Bolt Guides

Expert insights on weight loss and more.

Featured

Wegovy

min read

Wegovy Pill UK: Approval, Eligibility, Dosing and Safety

The Wegovy pill (oral semaglutide) is now MHRA-approved in the UK. Who can take it, the dosing schedule, how to take it, and how it compares with the injection.

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Weight loss

Read all on weight loss

Weight Loss

min read

Weight Loss Pills and Alcohol: Risks, Interactions and UK Guidance

How alcohol interacts with UK weight loss medications including Wegovy, the oral Wegovy pill, Mysimba and orlistat: key risks and when to seek advice.

Bio-Rad HPLC HbA1c Testing: NHS Laboratory Guide and NICE Guidance

Weight Loss

min read

Bio-Rad HPLC HbA1c Testing: NHS Laboratory Guide and NICE Guidance

Bio-Rad HPLC HbA1c testing explained: how ion-exchange chromatography works, NHS laboratory use, NICE diagnostic thresholds, haemoglobin variant interference, and MHRA compliance guidance.

Gastric Sleeve Surgery: How It Works, Eligibility and Long-Term Outcomes

Weight Loss

min read

Gastric Sleeve Surgery: How It Works, Eligibility and Long-Term Outcomes

Gastric sleeve surgery explained: how sleeve gastrectomy works, NHS eligibility criteria, what to expect before and after surgery, risks, and long-term outcomes. Evidence-based UK guidance.

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GLP-1 Brands

Read all on GLP-1 brands

Wegovy

Answer all your questions about Wegovy treatments for weight loss.

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Mounjaro

Answer all your questions about Mounjaro treatments for weight loss.

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GLP-1 Brands

min read

Rybelsus for Weight Loss: Evidence, Safety, and UK Prescribing Guidance

Is Rybelsus a good weight loss pill? How oral semaglutide compares to the new Wegovy pill (25 mg), the evidence, side effects, and UK prescribing guidance.

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Rybelsus for Weight Loss: Evidence, Safety, and UK Prescribing Guidance

Retatrutide Bacteriostatic Water Reconstitution: UK Safety Guide

GLP-1 Brands

min read

Retatrutide Bacteriostatic Water Reconstitution: UK Safety Guide

How much bacteriostatic water to mix with retatrutide — understand reconstitution principles, UK regulatory status, safety risks, and when to seek medical advice before use.

Retatrutide in Pill Form: What UK Patients Need to Know

GLP-1 Brands

min read

Retatrutide in Pill Form: What UK Patients Need to Know

Can you get retatrutide in pill form? Find out why no oral version exists yet, how peptide medicines work, and which licensed weight loss treatments are available in the UK right now.

How to Eat on Retatrutide: UK Dietary and Safety Guide

GLP-1 Brands

min read

How to Eat on Retatrutide: UK Dietary and Safety Guide

How to eat on retatrutide: expert UK dietary guidance covering meal patterns, foods to prioritise, managing nausea, and staying well-nourished during treatment. Read now.

Read all on GLP-1 brands

Men’s Health

Testosterone

Answer all your questions about testosterone.

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Erectile dysfunction

Answer all your questions about erectile dysfunction.

Read erectile dysfunction guides

Erectile Dysfunction

min read

Does Rybelsus Cause Erectile Dysfunction?

Rybelsus is not listed as a cause of erectile dysfunction. Explore the UK evidence on semaglutide and sexual health, and how to manage ED with diabetes.

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Testosterone

min read

Does Testosterone Treatment Cause Hunger? UK Guide to TRT and Appetite

Does testosterone treatment cause hunger? Discover how TRT may influence appetite, the mechanisms involved, and practical strategies to manage hunger changes during testosterone therapy in the UK.

Can Testogel Make You Lethargic? Causes and Management

Testosterone

min read

Can Testogel Make You Lethargic? Causes and Management

Can Testogel make you feel tired? Discover why testosterone replacement therapy may cause lethargy, key warning signs to watch for, and evidence-based strategies to manage fatigue during TRT in the UK.

