NutraBio
NutraBio PRE
Fully transparent, no proprietary blends — a well-rounded classic
Last updated: February 17, 2026
Quick Summary
NutraBio PRE is a transparency pioneer with clinical doses of every ingredient. No proprietary blends, no fillers, no compromises — just pure, effective supplementation.
Pros & Cons
Pros
- +100% transparent label with zero proprietary blends
- +Clinical doses of every single ingredient
- +Third-party tested and GMP certified
- +Well-rounded formula for all training styles
Cons
- −Only 20 servings per tub
- −Premium price per serving (~$2.25)
- −Flavor options are more limited than competitors
Key Ingredients
| Ingredient | Dose |
|---|---|
| L-Citrulline | 6g |
| Beta-Alanine | 3.2g |
| Betaine Anhydrous | 2.5g |
| Creatine Monohydrate | 3g |
| Caffeine Anhydrous | 250mg |
| L-Theanine | 300mg |
| Taurine | 2g |
Full Review
NutraBio was championing full label transparency long before it became a trend. PRE is their flagship pre-workout and it reflects their uncompromising commitment to honest supplementation.
Energy & Focus: 250mg caffeine paired with a generous 300mg L-theanine creates a remarkably smooth energy experience. The theanine dose here is higher than most competitors, and you can feel the difference — alert and focused without any jitters or anxiety. It's one of the cleanest energy profiles available.
Performance: Every key performance ingredient is at or above clinical dosing. 6g L-citrulline for pumps, 3.2g beta-alanine for endurance, 2.5g betaine for power, and a full 3g creatine monohydrate for strength. This is a complete performance formula that doesn't cut corners anywhere.
The NutraBio Difference: NutraBio was one of the first companies to disclose every ingredient and dose on their labels — back when proprietary blends were the industry standard. They also include no fillers, excipients, or artificial dyes. The formula is exactly what's on the label, nothing more, nothing less.
Third-Party Testing: Every batch is third-party tested and NutraBio operates in a GMP certified facility. For anyone concerned about supplement quality and accuracy, NutraBio sets the gold standard.
Value: At ~$2.25 per serving with only 20 servings, PRE is on the premium side. But you're paying for truly clinical doses of every ingredient plus third-party verification. No filler ingredients padding the formula.
Taste & Mixability: Grape Berry Crush and Dragon Fruit Candy are the standouts. The flavor selection is more limited than trendy brands, but what they offer tastes good and mixes clean.
The Bottom Line: NutraBio PRE is the choice for purists who want a clean, clinically dosed formula from a company with an unmatched track record of transparency. The higher price per serving is justified by the quality and integrity of the product. If label accuracy and ingredient quality matter most to you, NutraBio PRE is hard to beat.
Frequently Asked Questions
How much caffeine is in NutraBio PRE?▼
NutraBio PRE contains 250mg of caffeine per serving.
How many servings are in NutraBio PRE?▼
Each tub of NutraBio PRE contains 20 servings at a price of $44.99, which works out to $2.25 per serving.
What are the key ingredients in NutraBio PRE?▼
The key ingredients include L-Citrulline (6g), Beta-Alanine (3.2g), Betaine Anhydrous (2.5g), Creatine Monohydrate (3g), Caffeine Anhydrous (250mg), L-Theanine (300mg), Taurine (2g).
Is NutraBio PRE good for beginners?▼
NutraBio PRE contains 250mg 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
The most trustworthy pre-workout on the market
Greg A.
October 15, 2025
NutraBio PRE is my pick for anyone who values quality, testing, and transparency above all else. Third-party tested, GMP certified, and every ingredient is at a true clinical dose. The 250mg caffeine + 300mg L-theanine is one of the smoothest energy experiences I've had. Worth every cent for the peace of mind alone.
Doesn't cut corners — certified quality
Wendy P.
December 11, 2025
NutraBio PRE is what I use when I'm serious about knowing exactly what I'm putting in my body. The third-party testing and GMP certification give me confidence no other brand matches. Formula is excellent too — the pump from 6g citrulline is real and beta-alanine at 3.2g genuinely improves my last few reps.
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