The nitric oxide booster built from organic watermelon and spinach — not synthetic powder.
Nitric oxide is the signalling molecule that tells your blood vessels to relax and widen. Your body makes less of it every decade after your twenties. The 20 FLOW is a two-capsule daily supplement built to support that pathway using L-Citrulline fermented from real organic produce, and it is formulated for men and women alike.
Claim Your Free Bottle →First bottle free — you pay $4.95 shipping. Your subscription then bills $22.47/month and ships a new bottle each month until you cancel. Cancel anytime.
What it is
The 20 FLOW is a dietary supplement sold as a nitric oxide booster. Each bottle holds 60 gelatin capsules, which at the labelled serving of two capsules per day works out to a 30-day supply. Every serving delivers 850 mg of a proprietary blend built around L-Citrulline.
What separates it from the crowded nitric oxide shelf is the sourcing. Most citrulline and arginine on the market is produced industrially: corn sugar is fermented in large tanks with selected bacteria to yield arginine, which is then enzymatically converted to citrulline. The 20 FLOW instead ferments organic watermelon rind and organic spinach, then adds vitamin C from organic acerola cherry and maritime pine bark extract. The 20 flow supplement is positioned as the first nitric oxide product built from organic fruit and vegetable sources rather than bulk synthetic powder.
The brand behind it is The 20, LLC, founded by Susan Bratton, an intimacy educator who has been publishing in this space since 2006. FLOW was the company’s first product and sits alongside a small range of related formulations. The 20 flow nitric oxide booster is explicitly formulated for both men and women, which is unusual in a category that overwhelmingly markets to men.
It is worth being precise about what the product claims. It is a supplement, not a medication. The label carries the standard FDA statement that these claims have not been evaluated and that the product is not intended to diagnose, treat, cure or prevent any disease. Everything on this page is written to that standard.
The mechanism
Nitric oxide relaxes the smooth muscle lining your blood vessels. When those vessels relax, they widen, and blood moves more freely to every tissue that depends on it. Production of this molecule declines steadily with age in both men and women.
Charts published by The 20, citing American Heart Association Journals. Reproduced here as manufacturer material.
Your body reaches nitric oxide by more than one road. The first runs through the amino acid L-Citrulline, which the kidneys convert to L-arginine, which is then used by nitric oxide synthase. The second runs through dietary nitrates from leafy greens, reduced through nitrite to nitric oxide. The 20 FLOW supplies inputs for both: citrulline from watermelon rind, nitrates from spinach.
Supplementing citrulline rather than arginine directly is a deliberate choice. Research into dose-ranging effects found citrulline the more effective route to raising nitric oxide synthesis, largely because a substantial share of oral arginine is metabolised before it reaches circulation.
Circulation is systemic, so the pathway is relevant to cardiovascular function, cognition and exercise recovery. It is also the mechanism behind the product’s intimacy positioning: genital tissue is erectile tissue, and engorgement depends on blood flow.
The manufacturer makes the point that this applies to women as well as men — the clitoral structure and urethral sponge are composed of the same erectile tissue as the male corpus cavernosum, arranged differently. That is why the product is marketed to both.
The sourcing argument
This comparison is the brand’s central claim, so it is worth stating it plainly and letting you weigh it.
Most L-Citrulline in the global supplement supply chain is manufactured, not harvested. The typical route is fermenting corn sugar into arginine, then converting that arginine to citrulline with an enzyme reaction. Much of that production is concentrated in China.
The manufacturer’s objection is not to laboratory processes as such. It is to what rides along with agricultural feedstock — specifically, pesticide residue on the corn that becomes the raw material for bulk amino acid powders.
Their alternative is to contract a family-run US producer to ferment certified organic watermelon rind and organic spinach specifically for this formulation, then combine that with acerola cherry vitamin C and maritime pine bark.
Our read: this is a sourcing and purity argument, not a potency argument. The manufacturer is not claiming food-derived citrulline works through a different mechanism than synthetic citrulline. If organic sourcing and residue avoidance matter to you, that is the case for paying more than commodity powder costs. If they do not, cheaper citrulline exists.
What’s inside
No proprietary-blend guessing games on our end — here is the panel from the bottle.
* 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.
