Renue By Science NR Review: What's in It and How It Stacks Up

Written by the Nuvirox Research Team

Short answer: Renue By Science offers a legitimate ingredient — nicotinamide riboside — across several formats, with third-party testing as a real quality signal, but no format has clinical trial data of its own, and the marketing claims outrun what any of the specific products have been shown to do. This is a common and important distinction in the supplement world: the underlying molecule (NR) has a real, published evidence base, but a specific brand's specific capsule has almost never been tested directly. What you're buying is a bet that the manufacturer's version of NR performs like the NR used in academic trials — which depends heavily on form, purity, and dose matching.

What does Renue By Science actually sell?

Three different NR products, each with a different pitch. The standard capsule delivers 1,000 mg of nicotinamide riboside per serving in an enteric (acid-resistant) coating, intended to protect the compound from breakdown by stomach acid and gut bacteria before absorption. A separate liposomal capsule delivers 300 mg of NR wrapped in a lipid layer, marketed as a bioavailability upgrade. And a sublingual powder delivers roughly 1,282 mg per two-scoop serving, intended to be held under the tongue rather than swallowed.

All three list Nicotinamide Riboside Chloride (NRC) — the same chemical salt form used in most of the published human NR trials, and the same one used in our own NAD+ Restore formulation — as the active ingredient. That's a meaningfully better starting point than brands using an unspecified or unusual NR salt, since chloride is the form the research has actually tested.

Does the enteric coating or liposomal delivery actually improve absorption?

Here's where the marketing gets ahead of the evidence. Enteric coating is a real pharmaceutical technique used to protect acid-sensitive compounds, but there's no published human trial specifically testing whether an enteric-coated NR capsule raises blood NAD+ better than a standard capsule. Liposomal delivery has a similar problem: the concept is sound in principle — a lipid shell can improve absorption for some compounds — but independent testing of liposomal NAD+-related products has repeatedly found formulation and stability issues across the supplement category, and no controlled human trial has isolated liposomal NR's effect on blood NAD+ specifically.

What we can say with more confidence: the underlying NR chloride ingredient, taken as a standard oral capsule, reliably raises blood NAD+ in controlled trials at doses from 100 mg to 1,000 mg per day, in a dose-dependent way (Conze et al., 2019). That's the evidence Renue By Science's marketing is implicitly leaning on — it's real, but it applies to NR chloride generally, not to their enteric or liposomal formats specifically.

How does the price and dose compare?

At roughly $0.72 per serving for the 300 mg liposomal capsule and $1.32 per serving for the 1,000 mg powder, Renue By Science sits in the mid-range for NR pricing — cheaper per milligram than some boutique liposomal brands, more expensive per milligram of actual NR than a plain high-dose capsule from a value brand. The 1,000 mg dose is notable: it's within the range shown to produce the largest measured NAD+ increase in the dose-response trial above (142% at 1,000 mg vs. 51% at 300 mg), though higher blood NAD+ hasn't been shown to translate into proportionally larger felt benefits.

What this review won't tell you (the honest limits)

We can't tell you whether Renue By Science's specific manufacturing process delivers NR that behaves identically to the NR used in the Conze et al. trial, because that head-to-head test doesn't exist for this brand. Third-party testing, which Renue By Science advertises (ISO 17025-accredited, NSF-certified manufacturing), verifies that the label matches what's in the capsule — it does not verify that the product raises NAD+ in your blood by any particular amount. Those are two different claims, and it's worth not conflating them when comparing NR brands.

What third-party testing actually verifies here

Renue By Science advertises ISO 17025-accredited testing and NSF-certified manufacturing, which is worth unpacking rather than taking as a blanket seal of approval. ISO 17025 accreditation applies to the testing laboratory's competence and methodology -- it means the lab doing the analysis follows recognized standards for accurate measurement. NSF certification of the manufacturing facility means the plant follows Good Manufacturing Practices and is subject to periodic audits. Together, these are genuine, verifiable quality signals that a meaningful share of supplement brands skip entirely. But neither certification tests whether the finished product raises blood NAD+ in a human being by any particular amount -- that's a different question, answered only by a clinical trial, which doesn't exist for this specific product.

It's a useful distinction to carry into evaluating any supplement brand, not just this one: 'the label matches what's in the bottle and the facility is clean' and 'this specific product works the way the underlying ingredient does in trials' are two separate claims, and marketing copy tends to blur them together.

Frequently asked questions

Is Renue By Science's NR the same molecule used in clinical trials?
The active ingredient — nicotinamide riboside chloride — is the same salt form used in most published NR trials. The specific formulation (enteric coating, liposomes) has not been independently tested, so absorption performance versus a standard capsule isn't established.

Is liposomal NR worth the extra cost?
There's no controlled human trial isolating liposomal NR's effect on blood NAD+, so the premium is currently a bet on a plausible-sounding delivery mechanism rather than demonstrated superior absorption.

Is 1,000 mg of NR safe?
The dose-response trial that established NR's safety profile tested up to 1,000 mg/day for 8 weeks without excess adverse events versus placebo (Conze et al., 2019), so the dose itself sits within studied territory — though that trial used a different manufacturer's product.

How does this compare to other NR brands?
See our reviews of Double Wood NR malate and Thorne ResveraCel for how the ingredient sourcing and dosing compares across brands.

The bottom line

Renue By Science's NR products use a well-studied active ingredient at doses within the tested range, with reasonable third-party quality verification — but none of their specific formulations (enteric, liposomal, or powder) have their own clinical trial data, and the delivery-format claims are ahead of the evidence. If you want a fuller breakdown of what to look for across NR brands generally, our buyer's guide to NR supplements covers the criteria that actually matter, and our own formulation, NAD+ Restore, uses the same chloride salt at a studied dose.

References

1. Conze D, Brenner C, Kruger CL. Safety and metabolism of long-term administration of NIAGEN (nicotinamide riboside chloride) in a randomized, double-blind, placebo-controlled clinical trial of healthy overweight adults. Sci Rep. 2019;9(1):9772. DOI: 10.1038/s41598-019-46120-z.
2. Martens CR, Denman BA, Mazzo MR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults. Nat Commun. 2018;9(1):1286. DOI: 10.1038/s41467-018-03421-7.

*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. This article is for informational purposes only and is not a substitute for professional medical advice.