, 120 CapsulesScore 83 · $0.08/servingiHerb
- 10Nutricost, Guarana Powder, 3.5 oz (100 g)Score 82 · $0.14/servingiHerb
Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.
Ready?
The #1 pick is $1.14 a serving.Animal, Fury® Essentials, Pre Workout, Green Apple, 1.06 lb (483 g) — in stock at a tracked retailer.
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Animal, Fury® Essentials, Pre Workout, Green Apple, 1.06 lb (483 g) ranks #1 for Endurance performance with a DoseRank score of 84. The score blends clinical strength, evidence, dose fit, trust signals and value across 2,431 products scored for this outcome.