L-Citrulline takes its name from Citrullus vulgaris, the watermelon, from which it was first isolated. The manufacturer ferments organic watermelon rind rather than buying bulk synthetic citrulline. Citrulline is the precursor the body converts to arginine and then to nitric oxide, and research has found it a more effective route to nitric oxide synthesis than supplementing arginine directly.
Leafy greens are one of the richest dietary sources of nitrates, which the body reduces along the nitrate–nitrite–nitric oxide pathway. Fermenting organic spinach gives the formula a second, independent route into nitric oxide production rather than relying on the citrulline pathway alone.
Acerola is among the densest natural sources of vitamin C, well above oranges or strawberries by weight. It is included here specifically to support absorption of the citrulline rather than as a standalone antioxidant claim.
Pine bark extract from the maritime pine is a long-standing ingredient in circulatory formulations. In this blend it is included for its circulatory effects and to support a more sustained release of nitric oxide production rather than a short spike.
The full printed label, front and back, including the recommendations and warning panels.
Gluten-free, non-GMO, lactose-free and sugar-free. No soy, no magnesium stearate, no stearic acid, no titanium dioxide, no methacrylic copolymers, no methyl or propyl parabens, no MSG. The only excipient is a small amount of organic rice flour used as a flow agent on the production line.
Directions
Two size-0 capsules is one full 850 mg serving. Morning or evening both work; the manufacturer suggests keeping the bottle beside your multivitamin so it becomes routine. Do not exceed the daily dosage on the label.
Nitric oxide support is a cumulative pathway, not an acute one. Consistency over weeks matters more than timing on any single day.
The manufacturer suggests an additional two capsules roughly 15 minutes before intimacy, or before using a vacuum device. If you use this option regularly you will need more than one bottle per month.
The manufacturer’s own guidance is that circulation responds to exercise, hydration, stress management, not smoking, avoiding fried food and cutting added sugar. A supplement supports that; it does not substitute for it.
Formulation notes
These are design intentions and formulation facts, not promised outcomes. Supplements are not medications, and no result is guaranteed for any individual.
Who makes it
Not affiliated with this site
The 20 FLOW is produced by The 20, LLC, registered at 30 N Gould St Ste 2988, Sheridan, WY 82801, with fulfilment handled through Aurora, Colorado. The company was founded by Susan Bratton, an intimacy and sexual-health educator who has been publishing to the same audience since 2006. FLOW was the brand’s first product.
The brand name is a reference to the Pareto principle — the observation that roughly 80% of results tend to come from 20% of inputs. The company’s stated intent is to isolate the ingredients that actually carry the effect and build formulations around those rather than long, thin ingredient lists.
Manufacturing is contracted to a family-owned US producer operating under GMP certification with independent laboratory testing. Bottles are recyclable HDPE.
To be explicit: this website is not operated by, affiliated with, or endorsed by The 20, LLC or Susan Bratton. Her photograph and the manufacturing photograph below are published by the manufacturer and are reproduced here to identify the company behind the product.
Manufacturer-published images, reproduced for identification. Individuals shown are not endorsing this website.
What buyers report
We do not invent testimonials. The accounts below are drawn from feedback the manufacturer has published publicly, reduced to their non-explicit substance and attributed by first name only. The portraits are illustrative stock images, not photographs of the people quoted.
Reported taking two capsules each morning for around six weeks before also trying the suggested pre-intimacy serving, and described the change in intimate experience as noticeable and worthwhile.
Described an improvement in spontaneous physical response and generally feeling more like his younger self after using the product.
Across the manufacturer’s published video testimonials, the recurring themes are noticing something within the first several days, valuing the ingredient sourcing, and describing a positive effect on intimacy within a relationship.
The offer
One offer, stated in full. Read the terms box before you click — this is a subscription, not a one-time purchase.
Free bottle + subscribe & save 25%
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Prices verified against the manufacturer’s published offer page. Vendors change pricing without notice — always confirm the figures on the checkout page before completing your order.
