Bolt Guides

How do weight loss pills work? Discover the science behind UK-licensed anti-obesity medications including orlistat and semaglutide, NHS eligibility criteria, side effects, and how to talk to your GP.

Weight Loss

min read

Weight Loss Pills & Shakes: UK Safety Guide

Orlistat, meal replacement shakes and the new oral Wegovy pill: NHS-aligned guidance on evidence, MHRA safety, side effects and when to see your GP.

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GLP-1 Brands

Read all on GLP-1 brands

Wegovy

Answer all your questions about Wegovy treatments for weight loss.

Read Wegovy guides

Mounjaro

Answer all your questions about Mounjaro treatments for weight loss.

Read Mounjaro guides

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

Weight Loss Pill Naltrexone: How Mysimba Works in the UK

GLP-1 Brands

min read

Weight Loss Pill Naltrexone: How Mysimba Works in the UK

Weight loss pill naltrexone (Mysimba) explained: how it works, who qualifies, dosage and side effects, plus how it compares with the new oral Wegovy pill.

1 Month Retatrutide Results: Clinical Evidence and Realistic Expectations

GLP-1 Brands

min read

1 Month Retatrutide Results: Clinical Evidence and Realistic Expectations

1 month retatrutide results explained: what Phase 2 trial data shows about early weight loss, common side effects, realistic expectations, and UK regulatory status in 2025.

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.

Read all on GLP-1 brands

Men’s Health

Testosterone

Answer all your questions about testosterone.

Read testosterone guides

Erectile dysfunction

Answer all your questions about erectile dysfunction.

Read erectile dysfunction guides

Erectile Dysfunction

min read

Does Ibuprofen Affect Erectile Dysfunction? UK Evidence Review

Does ibuprofen affect erectile dysfunction? Explore the evidence on NSAIDs and ED, understand established causes of erectile problems, learn which medications can impact sexual function, and discover when to seek medical advice from your GP.

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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.

Testosterone

min read

Can You Take Testosterone After Prostate Cancer Treatment? UK Guidance

Can you take testosterone after prostate cancer treatment? Discover current UK guidance, eligibility criteria, risks and benefits, and essential monitoring requirements for testosterone replacement therapy following prostate cancer.

What Will 3 Days Without Testogel Do to Me?

Testosterone

min read

What Will 3 Days Without Testogel Do to Me?

What will 3 days without Testogel do to me? Discover how missing doses affects testosterone levels, what symptoms to expect within 72 hours, when to contact your GP, and how to safely resume treatment for hypogonadism.

Weight Loss

min read

GLP-1 Weight Loss Without Exercise: What to Expect

Can GLP-1 medications work without exercise? Learn how semaglutide and liraglutide support weight loss, NHS eligibility, and how to optimise your results.

Erectile Dysfunction

min read

Does Dark Chocolate Help With Erectile Dysfunction? UK Evidence Review

Does dark chocolate help with erectile dysfunction? Discover what the scientific evidence says about dark chocolate, flavonoids and erectile function, plus when to seek medical treatment for ED in the UK.

Small Intestinal Bacterial Overgrowth Probiotics: Evidence and Risks

Supplements

min read

Small Intestinal Bacterial Overgrowth Probiotics: Evidence and Risks

Can small intestinal bacterial overgrowth probiotics help manage SIBO symptoms? Discover which probiotic strains are researched, potential risks, and evidence-based treatment options. Learn when probiotics may worsen symptoms and when to consult your GP for persistent bloating, diarrhoea, or malabsorption.

Best Calorie Deficit to Lose Fat and Gain Muscle: UK Guide

Weight Loss

min read

Best Calorie Deficit to Lose Fat and Gain Muscle: UK Guide

Discover the best calorie deficit to lose fat and gain muscle through evidence-based body recomposition strategies. Learn optimal deficit ranges, protein requirements, resistance training approaches, and monitoring methods aligned with UK NHS guidance for safe, sustainable results.

Why Am I Not Losing Weight on a Calorie Deficit? Key Causes Explained

Weight Loss

min read

Why Am I Not Losing Weight on a Calorie Deficit? Key Causes Explained

Why am I not losing weight on a calorie deficit? Discover the key medical, hormonal, and lifestyle reasons your weight loss may have stalled — plus NHS-backed strategies and when to see your GP.

Could Ozempic Cause Seizures? UK Evidence and Safety Guidance

GLP-1 Brands

min read

Could Ozempic Cause Seizures? UK Evidence and Safety Guidance

Could Ozempic cause seizures? Explore the evidence, understand recognised side effects of semaglutide, and learn when to seek medical advice whilst taking this type 2 diabetes medication in the UK.

