The PepSteady blog
Plain-English peptide guides
80 articles on reconstitution, GLP-1s, safety, the law and everyday life on a protocol.
What Are Peptides? A Plain-English Guide
What are peptides? A plain-English guide to what peptides are, how they work as body signals, which are FDA-approved medicines, and what is still research.
Peptide BasicsPeptides vs. Proteins vs. Amino Acids: What's the Difference
Peptides vs. proteins vs. amino acids explained simply: how the building blocks link up, why size and shape matter, and what it means for food and medicine.
Peptide BasicsHow Peptide Therapy Works in the Body
How peptide therapy works in the body: receptors, signals, half-life and why most peptides are injected, explained in plain English with approved examples.
Peptide BasicsPrescription Peptides vs. "Research Use Only" Peptides
Prescription peptides vs. research use only peptides: what the labels mean, how FDA treats RUO sellers, where compounding stood in 2026, and safer steps.
Peptide BasicsThe Peptides People Ask About Most in 2026
The peptides people ask about most in 2026, from semaglutide and tirzepatide to BPC-157 and retatrutide, with each one's FDA status in plain English.
Peptide BasicsQuestions to Ask Before Starting Any Peptide
Questions to ask before starting any peptide: status, evidence, side effects, interactions, sourcing, cost and follow-up. A checklist for your provider.
Peptide BasicsHow to Talk to Your Doctor About Peptides
How to talk to your doctor about peptides: how to prepare, what to bring, words to use, and what to do if you disagree. Simple scripts for your visit.
Peptide BasicsPeptide Myths vs. Facts
Peptide myths vs. facts: the truth about natural peptides, research use only labels, GLP-1 medicines, compounding and side effects, with current sources.
Reconstitution & InjectionHow to Reconstitute a Peptide Vial, Step by Step
How to reconstitute a peptide vial step by step: clean prep, the diluent your pharmacist specifies, gentle mixing, labeling and storage for prescribed vials.
Reconstitution & InjectionHow Much Bacteriostatic Water Should You Add? Understanding Concentration
How much bacteriostatic water should you add? Learn how water volume sets concentration and how to turn a prescribed dose into mL and syringe units.
Reconstitution & Injectionmg vs. mcg vs. IU: Peptide Units Explained
Peptide units explained in plain English: what mg, mcg and IU mean, how to convert mg to mcg, and why syringe units are a different thing entirely.
Reconstitution & InjectionHow to Read a U-100 Insulin Syringe
Learn how to read a U-100 insulin syringe: what the unit lines mean, how 100 units equals 1 mL, and how 0.3, 0.5 and 1 mL barrels are marked differently.
Reconstitution & InjectionU-100 vs. U-40 Syringes: Why Mixing Them Up Is Dangerous
U-100 vs U-40 syringes: learn how their unit scales differ, why the same line holds 2.5 times more liquid on a U-40, and how to avoid a dangerous mix-up.
Reconstitution & InjectionReconstitution Math: 10 Worked Examples
Ten step-by-step peptide reconstitution math examples: concentration, mL to draw and U-100 syringe units, with a U-40 warning and a reverse check.
Reconstitution & InjectionBacteriostatic Water vs. Sterile Water
Bacteriostatic water vs sterile water: what each contains, why benzyl alcohol matters, single vs multi-dose vials, and which one your medicine needs.
Reconstitution & InjectionHow to Draw From a Vial Without Air Bubbles
Learn how to draw from a vial without air bubbles: prepare the syringe, equalize pressure, draw slowly, and tap bubbles out so your measured dose is accurate.
Reconstitution & InjectionSubcutaneous Injection Basics
Subcutaneous injection basics in plain English: where to inject, how to pinch the skin, 45 vs 90 degree angles, safe disposal, and when to call your doctor.
Reconstitution & InjectionInjection Site Rotation: Why It Matters and How to Do It
Injection site rotation helps prevent lumps, bruising and uneven absorption. Learn why it matters and simple rotation patterns for subcutaneous shots.
GLP-1 MedicationsSemaglutide Explained: How It Works
Semaglutide explained in plain English: how this GLP-1 medicine works on appetite and blood sugar, its FDA-approved brands and uses, and key safety points.
GLP-1 MedicationsTirzepatide Explained: How It Works
Tirzepatide explained in plain English: how this dual GIP and GLP-1 medicine works, what Mounjaro and Zepbound are approved for, and key safety facts to know.
