Best Interventions for Healthy Aging, Ranked by Evidence

Every intervention Outliyr has scored for healthy aging, 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 healthy aging; the tier beside it is what it is worth once safety, cost and effort are counted across everything else.

68 of 111 evaluated interventions score 3.0+ out of 10 for healthy aging · 18 comparisons

Ranked for Healthy Aging

Category
  1. Essential Amino Acids

    8.5–9.0 /10 for healthy aging 7.5–8.0/10 overall Strong recommend Amino Acid

    Xie 2026 reports 9 RCTs; 496 participants; improved handgrip strength, gait speed, SPPB, and sit-to-stand with low-to-very-low certainty. Thavonlun 2026 points in the same direction, but route, dose, baseline status, and outcome…

  2. Glycine

    8.5–9.0 /10 for healthy aging 7.5–8.0/10 overall Strong recommend Vitamin & Mineral & Nutrient

    Soh 2024 anchors the most relevant signal. Glycine fits geriatric because glycine participates in sleep signaling, glutathione, collagen, methylation, and nervous-system balance, depending on the endpoint. The score stays bounded because many…

  3. Whole-Body Vibration

    8.0–8.5 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Vibration & Mechanical Stimulation

    Whole-Body Vibration may help preserve functional mobility in this population by stimulating muscle spindles and enhancing neuromuscular activation, mechanisms that support balance and gait. Evidence from randomized trials shows modest improvements in…

  4. Creatine Monohydrate

    7.5–8.0 /10 for healthy aging 8.5–9.0/10 overall Strong recommend Vitamin & Mineral & Nutrient

    Chilibeck 2017 reports Older adults; +1.37 kg lean mass; leg press SMD 0.24. Van 2009 points in the same direction, but route, dose, baseline status, and outcome tracking decide whether Creatine Monohydrate…

  5. Blood-Flow Restriction Training

    7.5–8.0 /10 for healthy aging 8.0–8.5/10 overall Strong recommend Resistance & Strength

    Lixandrao et al. 2018 supports the core mechanism. Centner 2019 found BFR increased strength and muscle mass in older adults, especially when heavy lifting was less practical. The score stays bounded because…

  6. Zone 2 Cardio

    7.5–8.0 /10 for healthy aging 8.0–8.5/10 overall Strong recommend Cardiovascular

    Kodama 2009 supports the strongest part of the claim. The existing rationale points to this narrower claim: Moderate aerobic training is highly relevant for older adults because it improves walking capacity, blood…

  7. Full-Body EMS

    7.5–8.0 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Resistance & Strength

    Kemmler-group RCTs and the Yang 2022 sarcopenic-obesity meta-analysis support lean-mass and physical-function gains in older adults, while Bloeckl 2022 supports feasibility and safety in frail older people under supervision. That makes Full-Body…

  8. Thymosin Alpha-1

    7.5–8.0 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Immune Peptide

    Wu 2025 anchors the most relevant signal. Thymosin Alpha-1 fits geriatric when immune modulation is medically relevant and monitored rather than casually guessed. The score stays bounded because the best evidence is…

  9. Ca-AKG (Calcium Alpha-Ketoglutarate)

    7.5–8.0 /10 for healthy aging 6.5–7.0/10 overall Worth trying Vitamin & Mineral & Nutrient

    Filip 2007 makes the claim plausible but incomplete. The existing rationale points to this narrower claim: Cleanest responder profile is adults 50+ with lower endogenous AKG and higher frailty risk. this verified…

  10. Spermidine

    7.0–7.5 /10 for healthy aging 7.5–8.0/10 overall Strong recommend Vitamin & Mineral & Nutrient

    Schwarz 2022 makes the claim plausible but incomplete. The existing rationale points to this narrower claim: Older adults are the clearest target population across this verified source and this verified source. That…

  11. Norwegian 4×4

    7.0–7.5 /10 for healthy aging 8.0–8.5/10 overall Strong recommend Cardiovascular

    The Norwegian 4x4 regimen involves four minutes of near-maximal effort followed by three minutes of active recovery, repeated four times. Evidence from umbrella reviews and meta-analyses places HIIT at a Tier 2…

  12. Grass-Fed Whey Protein

    6.5–7.0 /10 for healthy aging 8.0–8.5/10 overall Strong recommend Vitamin & Mineral & Nutrient

