
Transparent Labs
Transparent Labs Stim-Free
Clinical doses, zero caffeine — the gold standard goes stim-free
Last updated: February 18, 2026
Quick Summary
Transparent Labs Stim-Free brings the same clinical dosing philosophy to the caffeine-free space. Every ingredient is fully dosed and disclosed — just without the buzz.
Pros & Cons
Pros
- +Fully transparent, clinically dosed formula — zero proprietary blends
- +6g citrulline malate + 4g beta-alanine at full clinical doses
- +No artificial sweeteners, colors, or preservatives
- +Perfect for evening training or caffeine-sensitive users
Cons
- −Premium price point for a stim-free product
- −Large scoop size due to clinical doses
- −Fewer flavor options than caffeinated version
Key Ingredients
| Ingredient | Dose |
|---|---|
| Citrulline Malate | 6g |
| Beta-Alanine | 4g |
| BetaPure Betaine | 2.5g |
| Taurine | 1.3g |
| Vitamin D3 | 3000IU |
| Boron Citrate | 120mg |
Full Review
Transparent Labs Stim-Free takes everything that makes their BULK formula the gold standard and removes the caffeine. The result is one of the best stim-free pre-workouts available.
Pump Quality: 6g citrulline malate delivers genuine, noticeable pumps. It's not the highest dose on the market (Gorilla Mode hits 9g L-citrulline), but paired with 2.5g betaine and the overall formula quality, the pump experience is excellent and sustained.
Performance: 4g beta-alanine is above the 3.2g clinical threshold, providing full endurance benefits. The 2.5g betaine supports power output. You'll notice you can push harder and longer — even without caffeine driving you forward. Taurine at 1.3g adds fatigue reduction and hydration support.
The Transparent Labs Philosophy: As with all their products, every single ingredient and its exact dose is printed on the label. No proprietary blends, no fillers, no artificial junk. You know exactly what you're putting in your body.
Who Should Use This: Evening lifters who don't want caffeine disrupting their sleep. Caffeine-sensitive individuals who still want clinical performance doses. Anyone cycling off stimulants while maintaining training quality. People who want to stack with their own caffeine source of choice.
Taste & Mixability: Blue Raspberry and Strawberry Lemonade carry over from the BULK line and taste great. The large scoop size (due to actual clinical doses) requires adequate water — at least 12oz.
Value: At ~$1.67 per serving, it's premium-priced for a stim-free product. But you're paying for genuine clinical doses of every ingredient plus Transparent Labs' commitment to clean formulation. Compare the per-gram ingredient cost and it's competitive.
The Bottom Line: If you trust Transparent Labs for their caffeinated products, the Stim-Free version delivers the same uncompromising quality without the buzz. It's our top-rated stim-free pre-workout for anyone who prioritizes clinical dosing and label transparency above all else.
Frequently Asked Questions
How much caffeine is in Transparent Labs Stim-Free?▼
Transparent Labs Stim-Free is a stimulant-free pre-workout with 0mg of caffeine.
How many servings are in Transparent Labs Stim-Free?▼
Each tub of Transparent Labs Stim-Free contains 30 servings at a price of $49.99, which works out to $1.67 per serving.
What are the key ingredients in Transparent Labs Stim-Free?▼
The key ingredients include Citrulline Malate (6g), Beta-Alanine (4g), BetaPure Betaine (2.5g), Taurine (1.3g), Vitamin D3 (3000IU), Boron Citrate (120mg).
Is Transparent Labs Stim-Free good for beginners?▼
With 0mg of caffeine, Transparent Labs Stim-Free has a stimulant-free stimulant profile that can be suitable for beginners. Always start with a half dose to assess tolerance.
What Others Are Saying
The best stim-free pre-workout exists
Rachel H.
November 3, 2025
I'm pregnant and can't have caffeine, so finding a stim-free pre-workout that actually performs was critical. TL Stim-Free delivers real performance without any stimulants — 8g citrulline, 4g beta-alanine, and betaine at clinical doses means I'm not missing the caffeine. Same transparent quality as all TL products. Absolutely recommend.
Finally taking stims break and this makes it easy
Victor L.
December 26, 2025
After 3 years of high-stim pre-workouts I decided to take a stimulant reset. Transparent Labs Stim-Free makes it painless — the pump and performance from clinical doses of citrulline, beta-alanine, and betaine is genuinely impressive without caffeine. I actually think my pumps are better on this than on some caffeinated options I've tried.
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