GLP-1 MedicationsSemaglutide vs. Tirzepatide: Side-by-Side Comparison
Semaglutide vs tirzepatide side by side: how they work, FDA-approved brands and uses, head-to-head trial results, side effects and questions to ask.
GLP-1 MedicationsWhat Is a GLP-1 Agonist?
What is a GLP-1 agonist? A plain-English guide to how these medications work, which ones are FDA-approved in 2026, and what they are used for.
GLP-1 MedicationsCommon GLP-1 Side Effects and How People Manage Them
Learn the most common GLP-1 side effects, like nausea and constipation, practical ways people manage them, and the warning signs that need a doctor.
GLP-1 MedicationsGLP-1 Titration: Why Doses Start Low
GLP-1 titration explained: why semaglutide and tirzepatide doses start low and rise in steps, what the labels say, and how to work with your prescriber.
GLP-1 MedicationsBrand-Name vs. Compounded GLP-1s: What to Know
Brand-name vs. compounded GLP-1s: how they differ, where FDA rules stand in 2026 after the shortages ended, and how to stay safe if you use either.
GLP-1 MedicationsRetatrutide: What We Know So Far
Retatrutide explained: how this triple-hormone drug works, what 2026 phase 3 TRIUMPH results show, its side effects, and why it is not FDA-approved yet.
GLP-1 MedicationsLiraglutide vs. Semaglutide
Liraglutide vs. semaglutide compared: daily vs. weekly dosing, brand names, FDA-approved uses, the STEP 8 head-to-head results, side effects and cost.
GLP-1 MedicationsOral Semaglutide vs. Injections
Oral semaglutide vs. injections: how the Wegovy pill and Rybelsus compare to weekly shots, how to take the tablet correctly, results, side effects and tips.
GLP-1 MedicationsWhat Happens When You Stop a GLP-1
What happens when you stop a GLP-1 like semaglutide or tirzepatide? What studies show about weight regain, appetite and health markers, and how to plan ahead.
GLP-1 MedicationsGLP-1s and Muscle Loss: Protecting Lean Mass
GLP-1s and muscle loss: how much lean mass people lose on semaglutide or tirzepatide, why it matters, and how protein and strength training help protect it.
GLP-1 MedicationsHow to Track Your GLP-1 Progress Beyond the Scale
Track your GLP-1 progress beyond the scale: waist size, strength, labs, blood pressure, side effects and how you feel, with a simple weekly tracking routine.
GLP-1 MedicationsMissed a GLP-1 Dose? What the Labels Say
Missed a GLP-1 dose? See what the official FDA labels for Ozempic, Wegovy, Mounjaro, Zepbound, Trulicity and more say about missed doses and timing windows.
Growth Hormone PeptidesGrowth Hormone Secretagogues: A Beginner's Overview
A plain-English guide to growth hormone secretagogues: GHRH analogs vs. ghrelin mimetics, which are FDA-approved, what research shows, and the known risks.
Growth Hormone PeptidesTesamorelin: The FDA-Approved GHRH Analog
Tesamorelin (Egrifta WR) is an FDA-approved GHRH analog for HIV-associated abdominal fat. Learn how it works, what trials showed, and its label warnings.
Growth Hormone PeptidesSermorelin: History and Current Status
Sermorelin was once FDA-approved as Geref, then discontinued. Learn its history, how it works, the limited evidence, and its current status in the US.
Growth Hormone PeptidesCJC-1295 and Ipamorelin: What the Research Shows
CJC-1295 and ipamorelin are popular growth hormone peptides that are not FDA-approved. Here is what human research shows, the FDA's safety concerns, and gaps.
Growth Hormone PeptidesGHRP-2 vs. GHRP-6
GHRP-2 vs. GHRP-6: how these growth hormone-releasing peptides differ in appetite, cortisol and research, plus their FDA status and safety concerns.
Growth Hormone PeptidesMK-677 (Ibutamoren): Is It Really a Peptide?
MK-677 (ibutamoren) is sold as a peptide, but it is an oral small molecule. Learn how it works, what trials found, and why it is not FDA-approved.
Growth Hormone PeptidesIGF-1 Basics: Why Doctors Check Your Labs
IGF-1 basics in plain English: what this growth hormone marker is, why doctors check it during GH-related treatment, and what high or low results mean.