Mounjaro

min read

When to Resume Mounjaro After Surgery: UK Guidance

When to resume Mounjaro after surgery: UK guidance on safely restarting tirzepatide post-operatively, factors affecting timing, managing blood glucose during interruption, and individualised perioperative considerations.

Normal Value of Vitamin B12: UK Reference Ranges and Testing

Supplements

min read

Normal Value of Vitamin B12: UK Reference Ranges and Testing

Discover the normal value of vitamin B12 in the UK (typically 133–675 pmol/L), how to interpret your test results, symptoms of deficiency, and when to request testing. Expert guidance on B12 levels and clinical significance.

Does Victoza Stop Working for Weight Loss? Causes and Solutions

GLP-1 Brands

min read

Does Victoza Stop Working for Weight Loss? Causes and Solutions

Does Victoza stop working for weight loss? Discover why weight loss plateaus occur with liraglutide, what causes reduced effectiveness over time, and evidence-based strategies to reinvigorate progress or explore alternative treatments for type 2 diabetes and weight management.

Allergy Medical Group: Tests, Treatment & When to Refer

Supplements

min read

Allergy Medical Group: Tests, Treatment & When to Refer

Expert allergy & immunology care: skin-prick testing, immunotherapy, angioedema and hives treatment. Learn when to seek a referral.

Can Pain Affect Your HbA1c? Chronic Pain, Stress and Blood Sugar

Weight Loss

min read

Can Pain Affect Your HbA1c? Chronic Pain, Stress and Blood Sugar

Can pain affect your HbA1c or A1c? Learn how chronic pain raises stress hormones, disrupts sleep and impacts blood glucose — plus when to contact your GP or diabetes team.

Diabetes, MDD, GAD, and HbA1c: What You Need to Know

Weight Loss

min read

Diabetes, MDD, GAD, and HbA1c: What You Need to Know

Diabetes, MDD, GAD, and HbA1c — discover how depression and anxiety affect blood sugar control, what NICE guidance recommends, and when to seek support from your GP or diabetes team.

Erectile Dysfunction

min read

Does Lamictal Cause Erectile Dysfunction? Evidence and Management

Does Lamictal cause erectile dysfunction? Discover the evidence linking lamotrigine to sexual side effects, understand the mechanisms involved, and learn practical management strategies including when to seek medical advice and available treatment options.

How Long Does Tadalafil Stay in Your System?

Erectile Dysfunction

min read

How Long Does Tadalafil Stay in Your System?

Learn how tadalafil's 17.5-hour half-life affects how long it stays in your system, whether it builds up with daily use, and what this means for you.

Where to Inject Saxenda: Sites, Technique & Rotation

GLP-1 Brands

min read

Where to Inject Saxenda: Sites, Technique & Rotation

Find out exactly where to inject Saxenda — stomach, thigh or upper arm — plus subcutaneous technique and rotation tips to reduce skin reactions.

Bolt Guides

Featured

Oral Incretin Mimetics Available in the UK

Weight loss

Oral Incretin Mimetics Available in the UK

How Weight Loss Pills Work: UK Guide to Anti-Obesity Medications

Weight Loss Pills & Shakes: UK Safety Guide

GLP-1 Brands

Wegovy

Mounjaro

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

Weight Loss Pill Naltrexone: How Mysimba Works in the UK

1 Month Retatrutide Results: Clinical Evidence and Realistic Expectations

Retatrutide Bacteriostatic Water Reconstitution: UK Safety Guide

Men’s Health

Testosterone

Erectile dysfunction

Does Ibuprofen Affect Erectile Dysfunction? UK Evidence Review

Can Testosterone Treatments Cause Swollen Feet? UK Guide

Can You Take Testosterone After Prostate Cancer Treatment? UK Guidance

What Will 3 Days Without Testogel Do to Me?

Browse all

GLP-1 Weight Loss Without Exercise: What to Expect

Does Dark Chocolate Help With Erectile Dysfunction? UK Evidence Review

Small Intestinal Bacterial Overgrowth Probiotics: Evidence and Risks

Best Calorie Deficit to Lose Fat and Gain Muscle: UK Guide

Why Am I Not Losing Weight on a Calorie Deficit? Key Causes Explained

Could Ozempic Cause Seizures? UK Evidence and Safety Guidance

When to Resume Mounjaro After Surgery: UK Guidance

Normal Value of Vitamin B12: UK Reference Ranges and Testing

Does Victoza Stop Working for Weight Loss? Causes and Solutions

Allergy Medical Group: Tests, Treatment & When to Refer

Can Pain Affect Your HbA1c? Chronic Pain, Stress and Blood Sugar

Diabetes, MDD, GAD, and HbA1c: What You Need to Know

Does Lamictal Cause Erectile Dysfunction? Evidence and Management

How Long Does Tadalafil Stay in Your System?

Where to Inject Saxenda: Sites, Technique & Rotation

Personalized weight management for women