    Older adults have higher protein needs and greater sarcopenia relevance. The strongest support comes from Shimomura Y. et al. 2006, but the practical rating stays bounded by study size, replication, and how…

  13. Lion’s Mane

    6.5–7.0 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Functional Mushroom

    Menon 2025 anchors the most relevant signal. Lion's Mane fits geriatric when the goal is gentle mushroom-based support for cognition, mood, nerve biology, or gut-immune signaling over weeks. The score stays bounded…

  14. HRV Biofeedback

    6.5–7.0 /10 for healthy aging 9.0–9.5/10 overall Top-tier Wearable & Tracker

    Karavidas et al. 2007 gives the strongest anchor. Age-related HRV decline makes training especially relevant; positive small trials in older adults. The score stays bounded because HRV Biofeedback evidence for geriatric can…

  15. Astaxanthin

    6.5–7.0 /10 for healthy aging 7.5–8.0/10 overall Strong recommend Vitamin & Mineral & Nutrient

    Liu 2024 reports 11 RCTs; 346 healthy participants; significant improvements reported across fatigue, cognition, and exercise-efficiency endpoints overall; endpoint details are limited. Laurindo 2025 points in the same direction, but route, dose,…

  16. Phosphatidylserine

    6.5–7.0 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Vitamin & Mineral & Nutrient

    Older adults are the primary target population. Crook 1991 and Cenacchi 1993 support the core signal, while modern S-PS findings are smaller and less consistent. The score stays bounded because Phosphatidylserine evidence…

  17. Metformin

    6.5–7.0 /10 for healthy aging 6.5–7.0/10 overall Worth trying Metabolic & Glycemic Drug

    Metformin may improve glycemic control in older adults, but renal decline, frailty, reduced appetite, vitamin B12 depletion, and drug interactions are common concerns. Guidelines from the ADA and NICE stress individualized dosing…

  18. Epitalon

    6.5–7.0 /10 for healthy aging 6.5–7.0/10 overall Worth trying Mitochondrial & Longevity Peptide

    The evidence points to a plausible use case without proving a universal response. Kozina et al. 2007 is the best anchor here because it reports old-rat antioxidant-system evidence for pineal geroprotective peptides.…

  19. Traditional Sauna (Finnish Dry-Heat)

    6.0–6.5 /10 for healthy aging 7.5–8.0/10 overall Strong recommend Sauna & Heat Therapy

    Much of the KIHD cohort benefit accrued in middle-aged and older men followed into older age, and the cardiovascular, hypertension, and dementia associations from Laukkanen 2017 are exactly the outcomes that matter…

  20. Collagen Peptides

    6.0–6.5 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Amino Acid

    Strong target population. Koenig 2018 supports postmenopausal bone outcomes and Zdzieblik 2015 supports older men in resistance training. That makes Collagen Peptides more defensible when geriatric is a real bottleneck and less…

  21. GHK-Cu

    6.0–6.5 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Cosmetic & Dermatologic Peptide

    Age-related decline in endogenous GHK and cellular repair signaling supports the preserved geriatric score, especially in older skin. Pickart 2015 and He 2024 support age-repair and fibrosis mechanisms, but clinical geriatric outcomes…

  22. Saffron

    6.0–6.5 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Botanical Extract (non-adaptogenic)

    Zhang et al. 2025 is the best anchor here because it reports 25 randomized trials, 1486 participants and improved fasting glucose, HbA1c, total cholesterol, systolic blood pressure, and diastolic blood pressure, with…

  23. GlyNAC (Glycine + N-Acetylcysteine)

    6.0–6.5 /10 for healthy aging 6.5–7.0/10 overall Worth trying Amino Acid

    Glutathione synthesis is documented to fall with age in Sekhar 2011, and correcting it produced functional gains: Kumar 2023 reported significant improvements in gait speed, grip strength, and the chair-rise test in…

  24. Tongkat Ali

    6.0–6.5 /10 for healthy aging 6.5–7.0/10 overall Worth trying Adaptogenic Herb

    The existing rationale points to this narrower claim: Age-related testosterone decline is the clearest responder profile. the cited study, the cited study, and Leitão 2021 all fit older or aging-male. That does…

