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.

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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.

Obesity-Related Glomerulopathy Treatment: UK Clinical Guide

Weight Loss

min read

Obesity-Related Glomerulopathy Treatment: UK Clinical Guide

Discover evidence-based obesity-related glomerulopathy treatment options, including weight loss strategies, renoprotective medications, and long-term kidney monitoring. Learn how UK specialists manage this increasingly common kidney condition.

Vitamin K and Magnesium: Benefits, Safety, and Interactions

Supplements

min read

Vitamin K and Magnesium: Benefits, Safety, and Interactions

Discover how vitamin K and magnesium work together to support bone health and cardiovascular function. Learn about safe supplementation, food sources, and important interactions with medications like warfarin.

Ayurvedic Medication for Allergies: Evidence, Safety, and NHS Guidance

Supplements

min read

Ayurvedic Medication for Allergies: Evidence, Safety, and NHS Guidance

Ayurvedic medication for allergies: discover what UK regulators say about safety, common herbal ingredients, potential drug interactions, and when to seek NHS medical advice.

Calorie Deficit Heart Palpitations: Causes, Risks, and NHS Guidance

Weight Loss

min read

Calorie Deficit Heart Palpitations: Causes, Risks, and NHS Guidance

Calorie deficit heart palpitations explained: discover why restricting calories can affect your heart rhythm, which nutritional deficiencies are linked, and when to seek NHS medical advice.

Beetroot Pills for Weight Loss: Evidence, Safety, and NHS Guidance

Supplements

min read

Beetroot Pills for Weight Loss: Evidence, Safety, and NHS Guidance

Beetroot pills for weight loss — do they really work? Discover what the evidence says, potential side effects, drug interactions, and what NHS guidance recommends for safe, effective weight management.

Does CoQ10 Cause Constipation? Evidence and Guidance

Supplements

min read

Does CoQ10 Cause Constipation? Evidence and Guidance

Does CoQ10 cause constipation? Discover what clinical evidence reveals about CoQ10 supplements and bowel function, including common side effects, prevention strategies, and when to consult your GP about digestive symptoms.

Erectile Dysfunction

min read

Do Cucumbers Help with Erectile Dysfunction? Evidence Review

Do cucumbers help with erectile dysfunction? Discover the scientific evidence behind this claim and learn about proven, evidence-based treatments for ED recommended by UK medical guidance, including lifestyle changes and pharmacological options.

Caffeine and Allergy Medication: Interactions, Risks, and UK Guidance

Supplements

min read

Caffeine and Allergy Medication: Interactions, Risks, and UK Guidance

Caffeine and allergy medication can interact in ways that affect your treatment. Learn how caffeine affects antihistamines and decongestants, who should be cautious, and when to speak to a pharmacist or GP.

Can Deficiency of Vitamin D Cause Weight Gain? UK Evidence

Supplements

min read

Can Deficiency of Vitamin D Cause Weight Gain? UK Evidence

Can vitamin D deficiency cause weight gain? Discover what UK research reveals about the complex relationship between low vitamin D levels and body weight, plus guidance on testing and treatment.

Is Sildenafil a Narcotic? UK Classification and Facts

Erectile Dysfunction

min read

Is Sildenafil a Narcotic? UK Classification and Facts

Is sildenafil a narcotic? Discover the facts about sildenafil's legal classification in the UK, how it differs from controlled substances, its mechanism of action, and safe prescribing guidelines for erectile dysfunction and pulmonary hypertension.

Which Milk Is Good for Diabetes Type 2: Best Options

Weight Loss

min read

Which Milk Is Good for Diabetes Type 2: Best Options

Discover which milk is good for diabetes type 2. Compare dairy and plant-based options, understand carbohydrate content, and learn how to choose the best milk for stable blood glucose control and overall health.

Erectile Dysfunction

min read

Do Asthma Inhalers Cause Erectile Dysfunction? Evidence and Advice

Do asthma inhalers cause erectile dysfunction? Discover the evidence on inhaled medications, what factors may link asthma and ED, and when to seek medical advice for both conditions.

Wegovy

min read

Can I Take Advil with Wegovy? Safety Guide

Can I take Advil with Wegovy? Discover the evidence-based answer, safety considerations, potential side effects, and when to seek medical advice about combining ibuprofen with semaglutide for weight management.

Hair Loss

min read

Dove Shampoo and Hair Loss: Ingredients, Evidence, and NHS Guidance

Dove shampoo and hair loss — is there a real link? Explore the evidence on shampoo ingredients, common causes of hair thinning, and when to see your GP. UK-focused, NHS-aligned advice.

Hair Loss

min read

Does Olaplex Cause Hair Loss? Evidence, Side Effects, and UK Guidance

Does Olaplex cause hair loss? Explore the evidence, UK regulatory guidance, reported side effects, and when to see a GP about hair shedding or scalp concerns.

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

Obesity-Related Glomerulopathy Treatment: UK Clinical Guide

Vitamin K and Magnesium: Benefits, Safety, and Interactions

Ayurvedic Medication for Allergies: Evidence, Safety, and NHS Guidance

Calorie Deficit Heart Palpitations: Causes, Risks, and NHS Guidance

Beetroot Pills for Weight Loss: Evidence, Safety, and NHS Guidance

Does CoQ10 Cause Constipation? Evidence and Guidance

Do Cucumbers Help with Erectile Dysfunction? Evidence Review

Caffeine and Allergy Medication: Interactions, Risks, and UK Guidance

Can Deficiency of Vitamin D Cause Weight Gain? UK Evidence

Is Sildenafil a Narcotic? UK Classification and Facts

Which Milk Is Good for Diabetes Type 2: Best Options

Do Asthma Inhalers Cause Erectile Dysfunction? Evidence and Advice

Can I Take Advil with Wegovy? Safety Guide

Dove Shampoo and Hair Loss: Ingredients, Evidence, and NHS Guidance

Does Olaplex Cause Hair Loss? Evidence, Side Effects, and UK Guidance

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