Ashwagandha vs L-Theanine: Which Is Better for Stress?
Both score anxiety 7.5–8.0/10, so the tie-breaker is time. L-theanine works in about an hour and you take it when you need it. Ashwagandha takes eight weeks and…
- Ashwagandha
- L-Theanine
Best Interventions for Immune Support, Ranked by Evidence
Every intervention Outliyr has scored for immune support, ranked by its BioHarmony score for this use case rather than its overall rating. The number beside each name is how well that one thing works for immune support; the tier beside it is what it is worth once safety, cost and effort are counted across everything else.
73 of 129 evaluated interventions score 3.0+ out of 10 for immune support · 15 comparisons
Ranked for Immune Support
Category
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Thymosin Alpha-1
Cao 2024 anchors the most relevant signal. Thymosin Alpha-1 fits immune function when immune modulation is medically relevant and monitored rather than casually guessed. The score stays bounded because the best evidence…
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Lactoferrin
Neonatal and pediatric signals are stronger than healthy-adult respiratory prevention. Berthon 2026 adds a modern older-adult RCT showing lower RV-16-induced IL-6 and T-cell subset shifts after 600 mg/day, while Berthon 2022 found…
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Vitamin D3 + K2
Jolliffe 2021 anchors the most relevant signal. Vitamin D3 + K2 fits immune function when deficiency, bone risk, immune seasonality, or fat-soluble nutrient gaps are present. The score stays bounded because benefits…
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Astaxanthin
Liu 2024 reports 11 RCTs; 346 healthy participants; significant improvements reported across fatigue, cognition, and exercise-efficiency endpoints overall; endpoint details are limited. Maleki-Hajiagha 2024 points in the same direction, but route, dose,…
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Colostrum
Hajihashemi et al. 2024 supports the core mechanism. The strongest adult endpoint is upper respiratory symptom reduction in exercise-stressed adults. Jones 2016 found fewer symptom days and episodes across 5 RCTs, while…
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Rapamycin
Mannick 2018 anchors the most relevant signal. Rapamycin fits immune function when mTORC1 modulation, autophagy, immune aging, or senescence biology is the actual target. The score stays bounded because human longevity endpoints…
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Infrared Sauna
Kihara 2002 supports the strongest part of the claim. The existing rationale points to this narrower claim: Immune support is plausible through heat-shock proteins, mild hyperthermia, and respiratory-health cohort signals. this verified…
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Essential Amino Acids
Hagiyama 2024 reports 12 RCTs; 622 patients; low-certainty improvement in patient-reported outcomes and very-low-certainty strength signal after lower-limb surgeries. Wittholz 2024 points in the same direction, but route, dose, baseline status, and…
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Glycine
Soh 2024 anchors the most relevant signal. Glycine fits immune function because glycine participates in sleep signaling, glutathione, collagen, methylation, and nervous-system balance, depending on the endpoint. The score stays bounded because…
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Vitamin C (Ascorbic Acid)
The real-world signal is modest but genuine. The Hemila 2013 Cochrane review pooled 29 comparisons and 11,306 people: regular supplementation did not prevent colds in the general population (RR 0.97), but it…
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Fucoidan (Brown Seaweed Polysaccharide)
Negishi 2013 ran a double-blind RCT in 70 adults over 60 taking 300 mg per day of Undaria fucoidan for four weeks before influenza vaccination, and the fucoidan group reached higher antibody…
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Ozone Therapy
Chang 2024 reports Verified audit Track 1 and Track 2 source; supports narrow intradiscal lumbar disc efficacy, especially versus steroid injection at 6 months and similar outcome to microdiscectomy at 18 months.…
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High-Dose Melatonin
High-Dose Melatonin has immune-function evidence in oncology and critical illness, but replication is uneven. The Integrative Cancer Therapies meta-analysis reported one-year mortality RR 0.63 across 21 RCTs, with most positive oncology trials…
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Molecular Hydrogen
Dhillon 2024 reports 25-article systematic review; mixed preliminary clinical evidence, heterogeneity, and need for stronger trials. Zhou 2024 points in the same direction, but route, dose, baseline status, and outcome tracking decide…
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Spermidine