  25. Tesamorelin

    6.0–6.5 /10 for healthy aging 6.0–6.5/10 overall Worth trying Growth Hormone Secretagogue

    Tesamorelin targets an age-sensitive GH/IGF-1 axis and may improve VAT, cognition, and muscle quality in select older adults, but the geriatric case is conditional. Adrian 2019 supports exploratory muscle-quality changes in HIV…

  26. TRT (Testosterone Replacement Therapy)

    6.0–6.5 /10 for healthy aging 5.5–6.0/10 overall Neutral Hormone Therapy

    Resnick 2017 reports T Trials cognition substudy; null for memory and executive-function benefit. Snyder 2016 points in the same direction, but route, dose, baseline status, and outcome tracking decide whether TRT (Testosterone…

  27. Hyperbaric Oxygen Therapy

    5.5–6.0 /10 for healthy aging 5.5–6.0/10 overall Worth trying Hyperbaric

    Older-adult cognition, telomere work, wound care, and radiation-injury data make geriatric one of the more relevant off-label slugs. Hadanny 2020 supports cognitive gains in adults age 64 and older after hard-chamber protocols.…

  28. Vitamin C (Ascorbic Acid)

    5.5–6.0 /10 for healthy aging 7.5–8.0/10 overall Strong recommend Vitamin & Mineral & Nutrient

    Vitamin C deficiency is more common in the elderly because of lower dietary intake, reduced appetite, and higher prevalence of smoking and chronic illness, and the consequences (poor wound healing, fatigue, fragile…

  29. Shilajit

    5.5–6.0 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Adaptogenic Herb

    Pandit 2016 anchors the most relevant signal. Shilajit fits geriatric when purified resin is matched to hormones, sperm parameters, strength fatigue, bone markers, or energy tracking. The score stays bounded because most…

  30. Rucking (Weighted Walking)

    5.5–6.0 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Cardiovascular

    Two things that strongly predict independence in older adults, aerobic capacity and the ability to carry load, are exactly what a scalable loaded-walking protocol trains, and walking volume itself tracks lower mortality…

  31. Berberine

    5.5–6.0 /10 for healthy aging 6.5–7.0/10 overall Worth trying Botanical Extract (non-adaptogenic)

    The signal is conditional. Older adults may benefit metabolically, but polypharmacy raises the practical risk. Guo 2012 supports human CYP inhibition concerns relevant to statins, anticoagulants, transplant drugs, and antidepressants. That makes…

  32. Ergothioneine

    5.5–6.0 /10 for healthy aging 6.5–7.0/10 overall Worth trying Vitamin & Mineral & Nutrient

    Aging is exactly where the associations cluster. Blood ergothioneine declines after age 60 per Cheah 2016, and low levels track with frailty in Kondoh 2022 and with cognitive decline and mortality across…

  33. Urolithin A

    5.5–6.0 /10 for healthy aging 6.5–7.0/10 overall Worth trying Exogenous Metabolite

    Older adults are the best-studied human group. Liu 2022 studied adults aged 65-90 and found muscle-endurance plus biomarker signals. That makes Urolithin A more defensible when geriatric is a real bottleneck and…

  34. NMN (Nicotinamide Mononucleotide)

    5.5–6.0 /10 for healthy aging 6.0–6.5/10 overall Worth trying Exogenous Metabolite

    Zhang 2024 anchors the most relevant signal. NMN fits geriatric when raising NAD+ is likely to matter for older, metabolically stressed, or performance-tracking users. The score stays bounded because NAD+ rises more…

  35. SS-31 (Elamipretide)

    5.5–6.0 /10 for healthy aging 6.0–6.5/10 overall Worth trying Mitochondrial & Longevity Peptide

    Ehlers JP et al. 2024 is the best anchor here because it reports 176 participants randomized and missed primary endpoints for low-luminance BCVA and GA area, with exploratory ellipsoid-zone and low-luminance letter-gain…

  36. Electrolytes

    5.0–5.5 /10 for healthy aging 8.5–9.0/10 overall Top-tier Vitamin & Mineral & Nutrient

    Borra 2025 gives the most relevant evidence anchor. The existing rationale points to this narrower claim: Older adults have higher dehydration risk due to reduced thirst and medication burden. Electrolyte use should…