Testosterone

min read

Can Testosterone Treatments Cause Swollen Feet? UK Guide

Can testosterone treatments cause swollen feet? Discover how TRT affects fluid retention, when to seek medical advice, management strategies, and alternative causes of peripheral oedema during testosterone therapy.

Which Component Contributes Most to Total Energy Expenditure?

Weight Loss

min read

Which Component Contributes Most to Total Energy Expenditure?

Which component contributes the most to total energy expenditure? Discover why basal metabolic rate accounts for 50–70% of daily energy use, and learn how BMR, physical activity, and diet affect your metabolism and weight management strategies.

How Much Zinc to Take When Sick: UK Dosage Guidance

Supplements

min read

How Much Zinc to Take When Sick: UK Dosage Guidance

Discover evidence-based guidance on how much zinc to take when sick, including recommended doses for adults, safety precautions, potential side effects, and UK clinical advice for zinc supplementation during illness.

Can I Take My Weight Loss Injection a Day Early? GLP-1 Guide

Wegovy

min read

Can I Take My Weight Loss Injection a Day Early? GLP-1 Guide

Wondering if you can take Wegovy, Mounjaro or other GLP-1 injections early? Get clear answers on timing, safety and what to do if you miss a dose.

Whey Protein Powder Chocolate Peanut Butter: Benefits & Safety Guide

Supplements

min read

Whey Protein Powder Chocolate Peanut Butter: Benefits & Safety Guide

Discover everything about whey protein powder chocolate peanut butter: nutritional benefits, muscle growth support, safety considerations, and how to choose quality products in the UK. Expert guidance on this popular protein supplement.

Should You Rotate Allergy Medication? What the Evidence Says

Supplements

min read

Should You Rotate Allergy Medication? What the Evidence Says

Should you rotate allergy medication to stop it losing effectiveness? Discover what the clinical evidence, NICE guidance, and NHS advice say about antihistamine rotation and how to manage allergy symptoms safely.

Weight Loss

min read

GLP-1 Probiotics for Weight Loss: Evidence and NHS Guidance

Discover the truth about GLP-1 probiotics for weight loss. Learn how they differ from prescription medications, review the clinical evidence, understand safety considerations, and explore NHS-approved weight management treatments backed by NICE guidance.

Can CoQ10 Cause Dizziness? Symptoms, Causes and Safety Advice

Supplements

min read

Can CoQ10 Cause Dizziness? Symptoms, Causes and Safety Advice

Can CoQ10 cause dizziness? Discover why some people experience dizziness with CoQ10 supplements, the potential mechanisms involved, who should use caution, and what to do if symptoms occur. Evidence-based UK guidance.

Sweet-Smelling Urine: Causes, Saxenda & When to Act

GLP-1 Brands

min read

Sweet-Smelling Urine: Causes, Saxenda & When to Act

Noticing sweet, fruity, or unusual urine odour? Learn what causes it, how Saxenda and weight loss may be involved, and when to seek medical advice.

Can Muscles Grow in a Calorie Deficit? Evidence-Based UK Guide

Weight Loss

min read

Can Muscles Grow in a Calorie Deficit? Evidence-Based UK Guide

Can muscles grow in a calorie deficit? Discover the science behind body recomposition, who can build muscle whilst losing fat, and practical UK-aligned guidance on protein intake, training, and safe calorie restriction.

Does Bitter Gourd Decrease HbA1c? Evidence, Safety, and UK Guidance

Weight Loss

min read

Does Bitter Gourd Decrease HbA1c? Evidence, Safety, and UK Guidance

Does bitter gourd decrease HbA1c? Explore the clinical evidence, UK guidelines, safety considerations, and drug interactions of karela for type 2 diabetes management.