Recovery & Immune PeptidesBPC-157: What the Research Actually Says
BPC-157 research explained: mostly animal studies, very little human data, no FDA approval, and where its 2026 compounding status stands in plain English.
Recovery & Immune PeptidesTB-500 and Thymosin Beta-4 Explained
TB-500 and thymosin beta-4 are not the same thing. Learn how they differ, what human research exists, FDA status in 2026, and why TB-500 safety is unknown.
Recovery & Immune PeptidesGHK-Cu Copper Peptide for Skin and Hair
GHK-Cu copper peptide shows up in serums and clinic menus. Here is what the research on skin and hair actually shows, plus its current FDA status in 2026.
Recovery & Immune PeptidesKPV and LL-37: Immune Peptides 101
KPV and LL-37 are immune peptides with interesting lab research but little human evidence. Learn what they are, what studies show and their 2026 FDA status.
Recovery & Immune PeptidesThymosin Alpha-1: Approved Abroad, Not in the US
Thymosin alpha-1 is approved in dozens of countries but not by the FDA. Learn what it is, what studies show and why US approval never came so far.
Recovery & Immune PeptidesPeptides and Athletes: What WADA Prohibits
Which peptides does WADA prohibit? A plain-English guide to the 2026 Prohibited List for athletes, covering BPC-157, TB-500, GH peptides, MOTS-c and GLP-1s.
Longevity & CognitiveEpitalon and Longevity Claims
Epitalon is sold as a telomere-lengthening longevity peptide. Here is what the research actually shows, where the claims overreach and its 2026 FDA status.
Longevity & CognitiveMOTS-c and Mitochondrial Peptides
MOTS-c, humanin and SS-31 are called mitochondrial peptides. Learn what each one is, what the research shows and which one actually has FDA approval in 2026.
Longevity & CognitiveSelank and Semax: Nootropic Peptides Explained
Selank and Semax are nootropic peptides used in Russia but not FDA-approved. Learn what they are, what research shows and their US status in 2026.
Longevity & CognitiveDSIP and Sleep: Separating Hype From Evidence
DSIP, or delta sleep-inducing peptide, is sold as a sleep aid. Here is what decades of research really show, why results are mixed and its FDA status in 2026.
Longevity & CognitiveNAD+ Is Not a Peptide: What It Actually Is
NAD+ is often sold alongside peptides, but it is not a peptide. Learn what NAD+ is, what NR and NMN research shows and what to know before trying NAD+ shots.
Longevity & CognitiveHow to Evaluate Anti-Aging Peptide Claims
Learn how to evaluate anti-aging peptide claims with a simple checklist covering study type, FDA status, sources and red flags before you spend money.
Safety & StorageHow to Store Peptides: Fridge, Freezer and Travel
How to store peptides and peptide medications in the fridge, freezer or on the go. Learn why your pharmacy label rules, plus practical travel and heat tips.
Safety & StorageHow Long Does a Mixed Peptide Vial Last?
How long does a mixed peptide vial last? Learn what a beyond-use date is, why your pharmacy label sets the limit, and how to track your vial's dates safely.
Safety & StorageSigns a Vial May Be Contaminated or Degraded
Learn the signs a vial may be contaminated or degraded, from cloudiness to damaged stoppers, why many problems are invisible, and what to do before you inject.
Safety & StorageSharps Disposal: How to Throw Away Needles Safely
Sharps disposal made simple: how to throw away needles safely using FDA's two-step method, what to do without a sharps container, and local drop-off options.
Safety & StorageTraveling With Injectable Medications
Traveling with injectable medications? Learn current TSA rules for liquids, syringes and ice packs, plus packing tips to keep your medicine cool and safe.
Safety & StorageInjection Site Reactions: What's Normal and What Isn't
Injection site reactions explained: what mild redness, itching or bruising usually means, warning signs of infection or allergy, and when to call your doctor.
Safety & StorageWhen to Call Your Doctor or 911
Know when to call your doctor or 911 while using peptide or GLP-1 medications. Clear emergency warning signs, Poison Control guidance and what to have ready.
Safety & StorageDrug Interactions to Ask Your Pharmacist About
Drug interactions to ask your pharmacist about when using peptide or GLP-1 medications, from insulin and birth control pills to supplements and alcohol.