Eisenberg 2016 supports the strongest part of the claim. The existing rationale points to this narrower claim: T-cell autophagy and immune-aging signals are part of the mechanistic case, but the audit could…
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Ca-AKG (Calcium Alpha-Ketoglutarate)
Shahmirzadi 2020 supports the strongest part of the claim. The existing rationale points to this narrower claim: IL-10 modulation in this verified source supports an immune-aging angle. Human immune-function outcomes are untested.…
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Zone 2 Cardio
Lang 2024 makes the claim plausible but incomplete. The existing rationale points to this narrower claim: Moderate aerobic exercise supports immune surveillance and may reduce respiratory infection risk compared with inactivity. Very…
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Red Light Therapy
Hamblin 2017 supports photobiomodulation effects on inflammation, which can shape immune tone. That does not mean Red Light Therapy boosts immunity in a simple way. The best use case is immune balance…
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Vagus Nerve Stimulation
Koopman et al. 2016 supports selective use. Vagal inflammatory reflex evidence supports immune modulation, but routine wellness claims are ahead of the data unless tied to defined inflammatory endpoints. The score stays…
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Senolytics
Shimizu 2025 found no overall primary immune endpoint benefit for APE, but did report a male subgroup CD8+ senescence-marker signal. The score stays bounded because Senolytics evidence for immune function can depend…
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Adaptogenic Mushrooms (Reishi, Cordyceps, Chaga)
Immune support is the trio's best-evidenced claim, and reishi carries it. Chen 2023 randomized 135 healthy adults to 200 mg/day reishi beta-glucan for 84 days and reported NK-cell counts up 19.5 percent,…
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Taurine
Tzang 2024 reports 25 RCTs and 1024 participants; lower SBP, DBP, fasting blood glucose, and triglycerides; no significant adverse-effect excess. Tzang 2024 points in the same direction, but route, dose, baseline status,…
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Traditional Sauna (Finnish Dry-Heat)
The respiratory-disease cohort results from Kunutsor 2017, where 4 or more weekly sessions tracked a 41 percent lower risk of incident respiratory disease including pneumonia, imply a real immune or pulmonary benefit.…
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TB-500 (Thymosin Beta-4 Fragment)
Thymosin-family compounds have immune relevance, but TB-500 is not thymosin alpha-1 and should not be treated as a primary immune protocol. Wang 2024 supports host-defense modulation in keratitis models only. That makes…
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Lion’s Mane
Menon 2025 anchors the most relevant signal. Lion's Mane fits immune function when the goal is gentle mushroom-based support for cognition, mood, nerve biology, or gut-immune signaling over weeks. The score stays…
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Whole-Body Vibration
Whole-Body Vibration may influence immune markers by reducing circulating cytokines, but the effect appears limited to specific inflammatory pathways rather than broad immune enhancement. Trials in healthy adults show small, transient drops…
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Chlorella
Kwak 2012 gave 5 g/day for 8 weeks (n=51) and found significantly higher natural-killer-cell activity and rises in IFN-gamma and IL-1beta, while Otsuki 2011 showed increased salivary secretory IgA. The honest counterweight…
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Glutathione (GSH)
Glutathione is essential to lymphocyte and natural-killer-cell function, and Richie 2015 reported natural-killer-cell cytotoxicity more than doubled at 3 months in the high-dose arm. A liposomal pilot pointed the same direction with…
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Methylene Blue
Rothenberg 2025 supports the strongest part of the claim. The existing rationale points to this narrower claim: Historical antimicrobial and antimalarial use supports a low positive immune-function score, but modern consumer immune…
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Melanotan I (Afamelanotide)
Melanotan I earns a modest immune-function score because melanocortin biology has anti-inflammatory signaling, and small dermatology reports suggest benefits in inflammatory skin conditions. The Hailey-Hailey case series reported lesion clearance after two…
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Neurofeedback
Recio-Rodriguez et al. 2024 supports limited benefit. Immune effects are indirect through stress, sleep, and autonomic regulation. Neurofeedback is not an immune therapy. The score remains low-moderate because nervous-system regulation can influence…
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NAC (N-Acetylcysteine)
