⏱️ NAD+: HOW IV, INJECTION, NR, AND NMN DIFFER NAD+ comes up constantly, and it's sold in a bunch of different forms: IV drips, injections, and pills like NR and NMN. They aren't the same thing. Here's the simple breakdown. WHAT IT IS NAD+ is a helper molecule found in every cell in your body. Your cells need it to turn food into energy, and some of the enzymes that repair DNA depend on it too. Research suggests NAD+ levels drop in some tissues as we get older, which is why it gets so much attention for aging. WHAT PEOPLE USE IT FOR • Energy and fighting fatigue • Healthy-aging and longevity goals • Recovery and "brain fog" support THE DIFFERENT FORMS, IN PLAIN ENGLISH • NR (nicotinamide riboside) and NMN (nicotinamide mononucleotide): pills. These aren't NAD+ itself. They're building blocks, forms of vitamin B3, that your body turns into NAD+. • IV NAD+: NAD+ itself, dripped straight into a vein at a clinic. • Injected NAD+: NAD+ itself, injected under the skin with a small syringe. • Oral NAD+ pills: NAD+ is a big molecule, and when you swallow it, much of it gets broken down in the gut before it reaches your blood. That's why the pill research focuses on NR and NMN instead. WHAT THE RESEARCH ACTUALLY SHOWS • NR and NMN: Several small human trials show these pills reliably raise NAD+ levels in the blood. Whether that turns into real health benefits is less clear. A small 2021 trial of NMN in women with prediabetes found better muscle insulin sensitivity, but many other trials found few measurable changes. Evidence level: Moderate for raising NAD+, Early for actual benefits. • IV NAD+: Only small pilot studies. Clinics usually run drips slowly, often over a few hours, because faster drips are commonly linked to flushing, nausea, cramping, or chest tightness. Evidence level: Very Early. • Injected NAD+: Almost no published human research. Most of what's known comes from community experience. Evidence level: Anecdotal. No form of NAD+ is FDA-approved to treat aging or fatigue.

💪 ANASTROZOLE: WHAT IS IT? If you spend any time in TRT circles, you'll hear about "AIs" and keeping estrogen in check. Anastrozole is the one that comes up most. Here's what it actually is in plain English. WHAT IT IS Anastrozole (brand name Arimidex) is a prescription pill called an aromatase inhibitor, or AI. Aromatase is the enzyme that turns some testosterone into estradiol, the main form of estrogen. Anastrozole blocks that enzyme, so less estradiol gets made. It was approved by the FDA in the 1990s to treat hormone-sensitive breast cancer in women after menopause. That's still its approved use. It is not FDA-approved for men or for TRT. WHAT PEOPLE USE IT FOR • Breast cancer treatment in postmenopausal women (the approved use) • Off-label in men on TRT to lower estradiol when it rises along with testosterone • Sometimes discussed for gynecomastia (male breast tissue) or as a way to nudge natural testosterone up WHAT THE RESEARCH ACTUALLY SHOWS • For breast cancer, the evidence is strong. Large trials made aromatase inhibitors a standard treatment. • In men, estrogen isn't the enemy. Men need some estradiol for bones, sex drive, erections, and body composition. • A 2013 study in the New England Journal of Medicine lowered men's hormones on purpose and then added testosterone back, with or without an aromatase inhibitor. When estradiol was kept low, men gained more body fat and had worse sex drive and erectile function, even with testosterone replaced. • In a year-long trial in older men with low testosterone, anastrozole did raise testosterone, but spine bone density went down instead of up. • In a placebo-controlled trial in teenage boys with gynecomastia, anastrozole didn't work better than placebo. Evidence level: Strong for breast cancer. For routine use on TRT, the evidence points toward caution, not benefit. COMMON QUESTIONS Do guys on TRT need an AI? Not routinely. The Endocrine Society's testosterone guideline doesn't recommend aromatase inhibitors as a treatment for low T. Some clinicians still use them in specific cases, which is a prescriber's call.