Safety & StorageHow to Spot Counterfeit Medications
Learn how to spot counterfeit medications, including fake GLP-1 pens, online pharmacy red flags, packaging checks, and how to report a suspect product.
Legal & FDAAre Peptides Legal in the US?
Are peptides legal in the US? A plain-English look at FDA-approved peptides, compounding rules, the 2026 FDA peptide review and 'research use only' products.
Legal & FDA503A vs. 503B Compounding Pharmacies Explained
503A vs. 503B compounding pharmacies explained in plain English: who regulates each, how prescriptions work, quality rules, and what changed for GLP-1s.
Legal & FDAFDA Bulk Drug Substance Categories Explained
FDA bulk drug substance categories explained: what Category 1, 2 and 3 mean for compounded peptides, plus the 2026 changes for BPC-157 and others.
Legal & FDAHow to Verify a Telehealth Provider Is Legit
How to verify a telehealth provider is legit: check the prescriber's license, the pharmacy, the visit process and the marketing before you share data or pay.
Legal & FDABuying Medications Online Safely
Buying medications online safely starts with a few checks: a valid prescription, a state-licensed U.S. pharmacy and NABP verification. Here is how to do it.
Nutrition & LifestyleHow Much Protein Do You Need on a GLP-1?
How much protein do you need on a GLP-1? Learn the ranges experts suggest during weight loss, how to do the math for your body, and easy ways to reach it.
Nutrition & LifestyleHigh-Protein Foods for a Small Appetite
High-protein foods for a small appetite: easy, compact options with the most protein per bite, plus snack ideas and tips for low-appetite days on a GLP-1.
Nutrition & LifestyleHydration on GLP-1 Medications
Hydration on GLP-1 medications matters because nausea, vomiting and diarrhea can lead to dehydration and kidney problems. Learn the signs and simple habits.
Nutrition & LifestyleStrength Training While Losing Weight
Strength training while losing weight helps protect muscle, strength and balance. Learn what guidelines recommend and how to start safely, even as a beginner.
Nutrition & LifestyleFiber, Constipation and GLP-1s
Fiber, constipation and GLP-1s: why these medications can slow digestion, how much fiber adults need, and gentle food and habit changes that help.
Nutrition & LifestyleEating Out on a GLP-1
Eating out on a GLP-1 can still be enjoyable. Learn how to order for a smaller appetite, put protein first, handle big portions and avoid side effects.
Nutrition & LifestyleAlcohol and GLP-1 Medications
Can you drink alcohol on a GLP-1 medication? What labels and health agencies say about blood sugar, pancreatitis, dehydration and stomach side effects.
Nutrition & LifestyleSleep, Stress and Weight Loss
How sleep and stress affect weight loss, plus simple, realistic habits for better rest and calmer days while on a GLP-1 or any healthy weight plan.
Nutrition & LifestyleMeal Prep for Low-Appetite Days
Meal prep for low-appetite days on a GLP-1: small high-protein portions, easy snack boxes, safe storage times and a simple weekly plan you can repeat.
Tracking & ToolsWhy Tracking Your Doses Improves Consistency
Why tracking your doses improves consistency: how a simple dose log prevents missed or double doses, helps with side effects and makes doctor visits easier.
Tracking & ToolsHow to Set Medication Reminders That Actually Work
How to set medication reminders that actually work: pick the right time, add a backup alert, link doses to habits and handle travel and weekly shots.
Tracking & ToolsWhat to Bring to Your Follow-Up Appointment
What to bring to your follow-up appointment on peptide or GLP-1 therapy: medicine list, dose log, side effect notes, measurements and your questions.
Tracking & ToolsUsing Apple Health and Wearables to Track Progress
Using Apple Health and wearables to track progress on peptide or GLP-1 therapy: what to measure, how accurate trackers are, and how to share data wisely.
Tracking & ToolsBudgeting for Peptide Therapy: Cost per Dose
Budgeting for peptide therapy: how to work out cost per dose from vial size and your prescribed dose, add supplies, and plan monthly costs without surprises.
Tracking & ToolsYour First 30 Days on a New Protocol: A Tracking Checklist
Your first 30 days on a new protocol: a week-by-week tracking checklist for doses, side effects, injection sites, supplies and questions for your prescriber.
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