Does Lisinopril Cause Gynaecomastia? Evidence and UK Guidance

Weight Loss

min read

Does Lisinopril Cause Gynaecomastia? Evidence and UK Guidance

Does lisinopril cause gynaecomastia? Explore the evidence, understand drug-induced breast changes in men, and find out when to speak to your GP — based on NICE and MHRA guidance.

Saxenda for Morbidly Obese Patients: UK Guidance and Clinical Use

GLP-1 Brands

min read

Saxenda for Morbidly Obese Patients: UK Guidance and Clinical Use

Discover how Saxenda supports weight management for morbidly obese patients in the UK. Learn about eligibility criteria, clinical efficacy, safety considerations, and why it must form part of comprehensive specialist care with lifestyle intervention.

Erectile Dysfunction

min read

Does Caffeine Cause Erectile Dysfunction? Evidence and Guidance

Does caffeine cause erectile dysfunction? Discover what current evidence reveals about coffee, caffeine intake and ED, plus safe consumption guidelines and when to consult your GP about persistent erectile difficulties.

Why Is Rybelsus Not as Popular? UK Prescribing Challenges

GLP-1 Brands

min read

Why Is Rybelsus Not as Popular? UK Prescribing Challenges

Discover why Rybelsus is not as popular despite being the first oral GLP-1 receptor agonist. Learn about dosing challenges, NHS availability, cost factors, and how it compares to other type 2 diabetes treatments in UK clinical practice.

Erectile Dysfunction

min read

Benefits of Taking Tadalafil Daily for Erectile Dysfunction

Discover the benefits of taking tadalafil daily for erectile dysfunction, including spontaneity, consistent results, and dual treatment for urinary symptoms. Learn who can safely use daily tadalafil, potential side effects, and how this UK-licensed PDE5 inhibitor works to restore confidence in intimate relationships.

Bolt Guides

Featured

Wegovy Pill UK: Approval, Eligibility, Dosing and Safety

Weight loss

Weight Loss Pills and Alcohol: Risks, Interactions and UK Guidance

Bio-Rad HPLC HbA1c Testing: NHS Laboratory Guide and NICE Guidance

Gastric Sleeve Surgery: How It Works, Eligibility and Long-Term Outcomes

GLP-1 Brands

Wegovy

Mounjaro

Rybelsus for Weight Loss: Evidence, Safety, and UK Prescribing Guidance

Retatrutide Bacteriostatic Water Reconstitution: UK Safety Guide

Retatrutide in Pill Form: What UK Patients Need to Know

How to Eat on Retatrutide: UK Dietary and Safety Guide

Men’s Health

Testosterone

Erectile dysfunction

Does Rybelsus Cause Erectile Dysfunction?

Does Testosterone Treatment Cause Hunger? UK Guide to TRT and Appetite

Can Testogel Make You Lethargic? Causes and Management

Can Testosterone Treatments Cause Swollen Feet? UK Guide

Browse all

Which Component Contributes Most to Total Energy Expenditure?

How Much Zinc to Take When Sick: UK Dosage Guidance

Can I Take My Weight Loss Injection a Day Early? GLP-1 Guide

Whey Protein Powder Chocolate Peanut Butter: Benefits & Safety Guide

Should You Rotate Allergy Medication? What the Evidence Says

GLP-1 Probiotics for Weight Loss: Evidence and NHS Guidance

Can CoQ10 Cause Dizziness? Symptoms, Causes and Safety Advice

Sweet-Smelling Urine: Causes, Saxenda & When to Act

Can Muscles Grow in a Calorie Deficit? Evidence-Based UK Guide

Does Bitter Gourd Decrease HbA1c? Evidence, Safety, and UK Guidance

Does Lisinopril Cause Gynaecomastia? Evidence and UK Guidance

Saxenda for Morbidly Obese Patients: UK Guidance and Clinical Use

Does Caffeine Cause Erectile Dysfunction? Evidence and Guidance

Why Is Rybelsus Not as Popular? UK Prescribing Challenges

Benefits of Taking Tadalafil Daily for Erectile Dysfunction