Research guide
From a laboratory model to people.
Different research settings answer different questions. Progress is not guaranteed.
7 min read
Evidence
A result is the start of a question.
Learn how to read research, then look closely at the studies behind our stories.
Understand research.
Research guide
How clinical trials compare treatments.
A useful result needs a useful comparison—not just a before-and-after change.
6 min read
Research guide
How to read a result.
Keep the outcome, the denominator, the time period and the uncertainty together.
7 min read
Research guide
What approval means—and does not mean.
A decision about a defined product and use is not a universal endorsement of a molecule.
6 min read
Question guide
What does human research on BPC-157 actually show?
A close reading of the small human studies behind BPC-157 claims, and why laboratory promise is not clinical proof.
5 min read
Question guide
Are peptide stacks safer or more effective than one peptide?
Why combining marketed peptides creates new questions about formulation, interactions and evidence instead of answering them.
2 min read
Question guide
GHK-Cu topical cream versus injectable peptide: what changes?
Route, formulation and product quality change the question; evidence for one GHK-Cu preparation cannot be moved automatically to another.
3 min read
Question guide
CJC-1295 and ipamorelin: are they the same kind of peptide?
A mechanism-level comparison of two growth-hormone-axis peptides, with the evidence and safety gaps kept separate from online stack claims.
4 min read
Question guide
Do protein powders build muscle?
What protein powders can add to resistance training, what the trials actually measure, and why a supplement is not a shortcut to muscle growth.
3 min read
Question guide
How do you read a supplement label?
A practical way to read serving sizes, ingredient amounts, claims and quality signals without treating a label as proof of benefit.
4 min read
Question guide
Is creatine safe?
What the strongest creatine evidence covers, which safety questions remain personal or product-specific, and why a common supplement still needs context.
3 min read
Question guide
Can vitamin D supplements prevent disease?
What vitamin D does in the body, where supplementation helps prevent deficiency, and why broad prevention claims need trials that match the outcome.
4 min read
Question guide
Ozempic, Wegovy and Rybelsus: what is the difference?
A guide to the different semaglutide products, how they are taken and what they are approved for.
4 min read
Question guide
GLP-1 and GIP medicines: what do the signals mean?
A mechanism-first explanation of GLP-1 and GIP, followed by the clinical questions a receptor story cannot answer on its own.
2 min read
Question guide
How should you read an average weight-loss result?
A practical guide to percentages, comparators, time points, missing data and why an average trial result is not a personal forecast.
2 min read
Question guide
Can sunlight, heat or humidity damage medicines and vitamins?
Why a sunny windowsill, a hot car and a damp bathroom raise different product-specific questions.
3 min read
Question guide
Does this medicine or supplement need a fridge?
How to interpret refrigeration, freezing and power-cut questions without assuming every product follows the same rule.
4 min read
Question guide
Does the expiry date tell you whether a product is still usable?
Understand labelled dates, opened products, packaging and why appearance alone cannot establish quality.
2 min read
Question guide
Can you take medicines and medical supplies through airport security?
How to distinguish screening, airline conditions, product storage and destination law.
5 min read
Question guide
How do you travel with medicine that needs refrigeration?
Plan for the actual product label, the complete journey, screening and delays.
3 min read
Question guide
Can you take prescription medicines across an international border?
Check the departure, transit and destination rules for the exact medicine, traveller and amount.
3 min read
Country travel guide
Can you travel to Japan with medicines?
Official starting points for checking personal medicines, controlled substances and import requirements for Japan.
4 min read
Country travel guide
Can you travel to Australia with medicines?
Official starting points for checking personal medicines, controlled substances and import requirements for Australia.
3 min read
Country travel guide
Can you travel to Canada with medicines?
Official starting points for checking personal medicines, controlled substances and import requirements for Canada.
4 min read
Country travel guide
Can you travel to the United Kingdom with medicines?
How to check personal medicines, controlled substances and border rules for the United Kingdom.
4 min read
Country travel guide
Can you travel to the United States with medicines?
How to check personal medicines, controlled substances and border rules for the United States.
3 min read
Country travel guide
Can you travel to Italy with medicines?
How to check personal medicines, controlled substances and border rules for Italy.
4 min read
Country travel guide
Can you travel to Spain with medicines?