🌸 CREATINE FOR WOMEN: NOT JUST A GYM SUPPLEMENT Creatine has a bodybuilder reputation. But it is one of the most studied supplements there is, and more of that research now looks at women. WHAT IT IS Creatine is a natural compound your body makes from amino acids (the building blocks of protein). You also get some from meat and fish. Most of it is stored in your muscles. It helps them quickly refill ATP (the cell's energy currency) during short, hard efforts like lifting or sprinting. On average, women store less creatine than men. People who eat little or no meat also tend to store less. WHY WOMEN ASK ABOUT IT • Getting stronger and keeping muscle • Protecting muscle and bone with age, especially around menopause • Worry about bloating or "bulking up" • Mood and energy • Whether it is safe for kidneys or hair WHAT THE RESEARCH SHOWS • Humans: many trials show creatine plus strength training builds more strength and lean mass (muscle and other non-fat tissue) than training alone. This includes trials in women and in older adults. The International Society of Sports Nutrition (ISSN) calls it one of the best-supported supplements, and its 2023 position stand on female athletes includes it. • Humans, bone: a 2-year trial in postmenopausal women did not find better bone density with creatine. Some bone-shape measures looked better. This is still early. • Humans, mood: a small 2012 trial in women with depression who were already on an antidepressant found faster improvement when creatine was added. It needs to be repeated in larger studies. • Animals: animal studies are exploring creatine in pregnancy and the developing brain. That is not human proof. • Lab: creatine works through the phosphocreatine system, a quick backup energy store inside cells. Evidence level: Strong for strength and lean mass with training (many human trials, ISSN). Early for bone and mood (few, small human studies). WOMEN-SPECIFIC NOTES • Your cycle: researchers think estrogen and progesterone changes may affect how the body handles creatine. This is still early.

Livagen is the "liver" name on most bioregulator lists. It gets talked about as a liver and anti-aging peptide, but the research behind it is small and mostly done in a dish. Here's the simple version. WHAT IT IS Livagen is a short lab-made peptide of four amino acids: lysine, glutamic acid, aspartic acid, and alanine (written Lys-Glu-Asp-Ala, or KEDA). It comes from the Khavinson bioregulator program in St. Petersburg, Russia, the same group behind Epitalon, Cortagen, and Cardiogen. It was designed as a small synthetic version of the idea behind a liver extract from calves that the same group studied. WHAT PEOPLE USE IT FOR • Liver support ideas in the longevity community • "Aging cells" and gene-activity conversations • Stacking talk with other Khavinson bioregulators WHAT THE RESEARCH ACTUALLY SHOWS • Human cells in a dish: the best-known study (Khavinson et al., 2002) took white blood cells from older people and exposed them to Livagen in the lab. The authors reported that tightly packed "switched off" parts of the DNA loosened up and some genes became more active. They read that as reversing an age-related change in the cells. • Animal tissue: rat liver and other tissue samples grown in a dish responded to Livagen in a way the authors called tissue-specific. • Animal liver models: a 2020 review from the same group describes Livagen helping liver function and immune markers in animals with induced liver damage. • Humans: there is no published, controlled human trial of Livagen taken as a treatment, and nothing is registered on ClinicalTrials.gov. Evidence level: Very Early. Cell and animal studies, nearly all from one research lineage, with no independent replication and no human outcome data. COMMON QUESTIONS Is Livagen a liver medication? No. It is not approved in the US for any liver condition, and it has not been tested against real liver disease in people. Is it the same as Epitalon? No. They look similar on paper but the amino acids are different: Epitalon is AEDG and Livagen is KEDA.

This is the stack I reach for when sleep gets light, choppy, or I'm waking up beat up. The goal is deeper sleep and a reset body clock without feeling knocked out or groggy the next day. THE STACK • DSIP: 250 mcg, 1–3 hours before bed, 5 days on / 2 days off, 8 weeks on / 8 weeks off • Sermorelin: 250 mcg, PM (before bed), Monday–Friday, 8 weeks on / 8 weeks off • Epitalon: 2 mg, PM, every day, 20 days in a row, 3x per year • Selank: 1 mg, AM, 2–3 days per week, 8 weeks on / 8 weeks off WHY I USE EACH ONE • DSIP: I use it to get more deep, delta-wave sleep without forcing sedation. • Sermorelin: I use it to boost the natural growth hormone pulse that happens during deep sleep, which is where a lot of recovery comes from. • Epitalon: I use it to help the pineal gland make its own melatonin again and get my body clock back on track. • Selank: I use it to calm the anxious, racing-thoughts side of bad sleep. HOW TO RUN IT • Monday–Friday nights: DSIP 250 mcg 1–3 hours before bed, plus Sermorelin 250 mcg before bed. • Saturday and Sunday: off DSIP and Sermorelin. • Selank 1 mg in the morning on 2–3 days a week, like Monday, Wednesday and Friday. • Epitalon 2 mg every evening for the first 20 days in a row, then stop until the next round (3 rounds a year). • Run DSIP, Sermorelin and Selank for 8 weeks, then take 8 weeks off. • Rough timeline from the lesson: falling asleep faster in week 1, deeper sleep by weeks 2–3, and waking up refreshed by weeks 3–4. TIPS • Cut caffeine and stimulant-heavy nootropics after 2 PM while you're on this. • Dark, cool room and no screens before bed. Good sleep habits make the peptides work better. • Keep your evening timing consistent so your body gets used to the routine. Not medical advice; talk with your clinician. Full breakdown: https://www.skool.com/peptideindex/classroom/da778817?md=9cc03c854f4b4a29a05db193c7b79993 We'll keep walking through my favorite stacks one at a time.