Glutathione status influences lymphocyte function and oxidative balance, and NAC has long been studied in respiratory and infectious contexts, with the mucolytic COPD benefit per Zheng 2014 (n=1,006, 22 percent fewer exacerbations)…
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Melatonin
Melatonin has immune-function relevance through circadian and inflammatory biology, but conventional-dose human outcome data are mixed outside special populations. The ICU Cochrane review found limited evidence for sleep promotion in intensive-care adults…
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Polyphenols (Dietary)
Polyphenols modulate inflammatory signaling and gut-microbiome composition, which plausibly supports immune balance, and observational diet-quality data is supportive. Direct human RCTs on infection or vaccine-response endpoints specific to polyphenols are sparse, so…
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Spirulina
The human evidence is indirect. Spirulina phycocyanin has antioxidant and immunomodulatory activity in mechanistic and animal work, and the Cingi 2008 allergic rhinitis RCT is the closest human immune-related outcome. There is…
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Metformin
Metformin's primary clinical data focus on cardiovascular and mortality outcomes, not on direct immune-performance metrics. The modest score reflects indirect metabolic benefits rather than a proven boost to immune cells or infection…
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Ashwagandha
The evidence points to a plausible use case without proving a universal response. Ferreira et al. 2025 is the best anchor here because it reports overview of 11 systematic reviews, 151 original…
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Ergothioneine
Ergothioneine accumulates in immune cells and the mushrooms that supply it carry beta-glucans with their own immune activity, but direct human immune-outcome trials of isolated ergothioneine are essentially absent. The mortality and…
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Semaglutide
Semaglutide may normalize obesity-linked inflammation, but the report has no direct immune-enhancement endpoint. Lincoff 2023 supports cardiometabolic risk reduction, not fewer infections or better immune surveillance. The neutral score is appropriate. In…
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Quinton Marine Plasma (Seawater Minerals)
Li 2019 pooled 4 RCTs and 351 children and found hypertonic saline nasal irrigation improved nasal symptom score (mean difference 1.82, p=0.02) and cut rescue antihistamine use (RR 0.68, p=0.02). Wang 2020…
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Quercetin
The Nieman 2010 community URTI RCT in 1002 adults was null overall, with a subgroup signal only in fit adults over 40 at 1000 mg/day. COVID adjunct trials such as Di Pierro…
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Thymulin (Zinc-Thymulin)
Immune function is thymulin's strongest case because the classical evidence here is unusually deep for a grey-market peptide. Thymulin drives intra- and extra-thymic T-cell differentiation through specific saturable receptors near 3 nanomolar…
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Hyperbaric Oxygen Therapy
HBOT affects immune cell senescence, cytokine balance, infection biology, and wound defense. Hachmo 2020 reports lower senescent immune-cell fractions after sixty hard-chamber sessions in older adults. Benson 2003 documents acute immune cell…
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HRV Biofeedback
Vagal anti-inflammatory pathway; one TNF-alpha RCT. Mechanism plausible.
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Norwegian 4×4
Moderate exercise supports immune function, while near-daily high-intensity work can create a transient recovery burden. Norwegian 4x4 scores modestly because dose discipline matters.
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Selank
Tuftsin-class immune activity is the clearest non-anxiety secondary lane. Human cytokine work in Uchakina 2008 and mouse inflammation-gene studies in Kolomin 2011 support immune modulation, but not a clinical immune-outcome claim.
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Sulforaphane
Mechanism work shows nasal immune and cytokine modulation, but the broader immune-disease trial signal is weak. NRF2 activation and KEAP1-NRF2-ARE biology are well mapped (Kensler 2007), and small studies suggest pollutant-driven immune…
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Urolithin A
Denk 2025 reported a 4-week immune-aging signal with naive-like CD8+ cell expansion and improved immune-cell fatty-acid oxidation. Useful signal, still early.
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TRT (Testosterone Replacement Therapy)
Testosterone affects immune signaling, inflammation, and body composition, but clinical immune outcomes from TRT are limited. Any immune benefit is likely indirect through metabolic health, sleep, and reduced frailty in deficient men.