How to check personal medicines, controlled substances and border rules for Spain.
4 min read
Product storage guide
How should Ozempic, Wegovy and semaglutide tablets be stored?
A comparison of specific 2026 US labels; the right instructions depend on the product and presentation.
3 min read
Product storage guide
How should Mounjaro and Zepbound be stored?
What the 2026 US labels say for specific pens and vials, and why the presentations must be checked separately.
3 min read
Country travel guide
Can you travel to France with medicines?
Official starting points for personal medicines, controlled substances and border rules for France.
4 min read
Country travel guide
Can you travel to Germany with medicines?
Official starting points for personal medicines, controlled substances and border rules for Germany.
3 min read
Country travel guide
Can you travel to the United Arab Emirates with medicines?
Official starting points for personal medicines, controlled substances and border rules for the United Arab Emirates.
3 min read
Country travel guide
Can you travel to Thailand with medicines?
Official starting points for personal medicines, controlled substances and border rules for Thailand.
3 min read
Country travel guide
Can you travel to Mexico with medicines?
Official starting points for personal medicines, controlled substances and border rules for Mexico.
3 min read
Product storage guide
Do probiotics need to be refrigerated?
How to read the label, understand live counts and respond to a temperature excursion.
4 min read
Practical supplement guide
Should you take vitamins with food?
How food, formulation and other medicines can change the answer, with examples of vitamin D, iron and calcium.
4 min read
Practical supplement guide
Can supplements interact with medicines or each other?
How to spot overlapping ingredients, prepare a useful list and ask about interactions.
6 min read
Product storage guide
How should research peptides and peptide stacks be stored?
Why a seller’s storage claim is not proof of stability, sterility or permission to travel.
4 min read
Food storage guide
How should protein powder, shakes and bars be stored?
The answer changes when a dry powder is mixed or a sealed drink is opened.
5 min read
Supplement storage guide
How should vitamins and mineral supplements be stored?
Sunlight, bathrooms, refrigeration and expiry dates depend on the product in the bottle.
5 min read
Supplement storage guide
Does fish oil or omega-3 need to be refrigerated?
How packaging, oxidation and the product label affect storage decisions.
3 min read
Supplement storage guide
How should creatine powder and mixed drinks be stored?
What dry storage, moisture and mixing mean—and what experiments cannot tell you.
3 min read
Beginner’s guide
Why does the way a medicine or supplement enters the body matter?
A beginner’s guide to oral, topical and injectable products.
2 min read
Practical nutrition guide
How do you compare protein drinks, bars and powders?
A practical way to read the whole label and compare what you will actually consume.
4 min read
Nutrition guide
Essential nutrition beyond vitamins and minerals.
Choline, essential fats, protein, fibre and water each have different roles—and a product is not the same thing as a nutrient.
3 min read
Nutrition guide
Electrolytes and hydration.
What sodium and potassium do, where they come from, and when electrolyte products need more context.
6 min read
Medicine safety guide
GLP-1 medicines and surgery: what should you tell your care team?
Why semaglutide and tirzepatide matter for anaesthesia, and why the plan should be individual.
4 min read
Medicine safety guide
GLP-1 medicines and pregnancy: what should you know?
Planning pregnancy, unexpected exposure and why the reason for treatment matters.
4 min read
Evidence guide
Does creatine improve memory or brain function?
What small cognitive studies, a pooled review and an EU scientific assessment actually found.
4 min read
Nutrition guide
Why do protein bars or shakes cause bloating?
Sugar alcohols, added fibre and lactose are different possible explanations.
3 min read
Nutrition evidence guide
Do you need vitamin K2 with vitamin D3?
What the vitamins do, what trials measured, and why warfarin changes the question.
4 min read
Guide
Can weight-loss medicines cause hair loss?
What semaglutide and tirzepatide trials reported, what might explain shedding, and why hair supplements are not an automatic answer.
3 min read
Guide
Does a peptide certificate of analysis prove a vial is safe?
How to understand purity, identity, strength, sterility and endotoxin claims—and what a seller’s document cannot tell you.
4 min read
Guide
Are peptides banned in sport? What athletes should check
BPC-157, TB-500, CJC-1295 and other substances under the 2026 WADA list, plus medicines, exemptions and supplement risks.
