Nitric Boost review: ingredients, price, side effects and our verdict

What is Nitric Boost?

Nitric Boost, labeled on the jar as Nitric Boost Ultra, is a powdered drink mix sold through ClickBank and marketed to men who want to support sexual performance, blood flow and energy. Each jar holds 30 servings, and the directions are one scoop a day mixed with water, a smoothie or tea. The sales page says it is made in the USA in a GMP-certified facility, and describes it as vegan, dairy-free and non-GMO.

The formula lists eight ingredients: beet root powder, L-arginine, L-citrulline DL-malate, niacin (vitamin B3), horny goat weed, ginkgo biloba powder, dong quai and D-aspartic acid. What it does not show is any amount. We checked the sales page, the affiliate page and its product images, and the ClickBank order page, and found no Supplement Facts panel and no scoop size. The FAQ refers to a “proprietary blend.” So we cannot tell how much of any ingredient you would be getting.

How Nitric Boost claims to work

The sales page centers on nitric oxide, a signaling molecule that relaxes blood vessel walls and is part of the normal biology of an erection. It says the formula supplies nitrates that convert to nitric oxide, amino acids that help maintain nitric oxide levels, and antioxidants that support nitric oxide synthase. It also features a news-style section claiming scientists discovered that erectile problems are caused not by poor blood flow but by low cGMP, a “manhood molecule,” and that the product helps protect cGMP.

The basic biology is real: nitric oxide triggers cGMP production, and prescription PDE5 inhibitors work by slowing cGMP breakdown. But the framing is misleading. Reduced blood flow and nitric oxide signaling are central to erectile function, not an outdated idea, and nothing on the page shows that this powder raises cGMP in people. The page also includes glowing customer quotes and notes in its fine print that a named narrator is a fictionalized character, which does not inspire confidence.

What the ingredients actually do

L-arginine and L-citrulline

L-arginine is the amino acid the body uses to make nitric oxide. A 2019 meta-analysis of 10 randomized trials in 540 men with mild to moderate erectile dysfunction found that arginine at 1,500 to 5,000 mg a day improved erectile function compared with placebo, though doses and study designs varied (Rhim et al., 2019). That is gram-level dosing. Read more on our L-arginine page.

L-citrulline is converted to arginine in the kidneys and raises blood arginine more effectively than arginine itself in a pharmacology study (Schwedhelm et al., 2008). In a small single-blind study, 1.5 grams a day improved erection hardness scores in men with mild erectile dysfunction (Cormio et al., 2011). Citrulline malate is a salt form that is only partly citrulline. See our L-citrulline page.

These are the two most promising ingredients in the formula, but their benefit depends on dose. Without amounts, there is no way to know whether a scoop delivers anything close to the 1.5 to 5 grams used in trials.

Beet root and niacin

Beet root supplies dietary nitrate. A meta-analysis of short-term trials found that inorganic nitrate and beetroot juice lowered systolic blood pressure by about 4 mmHg (Siervo et al., 2013). Those studies mostly used concentrated juice; beet root powder varies widely in nitrate content, and the label gives neither the amount nor the nitrate level. Niacin is a B vitamin that widens skin blood vessels and can cause flushing at higher doses, but it has not been shown to improve sexual function.

Horny goat weed, ginkgo, dong quai and D-aspartic acid

Horny goat weed contains icariin, which inhibits the PDE5 enzyme in laboratory tests (Dell’Agli et al., 2008), but good human trials are lacking. Ginkgo is well studied for other uses, and NCCIH notes it may increase bleeding risk with anticoagulants such as warfarin (NCCIH). Dong quai is a traditional Chinese herb mostly used in women’s health; it has no clinical evidence for male sexual function and has been reported to potentiate warfarin (Page and Lawrence, 1999). D-aspartic acid is sold as a testosterone booster, but a systematic review found human results inconsistent (Roshanzamir and Safavi, 2017), and a 2024 review of testosterone boosters found most fail to raise testosterone (Morgado et al., 2024).

A 2023 analysis of sexual-health supplements sold in Italy found that most were blends of many substances, often at negligible doses, and that 80% matched a profile of no expected efficacy (Petre et al., 2023). With no amounts disclosed, Nitric Boost cannot be checked against that standard.

Who it may suit, and who should skip it

Nitric Boost may appeal to healthy men who prefer a drink mix and are willing to try a nitric oxide blend without knowing the doses. Men who want to use an evidence-based approach would do better with a single-ingredient L-citrulline or L-arginine product with a clear dose, chosen with their doctor. Erectile difficulties can be an early sign of heart disease, diabetes or hormone problems, so they are worth discussing with a clinician rather than self-treating. Our topic page on low stamina and libido after 40 covers lifestyle factors and when to get checked.

It also helps to keep the basics in view. Regular aerobic exercise, not smoking, limiting alcohol, sleeping enough and managing weight, blood pressure and blood sugar all support the same blood vessel health that nitric oxide supplements target, and they carry no interaction risks. A nitrate-rich diet with leafy greens and beets is a food-first way to get the same compounds found in beet root powder.

Several ingredients act on blood vessels and blood clotting. Skip this product, or talk to your doctor first, if you take nitrates for chest pain (such as nitroglycerin), prescription erectile drugs, blood pressure medicines, blood thinners or antiplatelet drugs, or diabetes medicines; if you have heart disease or have had a heart attack (a trial of high-dose L-arginine after heart attack was stopped early because of more deaths in the arginine group); if you have low blood pressure, liver disease or a bleeding disorder; or if you have surgery scheduled. It is not intended for women who are pregnant or breastfeeding.

Price, guarantee and where to buy

At the time of our review, the official site listed one jar at $69 plus shipping, three jars at $177 ($59 each) and six jars at $294 ($49 each), with free US shipping and two digital bonus guides on the larger kits. The brand describes it as a one-time payment with no subscription. Orders are covered by a 60-day money-back guarantee; the refund policy says you can return jars, even empty, for a full refund. Buy only from the official site, where ClickBank handles the order.

Our verdict

Nitric Boost is built around a sensible idea, and two of its ingredients, L-arginine and L-citrulline, have modest human evidence for mild erectile dysfunction at gram-level doses. The problem is that the brand discloses no amounts at all, so there is no way to know whether a scoop comes close to studied doses. The sales copy overstates the science, several ingredients carry interaction risks with heart and blood-thinning drugs, and at $49 to $69 per jar it costs more than a plain, clearly dosed citrulline powder. We rate it 2.2 out of 5.