Stact Longevity+ vs AG1
Stact Longevity+ vs AG1 Next Gen Original
Why Choose Longevity+Over AG1?
A muscle-centered longevity formula.
Daily nutrition built in.
AG1 is a greens-based daily-nutrition formula. Stact Longevity+ puts a defined muscle foundation at the center, then builds daily nutrition around it.
The differences at a glance
Eight differencesworth seeing.
Product facts compare one daily serving of Longevity+ with one serving of U.S. AG1 Next Gen Original powder, not AG1 Pro or bundled supplements.
| What matters | Longevity+ | AG1 Next Gen |
|---|---|---|
| Creatine monohydrate | 2,500 mg | Not listed |
| Essential amino acids | All 9 individually dosed; 2,000 mg leucine |
2 g protein; no separate EAA doses disclosed |
| Brain-focused additions | Citicoline + PS + L-theanine |
Not listed |
| Skin-focused additions | Hyaluronic acid + MSM |
Not listed |
| Healthy-aging additions | NR chloride + glutathione |
Not listed |
| Vitamin D3 | 19.5 mcg | Not listed |
| Magnesium | 150 mg | 30 mg |
| Cost per gram* | $0.19 | $0.20 |
Per daily serving. “Not listed” refers to published ingredient information reviewed; it is not a laboratory finding. *Cost per gram uses regular U.S. 30-serving subscription price ÷ (published serving mass × 30): $109 ÷ 570 g and $79 ÷ 390 g. Cost per gram measures formula mass supplied, not clinical effectiveness. Prices and formulas may change.
Muscle belongs at the centerof your longevity routine.
Stact Longevity+ combines creatine with a fully specified essential-amino-acid profile. It also includes deliberate choices for focus and skin-care priorities, with amounts visible.
01 / Build in your muscle foundation
| Muscle & recovery | Longevity+ | AG1 Next Gen |
|---|---|---|
| Creatine monohydrate | 2,500 mg | Not listed |
| Essential amino-acid profile | All 9; 4,250 mg across listed amounts | 2 g protein; no separately dosed EAA formula |
| L-leucine within that profile | 2,000 mg disclosed | No separate amount disclosed |
Creatine, leucine and all nine essential amino acids give Stact Longevity+ a defined muscle-support foundation. Food, training and total dietary protein still matter.
02 / Include ingredients selected for focus and skin
| Brain & skin choices | Longevity+ | AG1 Next Gen |
|---|---|---|
| Citicoline sodium | 225 mg | Not listed |
| Phosphatidylserine | 100 mg | Not listed |
| L-theanine | 100 mg | Not listed |
| Hyaluronic acid + MSM | 150 mg + 500 mg | Not listed |
These are formulation choices, not head-to-head clinical outcomes. Stact Longevity+ discloses each listed amount.
Know what you are getting.
Stact Longevity+ pairs familiar daily nutrients with specific additions for its healthy-aging formulation. The individual amounts are available on the label.
Daily formula
| What matters | Longevity+ | AG1 Next Gen |
|---|---|---|
| Magnesium | 150 mg | 30 mg |
| CoQ10 | 100 mg | 60 mg |
| Vitamin D3 | 19.5 mcg | Not listed |
| Iodine | 75 mcg | Not listed |
| Vitamin K2 (MK-7) | 100 mcg | 90 mcg |
| NR chloride | 150 mg | Not listed |
| Glutathione | 225 mg | Not listed |
Functional ingredients, individually disclosed
Stact Longevity+ specifies amounts for its creatine, nine EAAs, brain-focused additions, hyaluronic acid, NR and glutathione. AG1 discloses many nutrient doses, while listing its superfood/prebiotic complex and phytonutrient complex as combined totals. Stact Longevity+’s 300 mg organic fruit blend is also a combined total; it is a flavour and palatability component, not presented as an active system. A combined total alone does not establish effectiveness.
Regular U.S. 30-serving subscriptions
One more dollar a day.A different daily foundation.
At the displayed regular subscriptions, Longevity+ is $3.63 per serving and AG1 is $2.63. That additional dollar is where Stact Longevity+ makes room for creatine, a separately dosed nine-EAA formula, citicoline, phosphatidylserine, theanine, hyaluronic acid, MSM, NR and glutathione.
$0.19 vs. $0.20 per gram using published 19 g and 13 g serving masses. Cost per gram measures formula mass supplied, not clinical effectiveness.
One scoop
19 gDaily nutrition, creatine, all nine EAAs, focus-oriented ingredients and selected healthy-aging additions.
One scoop
13 gDaily nutrition, plant ingredients, prebiotics and probiotics in AG1’s greens-based approach.
The Stact philosophy
Stact Longevity+ is built on a minimum-effective-dose philosophy. Every ingredient has a purpose, and every dose is selected with that purpose in mind. This is a formulation philosophy, not a claim that every amount is a proven universal minimum.
It’s about how long you live the way you want.”The Stact Philosophy
Built on clear comparisons.
This page compares Stact Longevity+ with U.S. AG1 Next Gen Original powder. It excludes AG1 Pro, which contains creatine, and separate or bundled supplements.
How to read this comparison
“Not listed” means absent as a named ingredient on the reviewed label; it does not exclude naturally occurring compounds in food or plant ingredients. No head-to-head clinical trial is presented. Ingredient research may use other doses or forms and does not prove that the complete Stact Longevity+ formula produces superior outcomes.
Sources / product information reviewed 18 September 2026
- [1] Stact Wellness: The Formula
- [2] Stact Wellness: Longevity+ product and subscription information
- [3] AG1: U.S. Next Gen ingredient information
- [4] AG1: Original powder, serving size and subscription information
- [5] AG1: Next Generation product information
Prepared by Stact Wellness. Product details and prices may change. Supplements are not intended to diagnose, treat, cure or prevent disease. This is a comparison of formulation choices and cost, not a head-to-head clinical trial.