Buying options
Most pages covering this product show you one link and stop. The 20 FLOW is genuinely available through more than one channel, and the right one depends on whether you want a subscription. Here is the honest comparison.
| Free-bottle subscription | Vendor single bottle | Amazon | |
|---|---|---|---|
| First-order cost | $0 + $4.95 shipping | $29.95 list | Around $24.99 one-time |
| Ongoing cost | $22.47 per month | None — buy when you want | Around $21.24 on Subscribe & Save |
| Recurring billing | Yes — monthly until cancelled | No | Optional |
| Return policy | 364 days, unused portion | 364 days, unused portion | Non-returnable (food safety) |
| Retailer of record | ClickBank | ClickBank | Amazon |
| Cheapest way to try it | Yes — $4.95 to test a full bottle | No | No |
| Supports this site | Yes | Yes | No |
You want the lowest-risk way to test the product. $4.95 gets you a full 30-day bottle, and the 364-day return policy covers you well beyond that. You are comfortable setting a reminder to cancel if you decide it is not for you.
You dislike subscription enrolments on principle and would rather pay for a bottle outright. The trade-off is real: Amazon lists the item as non-returnable for food-safety reasons, so you give up the manufacturer’s long return window in exchange for avoiding recurring billing.
Third-party marketplace pricing changes frequently and is shown here for orientation only. Verify current figures at the source before ordering.
Guarantee
The manufacturer’s stated policy is that if you are not completely satisfied you may return the unused portion within 364 days of purchase and receive a full refund of the purchase price, less shipping and handling. That is an unusually long window for a supplement.
Three details worth knowing before you rely on it:
First bottle free — you pay $4.95 shipping. Your subscription then bills $22.47/month and ships a new bottle each month until you cancel. Cancel anytime.
Category comparison
Compared with the three routes people actually consider when they start looking at nitric oxide support.
| The 20 FLOW | Bulk citrulline powder | Beetroot / nitrate shots | Generic NO capsules | |
|---|---|---|---|---|
| Citrulline source | Fermented organic watermelon rind | Typically fermented corn, synthetic conversion | None — nitrate pathway only | Usually synthetic L-arginine or L-citrulline |
| Second NO pathway | Yes — organic spinach nitrates | No | Yes — nitrates | Varies |
| Absorption support | Acerola cherry vitamin C | None | Varies | Varies |
| Cost per month | $22.47 on subscription | Often under $10 | $30–$90 | $15–$40 |
| Format | 2 capsules daily | Powder, needs measuring | Liquid shot | Capsules |
| Marketed to women too | Yes, explicitly | Neutral | Neutral | Usually men only |
| Vegan-friendly | No — gelatin capsule | Usually yes | Usually yes | Varies |
| Return window | 364 days, unused portion | Retailer-dependent | Retailer-dependent | Retailer-dependent |
The honest summary: if cost per milligram is your only criterion, bulk powder wins and it is not close. The 20 FLOW is priced for buyers who care about organic food sourcing, want a fixed two-capsule dose with no measuring, and value the long return window. Decide which of those you are.
Ordering
Our button hands you off to the manufacturer’s order page, processed by ClickBank on an SSL-encrypted connection. We never see or store your payment details.
The bottle itself is free on the first order. Completing checkout starts the monthly subscription at $22.47.
Keep it. That order number is what you need to cancel, track, or request a refund. If it does not appear, check your spam and promotions folders before contacting support.
This is a supplement, not a download. Your bottle ships from the fulfilment centre in Aurora, Colorado. Domestic delivery generally takes a few business days. International orders take longer and may attract import duties, taxes and charges that are the buyer’s responsibility.
If you claimed the free bottle to try the product, put a calendar note a few days before your next billing date. Cancelling is straightforward, but only if you remember to do it.
Questions
The 20 FLOW is a dietary supplement marketed as a nitric oxide booster. Each two-capsule serving delivers an 850 mg proprietary blend of L-Citrulline sourced from fermented organic watermelon rind and fermented organic spinach, plus organic acerola cherry for vitamin C and maritime pine bark extract. It is sold by The 20, LLC, a brand founded by intimacy educator Susan Bratton, and is formulated for both men and women.
Through the subscription offer, your first bottle is free and you pay $4.95 for shipping. The subscription then bills $22.47 per month and ships a fresh 60-capsule bottle each month until you cancel. That monthly rate is 25% off the $29.95 single-bottle list price. You can cancel at any time. Always confirm the exact figures on the checkout page before you complete your order, since vendors update pricing without notice.
Yes. The free-bottle offer is a subscription enrolment, not a one-off purchase. After the first bottle you are billed $22.47 monthly. ClickBank is the retailer of record, so you can cancel from your ClickBank order-lookup page at clkbank.com using your order number and the email address you ordered with, or by contacting ClickBank support directly. Cancel before your next billing date to avoid the following month’s charge.
