Bolt Guides

Expert insights on weight loss and more.

Featured

Why Do I Feel Worse After My B12 Injection? Causes & Management

Supplements

min read

Why Do I Feel Worse After My B12 Injection? Causes & Management

Discover why you might feel worse after a B12 injection, including metabolic adjustment, common side effects, and when to seek medical advice. Expert guidance on managing post-injection symptoms safely.

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Weight loss

Read all on weight loss

GLP-1 & SGLT2 Inhibitor Combination Therapy

Weight Loss

min read

GLP-1 & SGLT2 Inhibitor Combination Therapy

Discover how combining GLP-1 agonists with SGLT2 inhibitors may improve glycaemic control and support cardiovascular health.

How to Wean Off GLP-1 Medications Safely

Weight Loss

min read

How to Wean Off GLP-1 Medications Safely

Should you taper GLP-1 drugs like semaglutide before stopping? Get UK clinical guidance on how to discontinue treatment safely.

What Age Does Metabolism Slow Down in Men?

Weight Loss

min read

What Age Does Metabolism Slow Down in Men?

Find out when metabolism slows down in men, why muscle loss matters more than age, and what you can do to support your metabolic health.

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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

Does Victoza Cause Diarrhoea? Causes & Management

Diarrhoea affects more than 1 in 10 Victoza users. Learn why liraglutide causes this side effect, how to manage it, and when to contact your GP.

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Does Victoza Cause Diarrhoea? Causes & Management

Does Victoza Need Refrigerating? Storage Guide

GLP-1 Brands

min read

Does Victoza Need Refrigerating? Storage Guide

Find out how long Victoza (liraglutide) can be kept out of the fridge, safe room temperature limits, and how to store your pen correctly. UK guidance.

Victoza After Opening: Storage & 30-Day Guide

GLP-1 Brands

min read

Victoza After Opening: Storage & 30-Day Guide

Does Victoza need refrigerating after opening? Learn the 30-day use rule, correct storage temperatures, and signs of degradation for safe liraglutide use.

Why Does My Urine Smell? Causes & When to Act

GLP-1 Brands

min read

Why Does My Urine Smell? Causes & When to Act

Smelly urine can have many causes — from diet and hydration to infections or blood sugar changes. Learn what's normal and when to seek medical advice.

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

Sildenafil & PDE5 Inhibitors: UK Clinical Guide

Erectile Dysfunction

min read

Sildenafil & PDE5 Inhibitors: UK Clinical Guide

Learn how sildenafil works as a PDE5 inhibitor, its licensed uses for erectile dysfunction and pulmonary hypertension, and key UK prescribing guidance.

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Testosterone

min read

Testosterone Booster for Gynaecomastia: Evidence, Risks and UK Treatment Options

Testosterone booster for gynaecomastia — does it work? Explore the evidence, safety risks, MHRA and NHS guidance, and clinically recognised UK treatment options for enlarged male breast tissue.

Testosterone

min read

How to Treat Rash From Testosterone Treatment: Expert Guide

Discover how to treat rash from testosterone treatment with expert guidance on identifying skin reactions, immediate management steps, medical treatments, and prevention strategies to continue TRT safely and comfortably.

Testosterone

min read

Calorie Deficit Effect on Testosterone: What the Evidence Shows

Calorie deficit effect on testosterone explained — learn how energy restriction affects hormone levels, warning signs to watch for, and evidence-based steps to protect testosterone while losing weight safely.

Erectile Dysfunction

min read

Do NSAIDs Cause Erectile Dysfunction? UK Evidence and Guidance

Do NSAIDs cause erectile dysfunction? Explore the latest UK evidence on whether ibuprofen, naproxen, and other anti-inflammatory medicines affect sexual function, plus when to speak with your GP.

GLP-1 Brands

min read

How Long Does Ozempic Take to Work?

Find out how quickly Ozempic works for type 2 diabetes — from early blood glucose changes to longer-term results. Realistic timelines and what to expect.

Does Victoza Lower Your Blood Sugar? Evidence and Guidance

GLP-1 Brands

min read

Does Victoza Lower Your Blood Sugar? Evidence and Guidance

Does Victoza lower your blood sugar? Discover how this GLP-1 receptor agonist works, clinical evidence for glucose reduction, what to expect during treatment, and essential monitoring guidance for type 2 diabetes management.

Immunotherapy for Tree Pollen Allergy: Effectiveness vs OTC Medications

Supplements

min read

Immunotherapy for Tree Pollen Allergy: Effectiveness vs OTC Medications

Immunotherapy for tree pollen allergy vs OTC medications — discover how sublingual and injection-based treatments compare to antihistamines and nasal sprays, including NHS access, NICE guidance, and when to seek specialist advice.

Does Ozempic Cause Muscle and Joint Pain? UK Clinical Guidance

GLP-1 Brands

min read

Does Ozempic Cause Muscle and Joint Pain? UK Clinical Guidance

Does Ozempic cause muscle and joint pain? Explore the evidence, potential indirect mechanisms, and clinical guidance on managing musculoskeletal symptoms during semaglutide treatment for type 2 diabetes.

