Bolt Guides

Expert insights on weight loss and more.

Featured

Saxenda Pen Left Out of Fridge: Storage Guide

GLP-1 Brands

min read

Saxenda Pen Left Out of Fridge: Storage Guide

Left your Saxenda pen out of the fridge? Find out how long it stays safe, signs it may be damaged, and UK storage guidelines to protect your medication.

Read now

Weight loss

Read all on weight loss

Estimated Average Glucose from HbA1c: UK Guide to Your Results

Weight Loss

min read

Estimated Average Glucose from HbA1c: UK Guide to Your Results

Estimated average glucose from HbA1c explained: learn how eAG is calculated, what your result means, UK reference ranges, NICE guidance, and when to contact your GP or diabetes team.

Does Propecia Cause Gynaecomastia? UK Guide to Finasteride and Breast Changes

Weight Loss

min read

Does Propecia Cause Gynaecomastia? UK Guide to Finasteride and Breast Changes

Does Propecia cause gynaecomastia? Learn how finasteride affects hormone levels, how common breast changes are, MHRA guidance, and what to do if you notice symptoms.

Blurred Vision After Gastric Sleeve: Causes, Risks & NHS Guidance

Weight Loss

min read

Blurred Vision After Gastric Sleeve: Causes, Risks & NHS Guidance

Blurred vision after gastric sleeve surgery can signal nutritional deficiencies or metabolic changes. Learn the causes, when to seek urgent help, and how NHS guidance can protect your eyesight.

Read all on weight loss

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

Saxenda Pen Left Out of Fridge: Storage Guide

Left your Saxenda pen out of the fridge? Find out how long it stays safe, signs it may be damaged, and UK storage guidelines to protect your medication.

Read now

Victoza Weight Loss: What the Evidence Shows

GLP-1 Brands

min read

Victoza Weight Loss: What the Evidence Shows

Discover how much weight you can lose on Victoza, what clinical trials show, and when to see your GP. UK evidence-based liraglutide guidance.

Does Saxenda Show in Blood Tests? Patient Guide

GLP-1 Brands

min read

Does Saxenda Show in Blood Tests? Patient Guide

Does Saxenda show on blood tests? Learn what UK patients need to know about GLP-1 detection, drug screening and monitoring.

Retatrutide Liver Fat Reduction: Evidence, Safety, and UK Regulatory Status

GLP-1 Brands

min read

Retatrutide Liver Fat Reduction: Evidence, Safety, and UK Regulatory Status

Retatrutide liver fat reduction: discover how this investigational triple agonist works, what Phase 2 clinical evidence shows, who may benefit, its safety profile, and current UK regulatory status.

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

HIV and Erectile Dysfunction: Understanding the Link

Find out how HIV can affect sexual function, including the biological, psychological and medication-related causes of ED and when to seek medical advice.

Read now

Is It OK to Put Testogel on Straight After Shower?

Testosterone

min read

Is It OK to Put Testogel on Straight After Shower?

Is it safe to apply Testogel straight after showering? Discover the optimal timing for testosterone gel application, why skin dryness matters for absorption, and expert tips to maximise treatment efficacy whilst avoiding common mistakes.

How Long Does Testogel Take to Work? UK Guide

Testosterone

min read

How Long Does Testogel Take to Work? UK Guide

Discover how long Testogel takes to work, from initial absorption to noticeable improvements in energy, libido, and muscle mass. Learn about factors affecting response time, monitoring requirements, and what to expect during testosterone replacement therapy in the UK.

Can You Put Testogel On Twice a Day? UK Dosing Guidance

Testosterone

min read

Can You Put Testogel On Twice a Day? UK Dosing Guidance

Can you apply Testogel twice daily? Discover why this testosterone gel is licensed for once-daily use in the UK, the risks of increasing application frequency without medical advice, and how to optimise your treatment safely under proper supervision.