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Thymalin
Immune function is thymalin's strongest and oldest claim, and the reason it was put into clinical use in Russia as an immunocorrector, per Morozov 1997. In human hematopoietic stem cell culture it…
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GHK-Cu
Immune-function keeps a low-to-moderate score because GHK-Cu affects wound immune recruitment and inflammatory cytokine signaling, but no immune-resilience trial exists. Pickart 2015 is the best review-level support.
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Thymosin Beta-4 (Tβ4)
Tβ4 modulates T-cell maturation in the thymus (the original reason it was named a thymic hormone in the 1960s, per Goldstein 2007) and dampens NF-κB-driven cytokine output across multiple cell types. The…
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KPV (Lys-Pro-Val)
NF-kB pathway suppression is a core immune-modulation mechanism for KPV, supported by Getting 2003 and Brzoska 2008, but no human immune-function trial exists.
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Tongkat Ali
Preliminary immune-modulation signals exist, but immune support is not a primary indication. Immunosuppressed users should be cautious because immune activation could be counterproductive.
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Sprinting (Sprint Interval Training)
Regular moderate training supports immunity, while near-daily maximal work can create a transient recovery burden. Dose discipline determines the net direction.
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Sodium Butyrate
The regulatory-T-cell and gut-barrier mechanisms are strong on paper, but human outcome data for immune support outside inflammatory bowel disease is thin. Mechanistically promising, clinically unproven for general immunity.
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Pine Pollen
Pine pollen polysaccharides modulate immune cells in models: Wang 2023 found PPM60 reduced colitis injury and raised IL-10 while lowering IL-1 beta, IL-6, and TNF-alpha in mice, and Sun 2018 showed the…
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Cold Plunge
The strongest evidence comes from Buijze 2016 PLOS ONE (n=3,018), where 30 days of hot-to-cold finishing showers reduced sickness absence days by 29 percent. Notably, illness frequency stayed the same. People got…
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Tirzepatide
Tirzepatide is not an immune intervention. The strongest support is indirect reduction of adiposity driven inflammation, CRP, and metabolic stress. That can help immune tone in obesity. No tirzepatide trial shows improved…
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LL-37 (Cathelicidin)
Immune function is LL-37's native job and the mechanism is genuinely deep, but the human therapy data is thin. It kills microbes by punching holes in their membranes, neutralizes bacterial LPS, and…
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Berberine
Human immune-outcome evidence is thin. Vahedi-Mazdabadi 2023 supports lower inflammatory biomarkers in adults, but that is not the same as fewer infections, better vaccine response, or stronger immune resilience. Berberine is better…
-
BPC-157
Immunomodulatory; balances immune response rather than stimulating. The safety gap matters here because peptide immunogenicity and route-specific immune reactions were part of FDA's concern history.
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Collagen Peptides
UC-II oral tolerance is an immune-modulation pathway, while glycine receptors on immune cells are mechanistically relevant. Collagen peptides lack systemic immune endpoint trials.
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Shilajit
Fulvic and humic fractions show immunomodulatory activity in preclinical work, and shilajit has long adaptogenic use. No human immune-function RCT justifies a higher score.
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Omega-3
Specialized pro-resolving mediators modulate immune resolution, but clinical immune outcomes remain limited and condition-specific.
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VIP (Vasoactive Intestinal Peptide)
Immune regulation is closely tied to the anti-inflammatory story and rests on the same evidence. VIP induces CD4+CD25+FoxP3+ regulatory T cells and shifts cytokines toward a tolerogenic profile, demonstrated in human airways,…
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Curcumin
Immune-modulating in mechanism, but no meaningful human outcome data for general immune support.
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Blood-Flow Restriction Training
General exercise can influence immune function, but BFR-specific immune outcomes are not established.
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Rucking (Weighted Walking)
Indirect. Moderate regular aerobic activity supports immune function broadly; heavy training loads can transiently suppress it. Not a rucking-specific effect.
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Bromantane (Ladasten)
T-cell subset normalization reported in C57BL/6 stress-anxiety models (Tallerova 2014), but no human immune endpoint.