  37. L-Theanine

    5.0–5.5 /10 for healthy aging 7.5–8.0/10 overall Strong recommend Amino Acid

    Anxiety and sleep applications are relevant, and safety is clean, but older adults taking antihypertensives or sedatives should be more cautious. That makes L-Theanine more defensible when geriatric is a real bottleneck…

  38. Semax

    5.0–5.5 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Neuropeptide

    Older adults are the most clinically relevant population because Semax evidence concentrates around stroke and neurorecovery, including Gusev et al. 2018, but Western geriatric guidance is absent. That makes Semax more defensible…

  39. Ashwagandha

    5.0–5.5 /10 for healthy aging 6.5–7.0/10 overall Worth trying Adaptogenic Herb

    The evidence points to a plausible use case without proving a universal response. Fatima et al. 2024 is the best anchor here because it reports five randomized trials, 254 participants and reduced…

  40. Omega-3

    5.0–5.5 /10 for healthy aging 6.5–7.0/10 overall Worth trying Vitamin & Mineral & Nutrient

    Abuknesha et al. 2025 is the best anchor here because it reports 34 randomized trials, 114,326 participants and atrial fibrillation risk concentrated in high-cardiovascular-risk participants receiving high-dose EPA/DHA. Raine et al. 2024…

  41. MOTS-c

    5.0–5.5 /10 for healthy aging 6.5–7.0/10 overall Worth trying Mitochondrial & Longevity Peptide

    Geriatric relevance is stronger because endogenous MOTS-c changes with age and Reynolds 2021 tested late-life mouse physical-capacity effects. Human geriatric intervention trials remain absent. That makes MOTS-c more defensible when geriatric is…

  42. Noopept (Omberacetam)

    5.0–5.5 /10 for healthy aging 6.0–6.5/10 overall Worth trying Synthetic Nootropic (non-racetam)

    Older adults with vascular or post-stroke cognitive impairment are the only population noopept has actually been tested in, so the geriatric relevance is direct rather than inferred. The post-stroke study enrolled 60…

  43. NR (Nicotinamide Riboside)

    5.0–5.5 /10 for healthy aging 6.0–6.5/10 overall Worth trying Exogenous Metabolite

    Conze 2019 anchors the strongest signal. The existing rationale points to this narrower claim: Older adults have larger NAD+ decline, but this verified source did not support NR or NMN for preserving…

  44. Sprinting (Sprint Interval Training)

    5.0–5.5 /10 for healthy aging 6.0–6.5/10 overall Worth trying Cardiovascular

    Older adults can gain real VO2max from interval work when intensity is scaled and medically screened, and even high-intensity intervals are well tolerated under supervision in older clinical populations per Rognmo 2012.…

  45. Semaglutide

    5.0–5.5 /10 for healthy aging 6.0–6.5/10 overall Worth trying Metabolic & Incretin Peptide

    Semaglutide can help older adults with high obesity or diabetes risk, but sarcopenia risk makes casual use harder to justify. Perkovic 2024 supports kidney benefit in type 2 diabetes plus CKD, a…

  46. Ostarine (MK-2866 / enobosarm)

    5.0–5.5 /10 for healthy aging 4.5–5.0/10 overall Neutral SARM

    The one pivotal muscle trial in a non-cancer population was run specifically in healthy older men and postmenopausal women, so the aging-muscle relevance is direct rather than inferred (Dalton et al. 2011).…

  47. Rapamycin

    4.5–5.0 /10 for healthy aging 6.5–7.0/10 overall Worth trying Longevity & mTOR Drug

    Older adults are the most plausible healthy-aging group, but benefits remain surrogate-based and risks rise with comorbidity and polypharmacy.

  48. Spirulina

    4.5–5.0 /10 for healthy aging 7.5–8.0/10 overall Strong recommend Vitamin & Mineral & Nutrient

    Plausible for older adults given the cardiometabolic effects and complete protein, but dedicated trials in geriatric populations are sparse; sourcing caution matters more in vulnerable groups.

