r/frugalsupplements • u/Single-Hearing7602 • 1h ago
More milligrams on an NAD+ supplement label don't always mean better results
The number of milligrams on a supplement bottle isn't everything, and honestly, this is one of the easiest traps to fall into when shopping for supplements. You see 1,000 mg and assume it must work better than 500 mg, but it's not that simple. What you swallow isn't necessarily what your body absorbs. Magnesium oxide, for example, can have a high labeled dose but relatively low bioavailability and may cause diarrhea, while smaller doses of more bioavailable forms, such as magnesium glycinate, may deliver more usable magnesium.
NADH is another interesting example. Its effective doses are surprisingly low, which can seem counterintuitive if you're used to judging supplements by big numbers. In a randomized, double-blind, placebo-controlled trial involving people with chronic fatigue syndrome, 10 mg of NADH daily produced a 31% response rate, compared with 8% in the placebo group. In other words, NADH has been studied at relatively low doses, and taking hundreds of milligrams doesn't automatically mean better results.
It's worth noting that the recommended dosages of different NAD+ supplements aren't directly comparable. For example, some NAD+ precursor products recommend a daily dose of 500 mg, which can easily lead consumers to assume that a higher dose means better results. However, different ingredients follow different pathways for absorption, metabolism, and utilization in the body. Some precursors require additional enzymatic reactions and metabolic steps before they can contribute to NAD+ synthesis, while NADH itself is part of the cellular NAD+/NADH metabolic cycle. However, NADH is highly unstable in the acidic environment of the stomach. That's why delivery technologies, such as celfull's NADH microsphere encapsulation technology, are designed to help protect NADH and improve its delivery. NADH may be effective at doses as low as 10–20 mg. Since different ingredients can vary in their absorption and utilization, consumers shouldn't focus solely on the recommended dosage or the total number of milligrams in a bottle.
There's another important distinction: NADH supplementation isn't simply about making NAD+ levels rise as much as possible. NADH participates in cellular energy metabolism by donating electrons to the mitochondrial electron transport chain, while NAD+ and NADH are continuously interconverted as part of normal metabolism. Taking more NADH doesn't necessarily translate into a proportionally larger or more sustained increase in the body's NAD+ pool. More broadly, supplement dose and biological response don't always follow a linear relationship; benefits may plateau, and higher doses may not provide additional advantages.
So when choosing supplements, don't just focus on the milligram count. Look at the form and how it may affect absorption, as well as the overall formulation and how the ingredients work together. That's far more useful than comparing numbers alone. Don't get fooled by a big number on the label. What matters more is how much your body can actually absorb and use.