3 min read
Guide
Can weight-loss medicines cause gallbladder problems?
What trials of Wegovy and Zepbound reported about gallstones and inflammation, and when to seek care.
3 min read
Guide
Can iron or calcium interfere with levothyroxine?
Why thyroid medicine, mineral supplements and biotin blood-test claims need different explanations.
5 min read
Guide
Missed a dose of semaglutide or tirzepatide?
Why the answer depends on the exact medicine, formulation and length of the interruption.
5 min read
Evidence guide
Does creatine cause hair loss?
What an early hormone study and a later hair-measurement trial can—and cannot—tell us.
2 min read
Evidence guide
Do weight-loss medicines cause muscle loss?
What scans in semaglutide and tirzepatide studies show, and why lean mass is not the same as muscle strength.
4 min read
Evidence guide
Does CBD help with sleep or insomnia?
What small clinical trials found, why mixtures are hard to interpret and what safety questions remain.
4 min read
Evidence guide
Can psilocybin help people stop smoking?
A 2026 pilot compared a supported psilocybin programme with nicotine patches. Here is what the result does—and does not—show.
3 min read
Medicine interaction guide
Do tirzepatide or semaglutide affect the contraceptive pill?
Why product instructions differ, what was measured in a hormone study and when vomiting or diarrhoea matters.
3 min read
Medicine safety guide
Can GLP-1 medicines cause pancreatitis?
What safety warnings, trial reviews and symptoms can—and cannot—tell us about semaglutide and tirzepatide.
3 min read
Product quality guide
Do protein powders contain heavy metals?
How to interpret laboratory results, serving sizes and uncertainty without assuming every product is the same.
3 min read
Research guide
Does psychedelic microdosing improve mood or focus?
What placebo-controlled studies of psilocybin and LSD can—and cannot—tell us.
5 min read
Evidence guide
Can DMT help treat depression?
What a small controlled study found, and why a short-acting psychedelic is not yet a proven treatment.
6 min read
Health interest
Energy & tiredness
What alertness, sleep, food, exercise and nutrient deficiencies can—and cannot—explain.
2 min read
Health interest
Focus & memory
Separate attention, memory, fatigue and mood before asking whether a substance helps.
2 min read
Health interest
Weight & appetite
Understand medicines, food, movement and supplement claims without turning an average result into a personal forecast.
3 min read
Health interest
Sleep
Look at timing, sleep quality, daytime effects and the evidence behind sleep-related products.
2 min read
Health interest
Stress & mood
Understand everyday stress, anxiety and low mood; explore support, product claims and what clinical studies actually test.
5 min read
Health interest
Muscle & exercise
Connect protein, creatine, training and function without treating a label claim as a performance result.
2 min read
Health interest
Gut & digestion
Find the difference between food, fibre, probiotics, symptoms and experimental claims about the gut.
2 min read
Health interest
Skin & hair
Separate appearance, deficiency, cosmetic formulations and experimental repair claims.
2 min read
Health interest
Joints & recovery
Separate pain, mobility, injury recovery and laboratory repair claims.
2 min read
Health interest
Healthy ageing
Read longevity claims through function, disease outcomes, biomarkers and the limits of short studies.
2 min read
Nutrition guide
Vitamin A in food: retinol, beta-carotene and absorption
Follow the different paths from animal foods and plants to the vitamin A your body uses.
5 min read
Nutrition guide
How to read vitamin A labels and spot overlapping supplements
Retinol, beta-carotene, RAE, IU and percentages explained with a worked label.
7 min read
Nutrition guide
Vitamin A in pregnancy and planning: food, supplements and retinoids
Why the form matters, how to read prenatal labels, and when a retinoid medicine needs urgent attention.
6 min read
Nutrition guide
Vitamin A interactions: orlistat, retinoids and other supplements
Why one medicine can reduce absorption while other products may increase the risk of excess.
6 min read
Nutrition guide
Too much vitamin A: accidental exposure, symptoms and excess
Why one possible overdose and repeated high intake need different questions—and where to get help.
5 min read
Nutrition guide
Vitamin A and night vision: deficiency, eye health and what to check
Why vitamin A matters in dim light, what else can affect sight and how deficiency is assessed.
