Guide
Beetroot and Black Pepper: Does Piperine Change Anything?
Some beetroot pills add black pepper extract for absorption. Piperine's documented bioavailability boost is for curcumin, a different compound with a different absorption problem; no trial has tested it alongside beetroot's nitrate.
Some beetroot pills add black pepper extract (piperine) with an absorption claim attached — but we haven't found a trial testing piperine alongside beetroot or its dietary nitrate. Piperine's actual, well-documented bioavailability boost is for curcumin, a different compound absorbed through a different mechanism than nitrate.
Where the absorption claim comes from
Piperine's reputation as an absorption enhancer traces to curcumin, turmeric's main active compound. A 1998 human trial found that adding 20 mg of piperine to a 2 g dose of curcumin increased curcumin's bioavailability by 2,000% compared with curcumin alone, by slowing how the liver and gut process it (specifically, glucuronidation, a metabolic step that would otherwise clear curcumin from the body quickly). That's a real, measured effect — for curcumin.
Does that apply to beetroot's nitrate?
No trial has tested it. Dietary nitrate isn't absorbed and cleared the same way curcumin is — it's converted to nitrite by bacteria on the back of the tongue, then to nitric oxide in the gut and bloodstream, a pathway that doesn't depend on the liver enzyme piperine interferes with. Piperine's known mechanism doesn't give a documented reason to expect it changes nitrate absorption, and no study has measured whether it does. A "beetroot with black pepper" product is combining two ingredients with separate research, not one backed by a trial on the combination.
Beetroot's own research
Beetroot's research is almost entirely about dietary nitrate and physical performance on its own. A 2025 umbrella review of 15 meta-analyses found nitrate doses of 515-1,017 mg a day, from concentrated juice, produced a negligible-to-small effect on strength, endurance and lactate tolerance — see beetroot benefits: what the research does and doesn't show for the full picture. That research doesn't include piperine as a variable.
Our beetroot capsule
Electric Tiger Beetroot is 1300 mg of whole organic beetroot powder per two-capsule serving — one ingredient, no piperine or other additions — as low as $14.39 a bottle on subscription. See beetroot without fillers for what's on the label besides the capsule shell.
Questions people ask
Does black pepper help beetroot work better?
No trial has tested that question. The absorption boost people associate with piperine is documented for curcumin, not for beetroot's dietary nitrate, and the two compounds are processed by the body differently.
Why do some beetroot supplements include black pepper extract?
Likely a marketing borrow from curcumin research, where piperine's bioavailability effect is genuinely well documented. It appears without a beetroot-specific trial behind it.
Is it safe to take beetroot and black pepper together?
We haven't found a reason for concern in typical food or supplement amounts, but we also haven't found a trial testing the combination specifically, for safety or for effect.
Related reading: beetroot benefits: what the research does and doesn't show, beetroot without fillers, and how to choose a beetroot supplement.
Sources
- Influence of piperine on the pharmacokinetics of curcumin in animals and human volunteers A 1998 study found 2 g of curcumin taken alone barely showed up in human blood at all, but adding just 20 mg of piperine (from black pepper) increased how much curcumin reached the bloodstream by 2000%.
- Effects of Beetroot Juice on Physical Performance in Professional Athletes and Healthy Individuals: An Umbrella Review A 2025 review pooling 15 meta-analyses found beetroot juice produced mostly negligible-to-small improvements in strength, endurance and lactate tolerance, at nitrate doses of 515-1,017 mg a day — using concentrated juice, not a whole-food powder.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
