Research and Comparison Hub: Supplement Comparisons by Goal
Side by side comparisons of the supplement ingredients people ask us about most, grouped by goal. Each guide explains how two ingredients differ, what the research looks at and whether people take them together. Jump to a goal:
Energy and Longevity
Comparisons of NAD+ precursors and the longevity ingredients people most often pair with them.
- NMN vs Glutathione: Two Different Jobs and Whether to Take Both
- Does NMN Work? What Human Trials Show and Whether It Is Legit
- Urolithin A vs NMN: Differences, NAD+ and Taking Them Together
- Spermidine and NMN: How They Differ and Taking Them Together
- Spermidine for Hair Growth: What the Hair Study Found and How to Take It
- Resveratrol and Quercetin: Benefits, Differences and Taking Them Together
- Cordyceps vs Ashwagandha: Energy, Stress and Taking Them Together
- Shilajit vs Creatine: Differences, Benefits and Taking Them Together
- Shilajit vs Fulvic Acid: Is Fulvic Acid the Same as Shilajit?
- How to Stack NAD+, Glutathione and Methyl B-12 Nasal Sprays
- NAD+ Nasal Spray Cost Per Month: Prices by Strength
Daily NAD+ support
Our NAD+ Nasal Spray comes in 35, 100 or 170 mg per serving and ships cold. It is absorbed through the lining of the nose instead of being swallowed like a capsule.
Shop NAD+ Nasal SprayAlso see Enhanced NMN, Urolithin A + Spermidine Capsules and Creatine Monohydrate.
Sleep
How the most common sleep and wind-down ingredients compare, and which ones people take together.
- GABA vs Melatonin: Differences for Sleep and Taking Them Together
- 5-HTP vs Melatonin: Which Is Better for Sleep and Can You Take Both?
- GABA vs L-Theanine: Differences for Sleep, Stress and Taking Both
- 5-HTP or L-Theanine: Which Fits Your Sleep and Calm Routine?
- Glycine vs Magnesium Glycinate: Differences, Glycine Math and Taking Both
- Glycine vs GABA: Differences for Sleep, Calm and Taking Both
- GABA vs Ashwagandha: How They Differ for Stress, Calm and Sleep
- Saffron for Sleep: What the Trials Found and How Much
- Magnesium Glycinate vs Oxide: Absorption, Gut Comfort and Sleep
A simpler night routine
Melatonin Nasal Spray fits into an evening wind-down routine. Prefer to skip melatonin? Try our Melatonin-Free Sleep Powder.
Shop Melatonin Nasal SprayAlso see Melatonin-Free Sleep Powder and Theanine Nasal Spray.
Focus and Mood
Nootropic and adaptogen comparisons for focus, memory, calm and stress.
- Rhodiola vs L-Theanine: Differences, Stress and Taking Both
- Alpha GPC and L-Theanine: How They Differ and Work Together
- Bacopa vs L-Theanine: Memory, Calm Focus and Taking Both
- Huperzine A and Alpha GPC: How They Differ and Work Together
- Alpha GPC vs L-Tyrosine: How They Differ for Focus and Can You Take Both
- Lion’s Mane vs L-Tyrosine: Two Different Routes to Focus
- Citicoline vs Caffeine: How They Differ and Taking Them Together
- Huperzine A vs Bacopa: Memory, Focus and Taking Them Together
- Bacopa vs Lion’s Mane: Memory, Focus and Taking Them Together
- Bacopa vs Ashwagandha: Memory, Stress and Taking Them Together
- Rhodiola vs Ashwagandha: Stress, Energy and Taking Them Together
- Rhodiola vs Saffron: Stress, Mood and Taking Them Together
- Saffron Side Effects: Stomach, Daily Use and How Much Is Too Much
Daily focus support
Clarity Nasal Spray is our focus formula, made in house in the USA with third-party tested ingredients, in three strengths.
Shop Clarity Nasal SprayAlso see Kanna Nasal Spray, Saffron Mood and Calm Capsules and Brain Energy Capsules.
Metabolic
Berberine and the ingredients it is most often compared with or combined with.
- Bitter Melon vs Berberine: Differences and Taking Them Together
- How to Take Berberine HCl Consistently: Meal Timing, Daily Routine and What Matters
- Berberine Phytosome vs HCl: Which Form Absorbs Best?
Berberine Blend
A 500 mg berberine HCl serving with Ceylon cinnamon, bitter melon and chromium, taken with meals as part of a daily routine.
Shop Berberine BlendAlso see Metabolic Stack.
Mushrooms
How the functional mushrooms compare: Lion’s Mane, Cordyceps, Chaga, Turkey Tail, Reishi, Maitake and Shiitake.
- Lion’s Mane vs Turkey Tail: Benefits, Differences and Taking Both
- Cordyceps vs Turkey Tail: Benefits, Differences and Taking Both
- Chaga vs Turkey Tail: Benefits, Differences and Taking Both
- Cordyceps vs Chaga: Benefits, Differences and Taking Both
- Maitake vs Reishi: Differences, Benefits and Taking Them Together
- Maitake vs Shiitake: Benefits, Differences and Taking Them Together
Mushrooms in one daily blend
Forage is our adaptogenic mushroom blend, and Mushroom Cacao puts functional mushrooms in a cacao drink.
Shop ForageAlso see Mushroom Cacao and NAD+ and Mushroom Cacao Bundle.
Product Facts and Testing Standards
The key facts behind every guide on this page: how our ingredients are tested, which sprays ship cold, and the exact amount in each serving of every product we sell, with current prices.