5 min read
Evidence guide
AREDS and AREDS2: do eye supplements help macular degeneration?
What the two trials found, who they studied and why eye-supplement labels need a closer look.
7 min read
Evidence guide
Beta-carotene, smoking and cancer: what two trials found
ATBC and CARET tested supplements, not vegetables. Here is what they found and what the numbers mean.
5 min read
Nutrition guide
Vitamin A for children: food, deficiency and measles
Why children need vitamin A, why guidance differs and when a child needs medical help.
6 min read
Nutrition guide
Vitamin A, retinol and skin: food, skincare and retinoid medicines
What differs between a vitamin supplement, a retinol serum and retinoid medicines—and what the studies show.
5 min read
Nutrition guide
Vitamin A and immunity: do supplements prevent infections?
What the immune system needs, why deficiency matters and what infection studies can—and cannot—tell us.
4 min read
Question guide
How vitamin A moves through your body
Follow the different routes from a carrot or cod liver oil to the intestine, liver, eye and other tissues.
5 min read
Question guide
GHK-Cu, GLOW and KLOW: what is the difference?
A practical comparison of skin serums, peptide blends and the claims behind them.
3 min read
Question guide
Peptide injection-site reactions: what should you look for?
Understand local irritation, why causes can differ and when symptoms need prompt attention.
3 min read
Question guide
BPC-157 and TB-500 for injury recovery: how do they compare?
Why these peptides are discussed together, what each has been studied for and what remains unknown.
3 min read
Question guide
Copper-peptide serum for skin: what should you expect?
A practical guide to GHK-Cu on a skin-care label, its research and common questions.
3 min read
Question guide
Semax and Selank: what is the difference for focus and stress?
Why the two peptides are discussed together, what their human studies measured and what remains uncertain.
3 min read
Question guide
Weight-loss peptides: appetite, fat burning and what is actually measured
Why semaglutide, tirzepatide, tesamorelin and AOD-9604 answer different questions.
4 min read
Question guide
Fat burning, fat loss and weight loss: what is the difference?
What “fat-busting” claims can mean, what the body does naturally and which results matter.
3 min read
Question guide
Epitalon, melatonin and sleep: how are they connected?
A guide to the peptide, the older extract and the sleep-timing hormone—without treating them as the same thing.
4 min read
Study explainer
AOD-9604 for fat loss: what did the human study find?
The story behind the “fat-burning peptide” claim, from an older conference abstract to the OPTIONS study.
4 min read
Study explainer
Tesamorelin and visceral fat: what did the trial really show?
A close look at the people, scans and percentages behind a widely repeated abdominal-fat claim.
3 min read
Study explainer
Tirzepatide, fat and lean mass: what did the body-scan study find?
The SURMOUNT-1 substudy explains part of weight loss; it does not measure every aspect of muscle health.
3 min read
Question guide
Visceral fat and fat under the skin: what is the difference?
Where abdominal fat is stored, how it is measured and what a number can—and cannot—say about health.
3 min read
Study explainer
Can BPC-157 help a tendon heal? What the research actually shows
Follow the claim from an Achilles-tendon experiment in rats to the much smaller body of human evidence.
4 min read
Study explainer
GHK-Cu and collagen: what do skin-care claims mean?
From cells in a dish to a small human skin study: how much does copper-peptide research tell us?
3 min read
Question guide
KPV and inflammation: what do gut studies tell us about KLOW?
Follow the idea from intestinal cells and mouse studies to the separate question of injection-site reactions.
4 min read
Question guide
TB-500 and thymosin beta-4: why are they not the same?
A practical guide to the shorter fragment, the longer molecule and the research often quoted for each.
3 min read
Question guide
How are GLOW and KLOW meant to work? A guide to their ingredients
The skin, hair and recovery ideas behind four peptide names—and what their separate studies actually tested.
4 min read
Question guide
Growth-hormone peptides, muscle and sleep: how do the claims fit together?
A beginner’s guide to the signal, the hormone and why a blood-test change is not the same as a better outcome.
4 min read
Question guide
Melanotan II, self-tan and sunscreen: what is the difference?
How a tanning peptide, cosmetic colour and related prescription medicines answer different questions.
3 min read
Practical guide
Does GHK-Cu help eyebrows or scalp hair grow?