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Epitalon
Thymus restoration and T-cell normalization are mainly aged-animal and Khavinson-lab claims, not verified human immune RCT outcomes. The 2010 Anisimov and Khavinson peptide-bioregulation review supports broad immune-aging context, but v1.0 keeps the…
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C15 (Pentadecanoic Acid)
No human C15:0 trial has measured infection rates, vaccine response, immune-cell function, T cell or B cell outcomes, or clinically meaningful immune endpoints. Ciesielski 2024 (Ciesielski 2024) supports continued research but not…
Nothing matches those filters.
What each one costs
Monthly out-of-pocket cost at the most accessible legitimate channel, at the dose the score was given for. 23 of 73 are not priced yet; those cells are left blank rather than guessed.
| Intervention | Monthly cost | At dose | How you get it |
|---|---|---|---|
| Thymosin Alpha-1 | $100–$400 | 1.6 mg subcutaneous | Prescription |
| Lactoferrin | $25–$50 | 250-300 mg apolactoferrin | Over the counter |
| Vitamin D3 + K2 | Not priced yet | ||
| Astaxanthin | Not priced yet | ||
| Colostrum | $60–$80 | 20 g/day powder, split AM/PM if tolerated | Over the counter |
| Rapamycin | $15–$50 | 3 mg | Prescription |
| Infrared Sauna | $36–$73 | 55-60 degrees C, 20-30 min | Over the counter |
| Essential Amino Acids | Not priced yet | ||
| Glycine | $2–$3 | 3 g oral glycine | Over the counter |
| Vitamin C (Ascorbic Acid) | Not priced yet | ||
| Fucoidan (Brown Seaweed Polysaccharide) | Not priced yet | ||
| Ozone Therapy | $520–$2,600 | 20-30 mcg/mL ozone, roughly 1,000-1,500 mcg total per session | In clinic |
| High-Dose Melatonin | Not priced yet | ||
| Molecular Hydrogen | Not priced yet | ||
| Spermidine | $40–$90 | 1-3 mg/day oral WGE | Over the counter |
| Ca-AKG (Calcium Alpha-Ketoglutarate) | $15–$30 | 1 g/day generic Ca-AKG oral | Over the counter |
| Zone 2 Cardio | Not priced yet | Over the counter | |
| Red Light Therapy | $17–$43 | 10-20 min at 6-12 inches, full chest/face/back rotation | Over the counter |
| Vagus Nerve Stimulation | $4–$8 | 10-20 min auricular tVNS at comfortable perceptible intensity | Over the counter |
| Senolytics | Not priced yet | ||
| Adaptogenic Mushrooms (Reishi, Cordyceps, Chaga) | $15–$40 | 1.5 to 1.8 g/day standardized extract | Over the counter |
| Taurine | $3–$10 | 1-3 g, 30-60 minutes before sleep | Over the counter |
| Traditional Sauna (Finnish Dry-Heat) | $50 | 15 to 20 minutes at 80 to 100 C | Over the counter |
| TB-500 (Thymosin Beta-4 Fragment) | Not priced yet | ||
| Lion’s Mane | $20–$40 | 3 g/day fruiting body extract | Over the counter |
| Whole-Body Vibration | $50–$100 | 30 Hz, roughly 0.3g, 10-20 min standing | Over the counter |
| Chlorella | $10–$50 | 5-10 g/day | Over the counter |
| Glutathione (GSH) | $20–$45 | 1,000 mg/day | Over the counter |
| Methylene Blue | $13–$40 | 0.5-5 mg oral | Over the counter |
| Melanotan I (Afamelanotide) | $38–$129 | Variable, microgram-to-milligram loading cycles, not clinically validated | Grey market |
| Neurofeedback | Not priced yet | ||
| NAC (N-Acetylcysteine) | $5–$15 | 600 to 1,200 mg/day | Over the counter |
| Melatonin | $3–$8 | 0.5 to 3 mg | Over the counter |
| Polyphenols (Dietary) | Not priced yet | ||
