Klean offers a lower-caffeine alternative with a disclosed nitrate target and NSF certification. That restraint is useful. The product also contains 7 g carbohydrate and does not include creatine, citrulline or beta-alanine, so buyers should judge it as a caffeinated beet drink—not a universal pre-workout benchmark.
Score breakdown
| Area | Finding | Score |
|---|---|---|
| Formulation | Disclosed nitrate and modest caffeine dose | 21 / 25 |
| Transparency | Complete active and nutrition panel | 19 / 20 |
| Laboratory verification | NSF Certified for Sport listing | 20 / 20 |
| Safety | Lower caffeine, amount clearly stated | 14 / 15 |
| Company reliability | Strong external-certification practice | 8 / 10 |
| Value | Premium for a deliberately narrow formula | 4 / 10 |
Formula and label
One scoop provides 5 g beet-root extract standardised to 300 mg nitrate, 75 mg caffeine, 150 mg vitamin C and 7 g carbohydrate. The nitrate disclosure is useful. Responses to nitrate and caffeine vary, and the product should not be compared as though it contains a full strength-and-power stack.
Laboratory and certification trail
Klean Athlete states the product is NSF Certified for Sport, and the NSF pre-workout directory lists it. This is a strong product-level signal, not proof that the formula is optimal for every training goal.
Company accountability
Klean publishes a full Supplement Facts panel and maintains a broad NSF-certified line. The score is based on the exact product evidence, not team partnerships.
Where this fits
A rational option when a smaller caffeine dose is deliberate. It is poor value if the user simply wants coffee or dietary nitrate and does not need the certification or convenience.
Limits and update trigger
No taste, tolerance or lot assay by ShreddedAF. People with medication or health considerations should seek individual professional advice.
Evidence register
Source rule: Manufacturer pages establish the current label and company claims. Independent directories establish only the certification, product, region and batches they actually list. Popularity, awards and affiliate economics add zero points.
Official product page
No retailer or affiliate relationship is active on this page. Price, formula, serving size and certification can differ by country and variant.
Check the manufacturer page ↗