A closer look at two small studies, the products they tested and what their results mean.
4 min read
Practical guide
Does BPC-157 need to be used near an injury?
Local versus systemic claims, oral and topical products, and what route research can actually tell us.
4 min read
Practical guide
BPC-157 and gut health: what does the research show?
From a small ulcerative-colitis trial to claims about capsules, the intestinal barrier and “gut healing”.
4 min read
Practical guide
MOTS-c and exercise: what did the studies measure?
A molecule that responds to exercise is not automatically a substitute for it.
3 min read
Practical guide
MOTS-c and CB4211: what did the human trial actually test?
A related molecule, a small liver study and the difference between early results and proof.
4 min read
Practical guide
SS-31 and energy: what did the human studies find?
A closer look at fatigue, muscle function, laboratory markers and the Barth-syndrome approval.
4 min read
Practical guide
Semax, Selank and brain scans: what did the studies show?
What fMRI can measure, what the two small studies reported and what they cannot tell us about focus or anxiety.
4 min read
Practical guide
Semax and stroke recovery: what do the studies show?
Acute stroke, later rehabilitation and the limits of two human reports.
4 min read
Practical guide
Selank and anxiety: what do the human studies show?
Three small comparisons, what “similar” means and questions to take to a clinician.
4 min read
Practical guide
Does epitalon lengthen telomeres or help people live longer?
Follow the claim from laboratory cells to a 15-year human study of a different preparation.
3 min read
Practical guide
CJC-1295 with DAC or without DAC: what is the difference?
Why similar names can describe different substances—and what the human hormone studies actually tested.
3 min read
Practical guide
Thymosin beta-4 eye trials: what do they tell us about TB-500?
Follow the human studies from early dry-eye results to larger trials and a different eye condition.
4 min read
Practical guide
What happens to weight after stopping semaglutide or tirzepatide?
What withdrawal trials found, why people’s experiences differ and what to discuss before changing treatment.
4 min read
Practical guide
Can you use copper peptides with retinol, vitamin C or acids?
How to interpret compatibility claims, product instructions and skin reactions without a one-size-fits-all rule.
4 min read
Practical guide
BPC-157 and knee pain: what did the human study show?
Follow the “11 out of 12” claim back to the patients, the measurements and the missing comparison.
4 min read
Practical guide
Tesamorelin and fatty liver: what did the HIV study show?
Follow the liver-fat measurement, the biopsy findings and the limits of a small trial.
4 min read
Question guide
Melanotan II, libido and erections: is it the same as PT-141?
Why a tanning peptide attracted sexual-health research, what the small studies found and how a related prescription medicine differs.
5 min read
Practical guide
What can I eat if semaglutide or tirzepatide makes me feel sick?
Practical food and fluid questions, from a smaller appetite to symptoms that need medical attention.
5 min read
Practical guide
Weight loss has slowed on semaglutide or tirzepatide: is that a plateau?
Why the scale can level off, what studies mean by a plateau and how to think about maintaining weight.
5 min read
Question guide
Can AOD-9604 repair cartilage or help an arthritic knee?
What the rabbit study measured, why hyaluronic acid appears in the claim and what remains unknown in people.
4 min read
Question guide
Ipamorelin and MK-677: are they the same kind of growth-hormone signal?
One peptide, one small molecule and a shared receptor: what the studies actually measured.
5 min read
Question guide
Sermorelin, tesamorelin and CJC-1295: what is the difference?
Three related signals, distinct products and different questions in the research.
3 min read
Study guide
Bremelanotide and desire: what did the RECONNECT trials find?
A closer look at the questions, questionnaire scores, side effects and missing data behind the US prescription product.
4 min read
Medicine safety guide
Semaglutide and vision loss: what is NAION?
What the rare eye warning means, which symptoms need urgent attention and how to interpret the evidence.
4 min read
Medicine safety guide
Semaglutide and diabetic retinopathy: what did the trial show?
Why an eye warning in diabetes deserves attention, what SUSTAIN-6 measured and what remains uncertain.
4 min read
Question guide
BPC-157 capsules versus injections: what is known?
Why the route matters, what human and animal studies measured, and what “stomach stable” does—and does not—mean.