| Spirulina | $10–$25 | 1 to 4.5 g/day | Over the counter |
| Metformin | $4–$30 | 500 mg with dinner for 1 week, then 500 mg twice daily for 1 week, then increase by 500 mg/week toward 1000 mg twice daily as tolerated | Prescription |
| Ashwagandha | $15–$30 | 300 mg KSM-66 with breakfast and 300 mg with dinner | Over the counter |
| Ergothioneine | Not priced yet | ||
| Semaglutide | $199–$349 | 0.25 mg weeks 1 to 4, 0.5 mg weeks 5 to 8, 1.0 mg weeks 9 to 12, 1.7 mg weeks 13 to 16, 2.4 mg week 17 onward | Prescription |
| Quinton Marine Plasma (Seawater Minerals) | Not priced yet | ||
| Quercetin | $20–$50 | 200 mg/day | Over the counter |
| Thymulin (Zinc-Thymulin) | $22–$65 | Low microgram range, with zinc status confirmed first | Research use only |
| Hyperbaric Oxygen Therapy | $3,000–$6,000 | 2.0 ATA for 90 minutes with air breaks | In clinic |
| HRV Biofeedback | $5 | 20 min/session at individual RF (4.5 to 6.5 bpm) | Over the counter |
| Norwegian 4×4 | Not priced yet | Over the counter | |
| Selank | $30–$60 | 0.15% intranasal spray, roughly 1-3 sprays per nostril per day depending on actuation size | Grey market |
| Sulforaphane | $25–$60 | Broccoli sprout extract delivering about 150 micromoles sulforaphane per day | Over the counter |
| Urolithin A | $50–$100 | 500 mg/day | Over the counter |
| TRT (Testosterone Replacement Therapy) | $50–$300 | Clinician-selected formulation at the lowest dose likely to restore physiologic testosterone | Prescription |
| Thymalin | $113–$590 | 5 to 10 mg | Grey market |
| GHK-Cu | $30–$100 | 0.5-3% topical serum or cream | Over the counter |
| Thymosin Beta-4 (Tβ4) | Not priced yet | ||
| KPV (Lys-Pro-Val) | $40–$100 | 250-500 mcg/day oral | Grey market |
| GlyNAC (Glycine + N-Acetylcysteine) | $10–$30 | Glycine and NAC at ~100 mg/kg/day each | Over the counter |
| Tongkat Ali | $20–$40 | 200 mg/day Physta standardized extract | Over the counter |
| Sprinting (Sprint Interval Training) | Not priced yet | ||
| Sodium Butyrate | Not priced yet | ||
| Pine Pollen | $20–$45 | 5 to 10 g powder per day | Over the counter |
| Cold Plunge | Not priced yet | Over the counter | |
| Tirzepatide | $299–$449 | 2.5 to 5 to 7.5 to 10 to 12.5 to 15 mg | Prescription |
| LL-37 (Cathelicidin) | Not priced yet | ||
| Berberine | $15–$25 | 500 mg berberine HCl three times daily with meals | Over the counter |
| BPC-157 | $40–$80 | 250 to 500 mcg SC 1 to 2x/day near injury site | Grey market |
| Collagen Peptides | $8–$40 | 2.5-10 g hydrolyzed collagen peptides | Over the counter |
| Shilajit | $25–$50 | 500 mg purified shilajit | Over the counter |
| Omega-3 | $20–$40 | 1-2 g/day combined EPA+DHA | Over the counter |
| VIP (Vasoactive Intestinal Peptide) | Not priced yet | ||
| Curcumin | $15–$40 | 500 mg curcuminoids | Over the counter |
| Blood-Flow Restriction Training | Not priced yet | ||
| Rucking (Weighted Walking) | Not priced yet | ||
| Bromantane (Ladasten) | $12–$30 | 30 mg | Grey market |
| Epitalon | $95–$1,100 | 5-10 mg/day subcutaneous | Grey market |
| C15 (Pentadecanoic Acid) | $40–$50 | 200 mg/day | Over the counter |
Comparisons that judge immune support
Head-to-head reports and category rankings that name a winner on this use case.
BPC-157 vs KPV: Which Peptide Is Better for Gut Healing?