  49. Thymosin Beta-4 (Tβ4)

    4.5–5.0 /10 for healthy aging 7.0–7.5/10 overall Strong recommend Growth & Repair Peptide

    Older adults are over-represented in the indications where Tβ4 has the most data (neurotrophic keratopathy, dry eye, chronic wounds, cardiac repair), and the safety record in older trial subjects is clean. No…

  50. Ketogenic Diet

    4.5–5.0 /10 for healthy aging 6.5–7.0/10 overall Worth trying Diet & Nutrition Protocol

    Older adults need caution because sarcopenia, bone density, cardiovascular disease, medication burden, and APOE status all matter. Keto can help supervised T2D and epilepsy cases, but Mediterranean-style patterns usually have stronger preventive-care…

  51. Tirzepatide

    4.5–5.0 /10 for healthy aging 6.0–6.5/10 overall Worth trying Metabolic & Incretin Peptide

    Older adults with obesity, diabetes, OSA, or HFpEF may benefit. Frailty, sarcopenia, dehydration, constipation, polypharmacy, gallbladder risk, and bone risk are major limiters. Cap scoring unless protein, resistance training, medication review, and…

  52. Exogenous Ketones

    4.5–5.0 /10 for healthy aging 5.5–6.0/10 overall Worth trying Exogenous Metabolite

    The cardiac and brain-fuel mechanisms are most interesting in older adults, and the heart-failure work (Nielsen 2019) involves an older population, but this remains clinical and investigational rather than a general geriatric…

  53. Resveratrol

    4.5–5.0 /10 for healthy aging 5.5–6.0/10 overall Worth trying Botanical Extract (non-adaptogenic)

    Geriatric use is context-dependent. Older adults with impaired glucose tolerance or postmenopausal women with cerebrovascular/cognitive goals are the most plausible responders, supported indirectly by the impaired-glucose-tolerance pilot literature and directly by Thaung…

  54. SLU-PP-332

    4.5–5.0 /10 for healthy aging 4.5–5.0/10 overall Neutral Research Compound

    An exercise mimetic could be useful for sedentary older adults if safe, but that is exactly the population where untested safety matters most. Bonanni et al. 2025 adds human myoblast pilot context,…

  55. BPC-157

    4.0–4.5 /10 for healthy aging 7.5–8.0/10 overall Strong recommend Growth & Repair Peptide

    Healing acceleration is particularly valuable in aging populations. Older adults also face higher cancer, vascular, anticoagulation, and polypharmacy risk, so the caution bar is higher.

  56. Quercetin

    4.0–4.5 /10 for healthy aging 6.5–7.0/10 overall Worth trying Botanical Extract (non-adaptogenic)

    Older-adult relevance comes through IPF, D plus Q, BP, and cohort signals such as Hertog 1993 and Nambiar 2023. Drug interaction concerns are amplified by polypharmacy and renal aging. Senolytic class pilots…

  57. Chlorella

    4.0–4.5 /10 for healthy aging 6.5–7.0/10 overall Worth trying Vitamin & Mineral & Nutrient

    The clean safety profile and broad nutrient load make chlorella a reasonable food-based addition for older adults with borderline lipids, but no aging-population outcome trials specifically support it, so the case is…

  58. Glutathione (GSH)

    4.0–4.5 /10 for healthy aging 6.0–6.5/10 overall Worth trying Amino Acid
  59. Quinton Marine Plasma (Seawater Minerals)

    4.0–4.5 /10 for healthy aging 5.5–6.0/10 overall Worth trying Vitamin & Mineral & Nutrient

    Babiloni-Lopez 2024 gave 93 older women microfiltered seawater alongside resistance training over 32 weeks with no adverse events and blood pressure that fell in training arms; the benefit tracked the exercise, not…

  60. Curcumin

    4.0–4.5 /10 for healthy aging 5.5–6.0/10 overall Worth trying Botanical Extract (non-adaptogenic)

    The osteoarthritis and inflammation use cases are especially relevant to older adults, though the liver-injury caution matters more with polypharmacy.

  61. Retatrutide

    4.0–4.5 /10 for healthy aging 5.5–6.0/10 overall Neutral Metabolic & Incretin Peptide

    Older adults with obesity may benefit metabolically, but sarcopenia, frailty, dehydration, falls, polypharmacy, and appetite suppression make unsupervised use risky. No geriatric-specific retatrutide outcomes establish net benefit.

