NMN is a direct precursor to NAD+, a coenzyme involved in over 500 cellular processes. By supporting healthy NAD+ levels, NMN supplementation may help maintain efficient cellular energy production, support healthy metabolic function, and provide the raw materials your cells need for everyday maintenance and repair processes. Most people take NMN to support how they feel day-to-day, particularly energy, focus, and recovery from exercise

Why do NAD+ levels decline?

Two reasons: you make less and use more. The enzymes that produce NAD+ become less efficient with age - by middle age, levels may drop by half. At the same time, an enzyme called CD38 increases with age and inflammation, consuming NAD+ faster than you can make it. NAD+ levels decline at about 1% per year, so by age 50, you may have half the NAD+ you did when you were younger. 

Lifestyle factors accelerate this decline: chronic stress, poor sleep, excess alcohol, overeating, and sedentary habits all increase NAD+ demand or reduce production. This is why supporting NAD+ levels becomes more important as we get older and face more of life's daily demands

How does NMN compare to other NAD+ support supplements?

NMN is one of several NAD+ precursors available. What sets it apart is its position in the NAD+ biosynthesis pathway: it's just one enzymatic step away from becoming NAD+. Other precursors like NR (nicotinamide riboside) and niacin take additional steps to convert. NMN also appears to be well-absorbed and efficiently utilized by cells. Many people find NMN works even better when paired with complementary ingredients like resveratrol (which activates NAD+-dependent enzymes) and quercetin (which helps protect NAD+ from degradation)

The recommended daily serving is one scoop (500 mg) twice daily, typically once in the morning and once in the early afternoon. If you're new to NMN, you may prefer to start with half a scoop twice daily for the first week before increasing to the full serving. Because NAD+ levels follow a natural circadian rhythm, earlier dosing is generally recommended.

NMN has a strong safety profile at standard doses. Some people experience mild, temporary effects when starting such as slight digestive changes or shifts in sleep patterns as their body adjusts. These typically resolve within a few days. For long-term use, no serious adverse effects have been reported even at higher doses. As with any supplement, consult your healthcare provider if you have specific concerns or are taking medications.

Look for three things: purity testing, third-party verification, and transparency. Renue By Science provides a Certificate of Analysis (COA) for every batch, showing 99%+ purity verified by independent labs. We also test for heavy metals, microbial contaminants, and identity confirmation. Be cautious of brands that don't publish COAs or make claims that seem too good to be true. If a company won't show you their testing, that's a red flag

NAD+ is essential for converting the food you eat into ATP, the energy currency your cells actually use. It's required for glycolysis, the citric acid cycle, and oxidative phosphorylation, the core processes of cellular energy production. When NAD+ levels are supported, these metabolic pathways can function efficiently. This is why many people notice improvements in sustained energy and reduced afternoon fatigue after consistent NMN use.

Store your NMN powder in a cool, dry place away from direct sunlight and heat sources. Our container is designed to protect against moisture and light degradation, so refrigeration isn't required. Avoid storing in humid environments like bathrooms. When stored properly, NMN powder maintains its potency throughout its shelf life

TMG (trimethylglycine) supports your body's methylation processes, which some people choose to supplement alongside NMN. While methylation concerns at standard NMN doses are minimal for most people eating a balanced diet, adding TMG provides extra support for this important biochemical pathway. If you're taking higher doses of NMN or want comprehensive support, TMG is an easy addition to your routine. We offer TMG as a standalone product for this reason.

Yes, resveratrol and NMN are highly complementary. Here's why: NMN provides the raw material (NAD+), while resveratrol activates sirtuins, the enzymes that actually use NAD+ to support cellular health. Think of NMN as the fuel and resveratrol as the ignition. Taking them together means you're not just building NAD+ levels; you're ensuring that NAD+ gets put to work. Our LIPO Resveratrol uses liposomal delivery for enhanced absorption, and many customers take it alongside their morning NMN.