Can I Take Rosuvastatin and CoQ10 Together Safely?

Supplements

min read

Can I Take Rosuvastatin and CoQ10 Together Safely?

Can you take rosuvastatin and CoQ10 together safely? Discover the evidence, potential benefits, safety considerations, and when to consult your GP about combining these medications.

Does Tadalafil Cause Constipation? UK Evidence and Guidance

Erectile Dysfunction

min read

Does Tadalafil Cause Constipation? UK Evidence and Guidance

Does tadalafil cause constipation? Discover the evidence on tadalafil side effects, digestive symptoms, and practical management strategies. Expert UK guidance on when to seek medical advice about PDE5 inhibitor use.

Can I Take Vitamin D and C Together? UK Safety Guide

Supplements

min read

Can I Take Vitamin D and C Together? UK Safety Guide

Can you take vitamin D and C together safely? Discover how these essential vitamins work together, recommended UK dosages, potential benefits for immune health, and important safety considerations for combining supplements.

Does Saxenda Make You Angry? Mood Changes Explained

GLP-1 Brands

min read

Does Saxenda Make You Angry? Mood Changes Explained

Does Saxenda make you angry? Discover the facts about mood changes, irritability, and anger during Saxenda treatment. Learn about clinical evidence, management strategies, and when to seek medical advice for emotional side effects.

Bupropion and Saxenda Together: Safety Guide

GLP-1 Brands

min read

Bupropion and Saxenda Together: Safety Guide

Considering bupropion and Saxenda together? Learn about potential interactions, safety considerations, and when specialist supervision is needed in the UK.

CoQ10 and Hair Loss: Evidence, Benefits and Safety

Supplements

min read

CoQ10 and Hair Loss: Evidence, Benefits and Safety

Discover the link between CoQ10 and hair loss. Learn how this antioxidant works, review the clinical evidence, and understand safe usage for hair health with expert UK medical guidance.

Wegovy

min read

Can Wegovy Cause Shingles? Exploring GLP-1 Weight Loss Medications and Potential Side Effects

Can Wegovy cause shingles? Delve into the link between this medication and shingles. Understand the risks, symptoms, and preventative measures.

Bleeding After Saxenda Injection: Causes, Management and When to Seek Help

GLP-1 Brands

min read

Bleeding After Saxenda Injection: Causes, Management and When to Seek Help

Experiencing bleeding after Saxenda injection? Learn why it happens, how to manage minor bleeding safely, when to seek medical advice, and essential injection techniques to prevent future bleeding at the injection site.

Hair Loss

min read

Does Atenolol Cause Hair Loss? Side Effects Explained

Does atenolol cause hair loss? Learn how common alopecia is with this beta-blocker, why it may occur, what investigations your GP may arrange, and when to seek specialist advice.

Can Pre-Workout Cause Fatty Liver? Evidence and Safety Guide

Weight Loss

min read

Can Pre-Workout Cause Fatty Liver? Evidence and Safety Guide

Can pre-workout supplements cause fatty liver disease? Discover the evidence, identify risky ingredients, recognise warning signs of liver stress, and learn how to protect your liver health whilst using fitness supplements safely in the UK.

Bolt Guides

Featured

Why Do I Feel Worse After My B12 Injection? Causes & Management

Weight loss

GLP-1 & SGLT2 Inhibitor Combination Therapy

How to Wean Off GLP-1 Medications Safely

What Age Does Metabolism Slow Down in Men?

GLP-1 Brands

Wegovy

Mounjaro

Does Victoza Cause Diarrhoea? Causes & Management

Does Victoza Need Refrigerating? Storage Guide

Victoza After Opening: Storage & 30-Day Guide

Why Does My Urine Smell? Causes & When to Act

Men’s Health

Testosterone

Erectile dysfunction

Sildenafil & PDE5 Inhibitors: UK Clinical Guide

Testosterone Booster for Gynaecomastia: Evidence, Risks and UK Treatment Options

How to Treat Rash From Testosterone Treatment: Expert Guide

Calorie Deficit Effect on Testosterone: What the Evidence Shows

Browse all

Do NSAIDs Cause Erectile Dysfunction? UK Evidence and Guidance

How Long Does Ozempic Take to Work?

Does Victoza Lower Your Blood Sugar? Evidence and Guidance

Immunotherapy for Tree Pollen Allergy: Effectiveness vs OTC Medications

Does Ozempic Cause Muscle and Joint Pain? UK Clinical Guidance

Can I Take Rosuvastatin and CoQ10 Together Safely?

Does Tadalafil Cause Constipation? UK Evidence and Guidance

Can I Take Vitamin D and C Together? UK Safety Guide

Does Saxenda Make You Angry? Mood Changes Explained

Bupropion and Saxenda Together: Safety Guide

CoQ10 and Hair Loss: Evidence, Benefits and Safety

Can Wegovy Cause Shingles? Exploring GLP-1 Weight Loss Medications and Potential Side Effects

Bleeding After Saxenda Injection: Causes, Management and When to Seek Help

Does Atenolol Cause Hair Loss? Side Effects Explained

Can Pre-Workout Cause Fatty Liver? Evidence and Safety Guide

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