The manufacturer states that if you are not satisfied you may return the unused portion within 364 days of purchase for a full refund of the purchase price, less shipping and handling. Returns require an RMA number and are sent to EyeFive, Inc., c/o The20, LLC, 19655 E 35th Dr #100, Aurora, CO 80011. Note that ClickBank also operates its own standard refund window as the retailer, which is shorter; see our refund policy page for how the two interact.
The label directs two capsules daily, which is the full 850 mg serving. Some competing pages incorrectly state one capsule per day — that is half the labelled dose. The vendor additionally suggests an optional extra two capsules roughly 15 minutes before intimacy or before using a vacuum device. If you take those extra servings you will use more than one bottle per month.
Both. The manufacturer positions it for everyone across the gender spectrum, on the basis that nitric oxide supports cardiovascular circulation regardless of sex, and that erectile tissue exists in both male and female anatomy. Nitric oxide output declines with age in both men and women, which is the age-related pattern the product is built around.
It is a physical product. You receive a 60-capsule HDPE bottle shipped to your address from the fulfilment centre in Aurora, Colorado. Nothing is delivered instantly and there is no download. Domestic delivery typically takes several business days after the order confirmation email; international orders take longer and may attract import duties.
The proprietary blend is L-Citrulline from fermented organic watermelon rind, fermented organic spinach, organic acerola cherry and pine bark extract (pinus pinaster), totalling 850 mg per serving. Other ingredients are gelatin and organic white rice flour. The formula is gluten-free, non-GMO, lactose-free and sugar-free, and contains no magnesium stearate. Because the capsule shell is gelatin, it is not vegan or vegetarian.
The label restricts use to healthy adults 18 and over, and directs you not to exceed the daily dosage. Consult your healthcare provider before use if you are pregnant, nursing, trying to conceive, or have any medical concern. This matters most if you take blood pressure medication, nitrates, or erectile-dysfunction drugs, because compounds that support vasodilation can compound their effect. This is general information, not medical advice.
There is no guaranteed timeline and individual results vary. Nitric oxide precursors are generally taken consistently over weeks rather than as an acute dose, and most published feedback describes gradual change over several weeks of daily use. Anyone promising a fixed result by a fixed date is guessing. The long return window exists precisely because the manufacturer expects an extended trial period.
The 20 FLOW™ Free Bottle Offer
A 30-day supply of the organic nitric oxide booster, shipped to your door. You pay shipping only on the first bottle.
Claim Your Free Bottle →
First bottle free — you pay $4.95 shipping. Your subscription then bills $22.47/month and ships a new bottle each month until you cancel. Cancel anytime.
364-day return policy on unused product · Ships from Aurora, Colorado · ClickBank is the retailer of record
Results disclaimer. The 20 FLOW is a dietary supplement, not a medication. Statements on this page have not been evaluated by the Food and Drug Administration and the product is not intended to diagnose, treat, cure or prevent any disease. Individual results vary and no outcome is guaranteed. Nothing here is medical advice. Consult a qualified healthcare professional before starting any supplement, particularly if you are pregnant, nursing, trying to conceive, under 18, managing a medical condition, or taking medication — especially blood pressure medication, nitrates, or erectile-dysfunction drugs.
Affiliate disclosure. In accordance with FTC 16 CFR Part 255, we disclose that this is an independent affiliate website. We receive a commission on qualifying orders placed through links on this page, at no additional cost to you. We are not the manufacturer, not the retailer, and not the official store. Product facts published here are drawn from the manufacturer’s own materials and product label; we do not alter them to suit the commission.
Subscription disclosure. The free-bottle offer is a subscription enrolment. After the free first bottle and $4.95 shipping charge, the subscription bills $22.47 monthly and ships a bottle each month until cancelled. Cancel at any time through ClickBank.
Trademarks. The 20™, FLOW™ and The 20 FLOW™ are trademarks of The 20, LLC. CLICKBANK® is a registered trademark of Click Sales, Inc. All trademarks are the property of their respective owners and are used here for identification and descriptive purposes only. This site is not affiliated with, endorsed by, or operated by The 20, LLC, Susan Bratton, ClickBank, or Amazon.
