Also known as: Seven plant blend, S7 nitric oxide blend, Low-dose botanical blend
Branded IngredientsEmerging evidence
A blend of seven plant extracts at a very small total dose, claimed to raise the body's own nitric oxide production substantially. The headline percentage is the entire selling point and deserves scrutiny.
Typical dose
50.0–50.0 mg per day
Before training
What it is
S7 is a patented blend of seven plant extracts: green coffee bean, green tea, turmeric, tart cherry, blueberry, broccoli and kale.
The total dose is 50 mg, which is remarkably small for a blend of seven botanicals. That works out to a few milligrams of each, far below the doses used in the research on any of them individually.
That is the central thing to understand. The proposition is not that these ingredients work at those doses in the usual way, but that the combination triggers a signalling response disproportionate to the amount. Whether you find that plausible is the question.
How it works
The proposed mechanism is that the polyphenol blend increases the body's own production of nitric oxide, rather than supplying substrate the way citrulline or nitrate do.
This is described as a signalling or hormetic effect: a small stimulus prompting a disproportionate response, which is a recognised phenomenon in biology and not inherently implausible.
The difficulty is that the specific pathway is not well characterised, and there is no obvious reason why these seven in particular, at these amounts, would produce the effect claimed. The mechanism is asserted more than it is demonstrated.
What the evidence shows
The headline claim comes from a small trial reporting a substantial percentage increase in a nitric oxide marker following supplementation.
That figure requires context. A large percentage increase from a low baseline can be a small absolute change, and percentage increases in biomarkers are among the easiest numbers to present impressively.
More importantly, trials demonstrating that people taking S7 actually perform better are scarce. The research is small, producer-linked, and focused on a marker rather than an outcome. Set expectations accordingly: this is a biomarker claim, not a performance one.
Dosing
The dose is 50 mg, consistent across all products using it, taken before training.
It appears inside pre-workout formulas rather than being sold alone.
The practical guidance is comparative. If you want more nitric oxide, citrulline at 6 to 8 g and dietary nitrate at 6 to 8 mmol both have substantial independent evidence behind them. S7 at 50 mg is cheap to include and looks good on a label, and its presence should not be a reason to choose one product over another.
At a glance
Common forms
S7 (within pre-workout formulas)
Half-life / duration
Not well characterised; biomarker changes reported acutely
Timing
Before training
Competition status
Permitted — not on the WADA Prohibited List
Category
Branded Ingredients
Safety and side effects
At 50 mg total across seven plant extracts, S7 is unlikely to cause problems and no significant adverse effects have been reported.
The green coffee bean and green tea components contribute a negligible amount of caffeine at this dose.
Anyone sensitive to any of the seven plants should check the composition. Speak to your doctor before use if you take regular medication.
Who should avoid it
Check the composition if you are sensitive to any of the seven plants involved. Speak to your doctor before use if you take regular medication. Not established at supplemental doses in pregnancy or breastfeeding.
This entry is provided for information only. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Consult a qualified healthcare professional before use if you are pregnant, breastfeeding, taking medication or under medical supervision.