BPC-157 for structural repair, KPV for inflammation you cannot afford to stimulate. BPC-157 scores gut health 9.0–9.5/10 against KPV's 7.0–7.5/10 and wins nearly every other row, because it…
- BPC-157
- KPV
Colostrum vs Collagen Peptides: Which Should You Buy?
These two get sold as the same thing, a scoop for gut and skin, and they share almost no mechanism. Colostrum is a gut and immune product: gut…
- Colostrum
- Collagen Peptides
CoQ10 vs Methylene Blue: Which Is Better for Energy?
CoQ10 scores 7.0–7.5/10 and methylene blue 6.0–6.5/10, yet methylene blue wins eleven of the seventeen shared use cases. The overall gap is risk, not effect. Methylene blue inhibits…
- Coenzyme Q10
- Methylene Blue
Curcumin vs Quercetin: Which Is Better for Inflammation?
Different jobs, same shelf. Quercetin scores 6.5–7.0/10 and curcumin 5.5–6.0/10, and that gap is the liver-safety signal rather than a difference in effect. Curcumin wins joints, inflammatory markers,…
- Curcumin
- Quercetin
Lion’s Mane vs Mushroom Blends: Which Is Better for Focus?
Lion's Mane scores 7.0–7.5/10 and the reishi, cordyceps and chaga blend category scores 5.0–5.5/10. If cognition is the goal, buy the one species: lion's mane takes cognition-focus 7.0/10…
- Lion’s Mane
- Adaptogenic Mushrooms
Melanotan I vs Melanotan II: Which Peptide Is Safer for Tanning?
Melanotan I is the safer tanning peptide and it scores higher, 6.0–6.5/10 against 4.5–5.0/10. Both darken skin through the same receptor. Melanotan II hits three more receptors, which…
- Melanotan I
- Melanotan II
Spermidine vs Urolithin A: Which Is Better for Longevity?
Spermidine scores 7.5–8.0/10 and urolithin A 6.5–7.0/10, and they clean up different messes. Spermidine drives broad autophagy: autophagy 8.0/10, cardiovascular 7.8/10, longevity 7.5/10. Urolithin A drives selective mitophagy…
- Spermidine
- Urolithin A
Sulforaphane vs Glutathione: Which Is the Better Antioxidant?
Sulforaphane scores 6.5–7.0/10 and glutathione 6.0–6.5/10, and both have a delivery problem. Sulforaphane needs active myrosinase or you absorb half as much. Plain oral glutathione barely raises blood…
- Sulforaphane
- Glutathione
Thymalin vs Thymulin: Which Peptide Is Better for Immunity?
Thymulin scores 6.5–7.0/10, thymalin 5.5–6.0/10, and they are not interchangeable. Thymulin is a defined zinc-dependent peptide with receptor-level science, stronger inflammation data and a much cheaper course. Thymalin…
- Thymalin
- Thymulin
Lactoferrin vs Colostrum: Which Is Better for Immunity?
Lactoferrin scores 7.0–7.5/10 against colostrum's 6.5–7.0/10, and lactoferrin is one protein inside colostrum. Buy lactoferrin when iron handling, acne or H. pylori is the target, at $25 to…
- Lactoferrin
- Colostrum
NAC vs Glutathione: Which Is Better for Your Liver?
NAC scores 8.0–8.5/10 and glutathione 6.0–6.5/10, and that gap is real. NAC is the cheaper upstream precursor with a six-decade clinical record, so start there. Glutathione earns its…
- NAC
- Glutathione
Questions about immune support
What scores highest for immune support?
Thymosin Alpha-1, at 9.0–9.5 out of 10 for immune support. Cao 2024 anchors the most relevant signal.
What is the cheapest thing that works for immune support?
Of the top-scoring options, Glycine is the least expensive at about $2 a month, scoring 6.5–7.0 out of 10 for immune support.
What should I be careful with for immune support?
C15 (Pentadecanoic Acid) scores 3.0–3.5 out of 10 for immune support but only 3.0–3.5 overall, landing in the caution tier once safety, side effects, cost and effort are counted.
How many interventions has Outliyr scored for immune support?
73 of the 129 interventions evaluated for immune support score 3.0 out of 10 or better, which is the cut-off for appearing on this page.