  62. Celebrex (Celecoxib)

    4.0–4.5 /10 for healthy aging 5.0–5.5/10 overall Neutral Anti-inflammatory & Analgesic Drug

    Widely used in older adults for arthritis, but NSAID cardiovascular, kidney, blood-pressure, and gastrointestinal risks are amplified with age. The geriatric score reflects utility plus elevated monitoring burden.

  63. Colostrum

    3.5–4.0 /10 for healthy aging 6.5–7.0/10 overall Worth trying Vitamin & Mineral & Nutrient

    Older adults may benefit indirectly from immune and gut support, but geriatric-specific evidence is limited. Duff 2014 is not enough to support a broad aging claim.

  64. Sodium Butyrate

    3.0–3.5 /10 for healthy aging 6.0–6.5/10 overall Worth trying Exogenous Metabolite

    Gut and inflammatory uses are relevant to older adults, but the sodium load matters more with kidney or blood-pressure issues.

  65. Modafinil

    3.0–3.5 /10 for healthy aging 5.5–6.0/10 overall Worth trying Eugeroic (wakefulness agent)

    Modafinil geriatric use requires lower-dose caution and closer monitoring. DailyMed 2026 recommends considering lower doses and monitoring in geriatric patients. Diagnosed sleepiness can justify use, but polypharmacy, cardiovascular disease, and slower clearance…

  66. Pine Pollen

    3.0–3.5 /10 for healthy aging 5.5–6.0/10 overall Neutral Adaptogenic Herb

    Older adults are the population where pine pollen's preclinical story is most coherent. Mao 2012 improved memory and lowered inflammatory cytokines in D-galactose-aged mice, and Polak 2025 limited bone atrophy in orchidectomized…

  67. BAM15

    3.0–3.5 /10 for healthy aging 5.0–5.5/10 overall Neutral Research Compound

    The sarcopenia work was done in aged mice, so the aging-population relevance is real but remains preclinical (Dantas et al. 2022).

  68. C15 (Pentadecanoic Acid)

    3.0–3.5 /10 for healthy aging 3.0–3.5/10 overall Caution Vitamin & Mineral & Nutrient

    No randomized C15:0 supplementation trial has tested adults over 65 against frailty, sarcopenia, cognitive decline, falls, or survival. Ciesielski 2024 (Ciesielski 2024) keeps the biology open rather than settled. Given unresolved cognitive-safety…

What each one costs

Monthly out-of-pocket cost at the most accessible legitimate channel, at the dose the score was given for. 20 of 68 are not priced yet; those cells are left blank rather than guessed.

