Ancillaries, pharma longevity tools, PCT and AI options, hair and sexual-health prescriptions, and supportive compounds — the supporting cast that commonly appears alongside peptide and SARM protocols. Each entry has mechanism, typical protocols, and primary citations.
43 compounds listed, ordered A–Z.
Beta-Carboline | Dopaminergic Neurorestorative
Half-life: Not well characterized in humans
Withania somnifera | Adaptogenic Herb for Stress & Recovery
Half-life: Not well-characterised for the whole extract; individual withanolides ~6-12 hours
Plant Alkaloid | Natural Glucose & Lipid Management
Half-life: ~4 hours
Actoprotector | Dopamine Upregulation & Adaptive Energy
Half-life: ~11 hours
Topical Androgen Receptor Inhibitor | Acne & Hair Loss
Half-life: Short topical (local action; rapidly metabolized to cortexolone)
Beta-2 Agonist | Thermogenic Fat Loss
Half-life: ~36 hours
Phosphocreatine Precursor | Most-Researched Sports Supplement
Half-life: ~3 hours (plasma); muscle saturation reached over 4 weeks at maintenance dose
SSRI | Premature Ejaculation Treatment
Half-life: ~1.5 hours
Tricyclic Antihistamine | Ultra-Low Dose Sleep Aid
Half-life: ~15 hours
Dual 5-Alpha Reductase Inhibitor | Hair Loss & BPH
Half-life: ~5 weeks (extremely long; active metabolite accumulation over months)
Phytoecdysteroid | Natural Anabolic & Performance Enhancer
Half-life: ~4-9 hours
Cholesterol Absorption Inhibitor | Lipid Management On Cycle
Half-life: ~22 hours
5-Alpha Reductase Inhibitor | DHT Blocker for Hair Loss & BPH
Half-life: 6-8 hours (DHT suppression persists ~24 hours)
Antifungal | Topical Anti-Androgen for Hair Loss
Half-life: Topical application stays local with minimal systemic absorption
Thyroid Hormone | Metabolic Optimization
Half-life: ~1 day
Chelated Magnesium | Sleep, Recovery & Cardiovascular Support
Half-life: ~30 hours (whole-body); urinary excretion is the primary regulator
Pineal Hormone | Sleep & Circadian Rhythm Regulator
Half-life: ~30-50 minutes (immediate release); ~3-4 hours (sustained release)
Metabolic Modulator | Endurance & Cardioprotection
Half-life: ~4-6 hours
Biguanide | AMPK Activator & Longevity Research
Half-life: ~5 hours
Mitochondrial Electron Carrier | Cognitive & Neuroprotection
Half-life: ~5-6 hours
Vasodilator | Hair Growth Stimulation
Half-life: ~4 hours (oral); topical effects persist significantly longer due to local tissue retention
Eugeroic | Wakefulness & Cognitive Enhancement
Half-life: ~12-15 hours
Mucolytic | Glutathione Precursor | FDA-Approved Drug
Half-life: ~6 hours (oral); plasma cysteine elevation persists ~12 hours
Opioid Antagonist | Low-Dose Anti-Inflammatory & Immune Modulation
Half-life: ~4 hours
NAD+ Precursor | Cellular Energy & Longevity
Half-life: ~2-3 hours (oral)
Nootropic Peptide | Memory & Neuroprotection
Half-life: ~30 minutes (oral), active metabolite cycloprolylglycine persists longer
5-HT3 Antagonist | Anti-Nausea On Cycle
Half-life: ~4 hours
Racetam Nootropic | Logic, Processing Speed & Technical Work
Half-life: ~8 hours
GABA-B Agonist | Anxiolytic & Sleep Aid
Half-life: ~5 hours
Racetam Nootropic | Cognitive & Physical Performance
Half-life: ~3-5 hours
HMG-CoA Reductase Inhibitor | Low-Interaction Statin
Half-life: ~12 hours
MPC Inhibitor | Hair Follicle Stem Cell Activation
Half-life: Topical application; exact pharmacokinetics not published
Beta Blocker | Heart Rate & Anxiety Management
Half-life: ~4-5 hours
mTOR Inhibitor | Longevity & Immunosuppression
Half-life: ~62 hours
HMG-CoA Reductase Inhibitor | Statin for Lipid Management
Half-life: ~19 hours
Topical Anti-Androgen | Experimental Hair Loss Treatment
Half-life: ~1 hour topically (very short systemic half-life)
PDE5 Inhibitor | Erectile Function & Pulmonary Hypertension
Half-life: ~3-5 hours
PDE5 Inhibitor | Erectile Function & Blood Flow
Half-life: ~17.5 hours
Conditionally-Essential Amino Sulfonic Acid | Cardio & Mitochondrial Support
Half-life: ~1 hour (plasma) but tissue stores are large and slowly turn over
Angiotensin II Receptor Blocker | Cardiac Protection On Cycle
Half-life: ~24 hours
Serotonin Antagonist & Reuptake Inhibitor | Sleep Aid
Half-life: ~5-9 hours
Retinoid | Skin Rejuvenation & Anti-Aging
Half-life: 0.5-2 hours (topical, local skin metabolism)
Fast-Digesting Dairy Protein | Complete Amino Acid Profile
Half-life: Plasma amino-acid peak at ~60-90 minutes post-ingestion; aminoacidemia returns to baseline within 3-4 hours