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Onnit is a unique fitness company. On the equipment side, they focus less on barbells and more on off-balanced workout equipment like kettlebells, maces, and clubs. Their supplements are known for eschewing artificial ingredients, the most popular of which are likely their nootropics Alpha Brain and Shroom Tech. But their pre-workout is particularly unusual: it has no caffeine or stimulants of any kind.

Yet a Florida State University study found that after 4 weeks of training, it improved strength in a group of powerlifters better than a placebo.(1)

I found that the ingredients may be effective for helping to retain muscle and improve focus and endurance without overstimulating your nervous system.

So what’s in it?

Onnit Total Strength + Performance

An all natural, stimluant-free preworkout with ingredients linked to hormonal health.

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Onnit Total Strength + Performance Nutrition & Ingredients

In two scoops there are 15 calories and 4 grams of carbs.

The ingredients are broken up into three main proprietary blends — that means we don’t know how much of each ingredient is present. I’ll discuss the effects of the ingredients in the next section.

First there’s the Onnit Performo Blend, which has branched chain amino acids, glutamine, and beta alanine.

The Onnit Power Blend has d-aspartic acid, mucuna pruriens extract (also called velvet bean), eurycoma longifolia root extract (also called longjack), and stinging nettle extract.

Then there’s the Onnit Support Blend, which has red clover extract, luteolin, amd resveratrol (from Japanese knotweed).

The other ingredients include five milligrams of black pepper extract and some natural flavors, stevia, organic arabic gum, organic rice hull concentrate, and sodium citrate.

There’s also some added micronutrients: well over a day’s worth of Vitamins B5 and B6, 10 percent of your daily magnesium, and a small amount of calcium and sodium.

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Onnit Total Strength + Performance Benefits & Effectiveness

So what do all these ingredients do?

Those with the most clear cut benefits for a workout are the branched chain amino acids and the beta alanine, both of which have been linked to improved endurance.(2) The BCAAs are also associated with muscle protein synthesis — if you’re working out on an empty stomach, they may help you to retain muscle.(3)(4) (You still need to eat the right amount of calories and protein and do everything else you need to gain muscle, but the BCAAs may be a useful supplement.)

Glutamine is a popular addition to pre-workouts, but there’s no real evidence that it helps with muscle growth in healthy adults.

The ingredients in the Power Blend are mostly linked to hormone health, particularly the d-aspartic acid, which may briefly increase testosterone.(5) That said, the effect is temporary and will likely have no measurable effect. The velvet bean extract is associated with better production of adrenaline and testosterone, but studies have mostly made this connection for people with hormonal disorders or illnesses that affect normal hormonal function. The longjack is usually used as a fertility supplement, but it might be anti-estrogenic — thereby helping maintain an appropriate balance of testosterone and estrogen — and it could reduce cortisol and improve mood.(6) We don’t have great evidence for this in humans, though. The stinging nettle could help with inflammation.(7)

The real downside here is that these are proprietary blends, so it’s hard to know how effective the doses are.

Onnit Total Strength + Performance Review

The Onnit Support Blend’s ingredients are varied: the red clover extract could help with anxiety, though studies have only found this effect in menopausal women. The resveratrol might improve blood flow and heart health, and the luteolin is anti inflammatory and could be anti estrogenic. The black pepper extract is there to help the ingredients absorb effectively.

Onnit seems to be aiming for better testosterone and estrogen levels here, though it’s worth pointing out that some of these ingredients don’t have a ton of evidence supporting their effects. The main players, and those with the most evidence behind them, are the BCAAs, beta alanine, longjack, and luteolin.

Onnit Total Strength + Performance Price

At $51 for 30 servings, it’s $1.70 per two-scoop serving. That’s on the expensive side for a “preworkout”; most pre-workouts are between 80 cents and $1 per serving.

Onnit Total Strength + Performance Taste

This is the new and improved Strawberry Lemonade flavor, and Onnit founder Aubrey Marcus himself said that he did not like the old flavor, but he loves this one. I’ll say it’s pleasant: it tastes like strawberry and lemon, but it’s also quite earthy, almost like a sweetened greens powder. For a naturally sweetened supplement, it could be a lot worse. I was happy to drink it slowly instead of chugging it, which is pretty remarkable.

Onnit Total Strength + Performance Pros & Cons

Pros

Contains BCAAs
Contains beta alanine and anti-estrogenic compounds
No artificial ingredients

Cons

No caffeine
Proprietary blends
Expensive

The Takeaway

There’s a decent amount of evidence to suggest that the BCAAs and beta alanine will positively affect your endurance levels, and the longjack and luteolin could help keep your estrogen in check. That’s a decent cocktail.

A lot of the ingredients, like the resveratrol and the stinging nettle, are more closely linked to improving overall health than to boosting your workout, but that might appeal to you. Some, like the red clover extract, have very little evidence supporting them.

For a stimulant-free pre-workout, I would have liked more BCAAs (there are under 4 grams in this product) and perhaps some citrulline to add to the endurance effects. Otherwise Onnit Total Strength + Performance a fine supplement that should help you work out harder.

References

1. Kreipke VC, et al. Impact of Four Weeks of a Multi-Ingredient Performance Supplement on Muscular Strength, Body Composition, and Anabolic Hormones in Resistance-Trained Young Men. J Strength Cond Res. 2015 Dec;29(12):3453-65.
2. Stout J, et al. Effects of beta-alanine supplementation on the onset of neuromuscular fatigue and ventilatory threshold in women. Amino Acids. 2007;32(3):381-6.
3. Zheng L, et al. Effects of Supplementation of Branched-Chain Amino Acids to Reduced-Protein Diet on Skeletal Muscle Protein Synthesis and Degradation in the Fed and Fasted States in a Piglet Model. Nutrients. 2016 Dec 28;9(1).
4. Matthews DE. Observations of branched-chain amino acid administration in humans. J Nutr. 2005 Jun;135(6 Suppl):1580S-4S.
5. D’Aniello , et al. Occurrence of D-aspartic acid and N-methyl-D-aspartic acid in rat neuroendocrine tissues and their role in the modulation of luteinizing hormone and growth hormone release. FASEB J. 2000 Apr;14(5):699-714.
6. Teh CH, et al. Comparative X-ray and conformational analysis of a new crystal of 13α,21-dihydroeurycomanone with eurycomanone from Eurycoma longifolia and their anti-estrogenic activity using the uterotrophic assay. Planta Med. 2011 Jan;77(2):128-32.
7. Teucher T, et al. [Cytokine secretion in whole blood of healthy subjects following oral administration of Urtica dioica L. plant extract]. Arzneimittelforschung. 1996 Sep;46(9):906-10.