InterventionMonthly costAt doseHow you get it
Essential Amino Acids Not priced yet
Glycine $2–$33 g oral glycineOver the counter
Whole-Body Vibration $50–$10030 Hz, roughly 0.3g, 10-20 min standingOver the counter
Creatine Monohydrate Not priced yet
Blood-Flow Restriction Training Not priced yet
Zone 2 Cardio Not priced yetOver the counter
Full-Body EMS Not priced yet
Thymosin Alpha-1 $100–$4001.6 mg subcutaneousPrescription
Ca-AKG (Calcium Alpha-Ketoglutarate) $15–$301 g/day generic Ca-AKG oralOver the counter
Spermidine $40–$901-3 mg/day oral WGEOver the counter
Norwegian 4×4 Not priced yetOver the counter
Grass-Fed Whey Protein $40–$8020-40 g proteinOver the counter
Lion’s Mane $20–$403 g/day fruiting body extractOver the counter
HRV Biofeedback $520 min/session at individual RF (4.5 to 6.5 bpm)Over the counter
Astaxanthin Not priced yet
Phosphatidylserine $20–$50300 mg/day total, split as 100 mg three times daily or 300 mg once daily with foodOver the counter
Metformin $4–$30500 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 toleratedPrescription
Epitalon $95–$1,1005-10 mg/day subcutaneousGrey market
Traditional Sauna (Finnish Dry-Heat) $5015 to 20 minutes at 80 to 100 COver the counter
Collagen Peptides $8–$402.5-10 g hydrolyzed collagen peptidesOver the counter
GHK-Cu $30–$1000.5-3% topical serum or creamOver the counter
Saffron Not priced yet
GlyNAC (Glycine + N-Acetylcysteine) $10–$30Glycine and NAC at ~100 mg/kg/day eachOver the counter
Tongkat Ali $20–$40200 mg/day Physta standardized extractOver the counter
Tesamorelin $250–$5002 mg subcutaneous daily in the eveningPrescription
TRT (Testosterone Replacement Therapy) $50–$300Clinician-selected formulation at the lowest dose likely to restore physiologic testosteronePrescription
Hyperbaric Oxygen Therapy $3,000–$6,0002.0 ATA for 90 minutes with air breaksIn clinic
Vitamin C (Ascorbic Acid) Not priced yet
Shilajit $25–$50500 mg purified shilajitOver the counter
Rucking (Weighted Walking) Not priced yet
Berberine $15–$25500 mg berberine HCl three times daily with mealsOver the counter
Ergothioneine Not priced yet
Urolithin A $50–$100500 mg/dayOver the counter
NMN (Nicotinamide Mononucleotide) $40–$100500 mg/day oralOver the counter
SS-31 (Elamipretide) $200–$5005-10 mg/day subcutaneousGrey market
Electrolytes Not priced yet
L-Theanine $3–$8200 mg L-theanine + 100 mg caffeineOver the counter
Semax $12–$60300-600 mcg/day of 0.1% sprayGrey market
Ashwagandha $15–$30300 mg KSM-66 with breakfast and 300 mg with dinnerOver the counter
Omega-3 $20–$401-2 g/day combined EPA+DHAOver the counter
MOTS-c $100–$2005-10 mg SCResearch use only
Noopept (Omberacetam) $5–$2720 mgGrey market
NR (Nicotinamide Riboside) $40–$50250-300 mg/day oralOver the counter
Sprinting (Sprint Interval Training) Not priced yet
Semaglutide $199–$3490.25 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 onwardPrescription
Ostarine (MK-2866 / enobosarm) Not priced yet
Rapamycin $15–$503 mgPrescription
Spirulina $10–$251 to 4.5 g/dayOver the counter
Thymosin Beta-4 (Tβ4) Not priced yet
Ketogenic Diet $100Standard keto, 40-50 g total carbohydrate/dayOver the counter
Tirzepatide $299–$4492.5 to 5 to 7.5 to 10 to 12.5 to 15 mgPrescription
Exogenous Ketones $38–$300Ester 10 to 25 g BHBOver the counter
Resveratrol Not priced yet
SLU-PP-332 $30–$803-5 mg/day oralResearch use only
BPC-157 $40–$80250 to 500 mcg SC 1 to 2x/day near injury siteGrey market
Quercetin $20–$50200 mg/dayOver the counter
Chlorella $10–$505-10 g/dayOver the counter
Glutathione (GSH) $20–$451,000 mg/dayOver the counter
Quinton Marine Plasma (Seawater Minerals) Not priced yet
Curcumin $15–$40500 mg curcuminoidsOver the counter
Retatrutide $130–$9602 mg, then 4 mg, then 8 mg or 12 mg weekly depending on protocol and tolerabilityResearch use only
Celebrex (Celecoxib) Not priced yet
Colostrum $60–$8020 g/day powder, split AM/PM if toleratedOver the counter
Sodium Butyrate Not priced yet
Modafinil $18–$35200 mg oral tabletPrescription
Pine Pollen $20–$455 to 10 g powder per dayOver the counter
BAM15 Not priced yet
C15 (Pentadecanoic Acid) $40–$50200 mg/dayOver the counter

Comparisons that judge healthy aging

Head-to-head reports and category rankings that name a winner on this use case.

6 more comparisons touch on healthy aging →

Questions about healthy aging

What scores highest for healthy aging?

Essential Amino Acids, at 8.5–9.0 out of 10 for healthy aging. Xie 2026 reports 9 RCTs; 496 participants; improved handgrip strength, gait speed, SPPB, and sit-to-stand with low-to-very-low certainty.

What is the cheapest thing that works for healthy aging?

Of the top-scoring options, Glycine is the least expensive at about $2 a month, scoring 8.5–9.0 out of 10 for healthy aging.

What should I be careful with for healthy aging?

C15 (Pentadecanoic Acid) scores 3.0–3.5 out of 10 for healthy aging 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 healthy aging?

68 of the 111 interventions evaluated for healthy aging score 3.0 out of 10 or better, which is the cut-off for appearing on this page.