4 min read
Science guide
Can peptides work as pills? Why the formulation matters
Follow a peptide from a tablet to a possible effect, and see why one product cannot prove another will be absorbed.
3 min read
Question guide
Thymosin alpha-1, beta-4 and TB-500: are they the same?
A shared name, different molecules and different research questions.
3 min read
Study guide
Thymosin alpha-1 and hepatitis B: what did the trials find?
Two studies, different comparisons and what a change in viral markers can actually tell us.
4 min read
Question guide
Can you boost your immune system with peptides or vitamins?
What immune support can mean, what everyday habits and vaccines do, and how to judge product claims.
3 min read
Study guide
Thymosin alpha-1 and flu vaccination: what has been studied?
Why one Italian medicine is used alongside vaccination, and what the small studies can tell us.
4 min read
Study guide
Thymosin alpha-1 and sepsis: what did the TESTS trial show?
A large critical-care study, its corrected results and why its findings do not answer every immune-health question.
3 min read
Practical product guide
Glutathione capsules, skin products and IV drips: what is different?
Follow the evidence and practical questions behind three very different ways this peptide is sold.
4 min read
Evidence guide
Glutathione for skin: what did the studies actually find?
A practical look at pigmentation, serums, supplements and drips—without treating different studies as the same experiment.
4 min read
Practical skin guide
Dark spots and uneven skin colour: what might be happening?
A beginner’s guide to common causes, sun protection and deciding when a changing spot needs attention.
3 min read
Practical comparison
Fat-dissolving injections, fat burning and weight loss: what is the difference?
Why a treatment for an area under the chin, an appetite medicine and a peptide marketed for fat loss answer different questions.
3 min read
Human evidence guide
ARA-290 and neuropathy: what did the human studies measure?
Follow the difference between a nerve image, a symptom score and evidence that a treatment improves daily life.
4 min read
Practical health guide
Tingling, numbness and nerve pain: what is peripheral neuropathy?
A plain-language guide to possible causes, clinical checks and what different tests can—and cannot—show.
3 min read
Practical health guide
Vitamin B6, B12 and nerve symptoms: too much or too little?
Why deficiency and supplement excess can cause similar symptoms, and what to take to a healthcare appointment.
4 min read
Practical health guide
Nitrous oxide, vitamin B12 and nerve symptoms: what is the connection?
Why tingling or weakness after laughing gas deserves attention, even when a B12 result looks normal.
3 min read
Practical health guide
Vitamin B12 tests: what do B12, MMA and homocysteine results mean?
Why a blood number is one part of the story, and why symptoms, supplements and the reason for testing matter.
5 min read
Human evidence guide
Oxytocin nasal spray: does it improve trust or connection?
A laboratory trust game, a replication and clinical trials answer different questions. Here is how to read them.
3 min read
Practical evidence guide
What happens to visceral fat after stopping tesamorelin?
Follow two studies beyond six months and see what their measurements can—and cannot—predict.
3 min read
Practical evidence guide
Tesamorelin side effects: why monitor blood sugar and IGF-1?
A practical guide to the signals, side effects and uncertainties in US Egrifta WR information.
3 min read
Practical skin-care guide
My serum stings or causes a rash: is it irritation or allergy?
What a reaction can mean, when to seek help and how to make sense of the products involved.
4 min read
Recovery guide
Tendon, ligament or muscle injury: what is the difference?
Understand the tissue, the symptoms and why recovery is more than a pain score.
4 min read
Recovery evidence guide
Can collagen and vitamin C help a tendon heal?
From a blood test in healthy volunteers to a small Achilles study: what did researchers actually measure?
4 min read
US policy explainer
BPC-157, GHK-Cu and US peptide compounding: what changed?
A dated guide to the HHS policy, multi-ingredient blends and a separate planned FDA advisory discussion.
4 min read
Look closely at a study.
Selected historical examples, not a comprehensive evidence review.
Study explainer
Retatrutide: the 2023 Phase 2 obesity trial.
A historical case study in reading populations, endpoints and comparisons.
6 min read
Study explainer
Psilocybin: the 2022 depression trial.
Why a short-term result and a lasting benefit are not the same conclusion.
6 min read
A source is a start.
Not a stamp of certainty.
Read the study setting, the outcome and the limitation alongside the claim. Our proposed evidence standards →