Stem Cell Renew, Line by Line: The Doses, the Price, and What the Label Leaves Out

A serving is 2 capsules. A bottle holds 60 capsules, and the label counts that as 30 servings. At one serving a day, one bottle lasts a month.

Here are the doses on record. CoQ10 at 100 mg per serving. Polygonum cuspidatum root extract at 100 mg. BioVin® full spectrum grape extract at 100 mg. Ginkgo biloba leaf powder at 120 mg. Organic goji berry at 150 mg. L-theanine at 100 mg. Vitamin D at 50 mcg, which is 2000 iu per serving. Vitamin B6 at 1.7 mg, and vitamin B12 at 2.4 mcg.

The name says stem cells. The bottle holds none. The description on record states plainly that the product contains no actual stem cells; what it holds is a blend of vitamins and botanical antioxidants. The marketing sells it as boosting the body's natural supply of stem cells, with promises of sharper mental focus, slowed signs of aging, and restored youthful energy.

Here is the plain read. Your repair genes did not die; they ran out of fuel, a fuel called NAD+, and studies find older brains and muscles tend to have less of it even though blood levels hold steady with age. The nine Stem Cell Renew doses on record are CoQ10, Polygonum cuspidatum, BioVin® grape extract, ginkgo, goji, L-theanine, vitamin D, B6 and B12, and the description on record calls the blend vitamins and botanical antioxidants.

The mechanism is one breath. Your repair genes did not die; they ran out of fuel. Sirtuins, the repair genes' workers, are NAD-dependent enzymes, meaning NAD+ is a required substrate for them to work. In a human imaging study, older adults had less NAD+ in the brain than younger adults. In a cross-sectional study, older adults had lower NAD+ in skeletal muscle, and the lowest levels sat in the older adults who were physically impaired. Across seven human cohorts, blood NAD+ stayed stable with age. So the drain shows up where you feel it, not in a routine blood number.

Then there is the helper. In cell studies, quercetin inhibited CD38, and inhibiting CD38 raised the NAD+ inside cells. And in old mice, raising NAD+ restored mitochondrial function to that of a young mouse; the authors call the age-related decline apparently reversible. That last one is an animal finding, and the page will say so every time. It points the same direction as the human studies on record, which found less NAD+ in older brains and muscles.

• Vivacelle (shares an owner with this site), first place. The page lists the fuel at 500 mg of NAD+ per serving and the helper at 250 mg of quercetin. The 3-month pack works out to $1.30 per serving. The 180-day guarantee counts from the day of delivery, and there is no subscription.
• Stem Cell Renew, second place on this list. Its label lists doses on record from 150 mg of goji berry to 2.4 mcg of B12. The guarantee is 180 days as worded, and the 2-month pack runs $1.97 per serving. But the description on record lists its blend as vitamins and botanical antioxidants. The Vivacelle (shares an owner with this site) page lists NAD+ at 500 mg and quercetin at 250 mg per serving.
• Longevity Activator, third place. It matches the others on paper with a 180-day guarantee and free U.S. shipping. But its page does not state its serving size, its servings per container, or its ingredient amounts. At $147.00 for the 3-month supply, you are buying without those numbers, and they are not stated anywhere in the readable text of its product page.

There is also a subscription: Vitality Now offers Subscribe & Save 20%, every 2 months, at $94.40 as the subscription price. If you would rather keep your card clear of renewals, the one-time purchase is listed at $118.00. The product comes in multiple package sizes, including multi-bottle packs.

Put Vivacelle beside it and the arithmetic shifts. Vivacelle's 3-month supply is $117.00 for 90 servings, which works out to $1.30 per serving. Its 2-month supply is $98.00 for 60 servings, $1.63 per serving. Zenith Labs' Longevity Activator lists a 3-month supply at $147.00, but its page does not state servings per container, so its per-serving cost cannot be worked out.

One thing worth seeing with your own eyes: the guarantee line on the Stem Cell Renew page sits inside a banner that also runs a Halloween flash sale with $30 off orders over $150, as the page words it. The 180 days is real as worded, but that is the page your eye has to read past.

Vivacelle's terms run cleaner. Every order is covered by a 180-day money-back guarantee counted from the day the order is delivered. Shipping is free on every order, it ships within 1 to 2 business days, and delivery usually takes 4 to 7 business days after that. It is a one-time purchase with no subscription.

Zenith Labs' Longevity Activator carries a 180-day money-back guarantee and free U.S. shipping on all orders. On guarantee length alone, the three tie, each at 180 days in its own page's wording.

One human study lines up with the instinct to keep moving: the lowest muscle NAD+ was found in older adults who were physically impaired. Keep the morning walk. What the capsule is for is the fuel: NAD+ is the substrate the sirtuins need to work, and the Vivacelle page lists that fuel at a stated dose, 500 mg per serving. The walk works the muscle. The capsule fills the tank. They are not competing for the same job.