NR Longevity™ by Pure Encapsulations

NR Longevity is for adults interested in healthy aging who want to raise NAD+, a molecule every cell uses to turn food into energy and to run its repair enzymes, and whose levels decline with age. It tends to appeal to people in midlife and beyond who already have sleep, exercise and diet in reasonable order. If you want to measure the effect, NAD (NAD+) can be checked before starting and again after a couple of months. Set expectations honestly: nicotinamide riboside reliably raises NAD+, but whether that translates into feeling or aging better has not been shown in people.

The formula combines three ingredients. Nicotinamide riboside (NR), supplied as Niagen, is a form of vitamin B3 that cells convert to NAD+; human trials consistently show it raises blood NAD+ within weeks. Trans-resveratrol is a polyphenol found in grape skins, studied for its effects on sirtuins, enzymes that depend on NAD+. Broccoli sprout concentrate provides sulforaphane, which switches on the body's own antioxidant and detoxification enzymes. The pairing is logical on paper; trials of this combination are lacking.

Two capsules provide 300 mg of nicotinamide riboside chloride, 150 mg of trans-resveratrol and 200 mg of broccoli sprout concentrate standardized to contain 800 mcg of sulforaphane. The label directs 2 capsules, 1–2 times daily, with or between meals, or as directed by a health professional; the bottle holds 30 servings. Taking them with food is the gentler option if your stomach is sensitive. Unlike niacin, NR does not cause flushing.

Resveratrol has a mild effect on platelets, so if you take warfarin or other anticoagulant or antiplatelet medicines, check with your prescriber before starting, and tell your clinician you take it before any surgery. Resveratrol also has weak estrogen-like activity; people with hormone-sensitive conditions should ask their clinician first. NR is well tolerated, with nausea, bloating and headache the usual complaints. There are no safety data in pregnancy or nursing, so avoid it then.

Blood NAD+ rises within two to four weeks of daily use and holds while you keep taking it. Most people notice nothing dramatic, and that is the honest expectation. The main alternatives are NMN, another NAD+ precursor, and plain NR without the added polyphenols; there is no good evidence that one precursor outperforms the other in people. Choose this formula if you want resveratrol and sulforaphane in the same capsule.