Testing standards
- Made in house in the USA: we formulate and make our products ourselves.
- Third-party tested ingredients: each ingredient is tested by an independent third party for purity, potency, microbiological content, residual solvents and heavy metals. See our third-party testing page.
- Short labels: our nasal sprays contain only their active ingredients plus alkaline water, and every label shows the amount per serving and per bottle.
- No prescription: every product is a dietary supplement you can buy directly, with no telehealth visit or membership.
Cold shipping
NAD+ Nasal Spray, Glutathione Nasal Spray and Clarity Nasal Spray ship cold. They stay refrigerated until they are packed in an insulated cooler with frozen gel packs, and they ship by temperature-protected express. Keep them in the fridge once they arrive. Every other product ships at room temperature.
Nasal sprays: amounts and prices
A serving is two sprays, one in each nostril, and every bottle holds 30 servings. Each spray is absorbed through the lining of the nose instead of being swallowed like a capsule.
| Product | Format | What is in each serving | Price (one-time) | Ships cold |
|---|---|---|---|---|
| NAD+ Nasal Spray | Nasal spray, 30 servings | NAD+: 35 mg (Regular), 100 mg (Extra) or 170 mg (Maximum). Ingredients: NAD+ and alkaline water. | $149 / $199 / $249 | Yes |
| Glutathione Nasal Spray | Nasal spray, 30 servings | Reduced glutathione: 35 mg (Regular), 100 mg (Extra) or 170 mg (Maximum). Ingredients: glutathione and alkaline water. | $119 / $179 / $219 | Yes |
| Clarity Nasal Spray | Nasal spray, 30 servings | NAD+ 50, 100 or 150 mg with Alpha GPC (10, 15 or 20 mg), huperzine A (100, 150 or 200 mcg) and methyl B12 (200, 350 or 500 mcg), by strength. No caffeine. | $159 / $219 / $269 | Yes |
| Methyl B-12 Nasal Spray | Nasal spray, 30 servings | Vitamin B12 (as methylcobalamin): 408 mcg. Ingredients: methylcobalamin and alkaline water. | $59 | No |
| Melatonin Nasal Spray | Nasal spray, 30 servings | Melatonin 200 mcg and L-theanine 17 mg. | $59 | No |
| NAC Nasal Spray | Nasal spray, 30 servings | N-acetyl cysteine (NAC): 50 mg. | $59 | No |
| Theanine Nasal Spray | Nasal spray, 30 servings | L-theanine: 36 mg. | $59 | No |
| Kanna Nasal Spray | Nasal spray, 30 servings | Kanna extract 20, 35 or 50 mg with L-theanine 15, 25 or 35 mg, by strength. | $79 / $99 / $119 | No |
Capsules, drops and powders: amounts and prices
| Product | Format | What is in each serving | Price (one-time) | Ships cold |
|---|---|---|---|---|
| Enhanced NMN | Capsules, 30 servings | NMN 750 mg, TMG 200 mg, resveratrol 200 mg, pterostilbene 100 mg, vitamin B12 (as methylcobalamin) 750 mcg. | $99 | No |
| Forage | Capsules | Seven 8:1 mushroom fruiting body extracts (lion's mane, cordyceps and reishi 200 mg each; chaga, maitake, turkey tail and shiitake 150 mg each), Himalayan shilajit extract 100 mg, ashwagandha root extract 100 mg. | $99 | No |
| Clarity Capsules | Capsules | Lion's mane 8:1 fruiting body extract 250 mg, epimedium 200 mg, maca root 200 mg, bacopa monnieri 200 mg, rhodiola rosea 150 mg, huperzine A 200 mcg. | $59 | No |
| Berberine Blend | Capsules | Berberine 500 mg, Ceylon cinnamon 300 mg, bitter melon extract 100 mg, chromium picolinate 250 mcg. | $55 | No |
| OEA Supplement | Capsules, 30 servings | OEA 200 mg, PEA 200 mg, L-theanine 200 mg, acetyl-L-carnitine 200 mg, green tea extract 200 mg. | $69 | No |
| Anandamide Supplement | Capsules, 30 servings | Anandamide 600 mg, PEA 250 mg, L-theanine 100 mg. | $59 | No |
| Lithium Orotate Supplement | Capsules | Lithium orotate 5 mg with reishi, lemon balm, zinc and vitamin B6 (as P5P). | $55 | No |
| Vitamin D3 + K2 Drops | Liquid drops | Per drop: vitamin D3 50 mcg (2,000 IU) from lichen, vitamin K2 300 mcg (MK-7 200 mcg and MK-4 100 mcg), in MCT oil. | $39 | No |
| Mushroom Cacao | Powder, 28 servings | Per 5 g serving: lion's mane 8:1 extract 500 mg and cordyceps 8:1 extract 500 mg in a cacao base, 0 g total sugars. | $49 | No |
| Creatine Monohydrate | Powder | Creatine monohydrate: 5 g per scoop. | $59 | No |
| Melatonin-Free Sleep Powder | Powder | Tart cherry, glycine 3 g, magnesium 200 mg from two forms, myo-inositol and apigenin. No melatonin, no 5-HTP. | $59 | No |
Prices are for a one-time order. Most products can also be bought on Subscribe and Save: 15% off every monthly delivery, or 33% off a delivery every 3 months.
More Ways to Learn
Browse the full guides library, read how nasal spray supplements work, see our third-party testing, or visit the blog. Not sure where to start? Take the quiz.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.