Weight Loss

min read

Weight Loss and Yasmin Pills: Benefits, Evidence, and Risks Explained

Weight loss and Yasmin pills explained: discover what the clinical evidence really shows about fluid retention, drospirenone's unique properties, side effects, and when to speak to your GP.

Erectile Dysfunction

min read

Is Cacao Powder Good for Erectile Dysfunction? Evidence Review

Is cacao powder good for erectile dysfunction? Explore the scientific evidence behind cacao's cardiovascular effects, its potential impact on erectile function, and why medical assessment remains essential for ED management.

Erectile Dysfunction

min read

Do Antidepressants Cause Erectile Dysfunction? UK Guide

Do antidepressants cause erectile dysfunction? Discover which antidepressants affect erections most, why sexual side effects occur, and evidence-based management strategies. Learn when to speak to your GP and explore treatment options that protect both mental health and sexual function.

UV Lamps for Vitamin D: Safety, Risks and NHS Guidance

Supplements

min read

UV Lamps for Vitamin D: Safety, Risks and NHS Guidance

Discover whether UV lamps for vitamin D are safe and effective. Learn about NHS guidance, health risks including skin cancer, and why oral supplementation is recommended over UV exposure in the UK.

Erectile Dysfunction

min read

Peyronie's Disease & Erectile Dysfunction: UK Guide

Peyronie's disease affects up to 54% of men. Discover how penile plaques cause ED, pain & venous leak — and UK treatments available.

Erectile Dysfunction

min read

Do ACE Inhibitors Cause Erectile Dysfunction? Evidence and Management

Do ACE inhibitors cause erectile dysfunction? Discover the evidence on ACE inhibitors and sexual function, how they compare to other blood pressure medications, and what to do if you experience ED whilst taking these drugs.

Calorie Deficit While Injured: What You Need to Know

Weight Loss

min read

Calorie Deficit While Injured: What You Need to Know

Calorie deficit while injured — is it safe? Learn how injury changes your energy needs, which nutrients support healing, and how to manage body composition without slowing recovery.

Are Raisins Good for Fatty Liver Disease? Evidence and Guidance

Weight Loss

min read

Are Raisins Good for Fatty Liver Disease? Evidence and Guidance

Are raisins good for fatty liver disease? Discover what the evidence says about dried fruit, sugar content, and liver health. Expert guidance on dietary management for NAFLD with practical advice on portion control and better fruit choices for supporting your liver.

Is Fish Healthy for You? NHS Guidance and Benefits

Supplements

min read

Is Fish Healthy for You? NHS Guidance and Benefits

Is fish healthy for you? Discover the proven health benefits of eating fish, NHS recommendations on portions and frequency, which types are healthiest, and important safety considerations for different population groups including pregnancy.

Erectile Dysfunction

min read

Does Radiation for Prostate Cancer Cause Erectile Dysfunction?

Does radiation for prostate cancer cause erectile dysfunction? Discover how radiotherapy affects sexual function, who's at risk, and evidence-based treatments available on the NHS to manage ED after prostate cancer treatment.

Weight Loss

min read

Fenamin Weight Loss Pills: UK Safety, Risks, and NHS Alternatives

Fenamin weight loss pills are not licensed by the MHRA in the UK — find out what this means for your safety, the risks of unlicensed slimming products, and which NHS-approved options are available.

Weight Loss

min read

Weight Loss Pills for Endometriosis: Safety, Risks and NHS Guidance

Weight loss pills for endometriosis — find out which are safe, how endometriosis affects weight, what NHS treatments are available, and when to speak to your GP.

How Does Fasting Work? Benefits, Types & Safety

Weight Loss

min read

How Does Fasting Work? Benefits, Types & Safety

Discover what fasting does to your body — from fat burning and autophagy to hormonal shifts. Learn the types, rules, and who should avoid fasting.

Are Beans Good for a Calorie Deficit? UK Nutrition Guide

Weight Loss

min read

Are Beans Good for a Calorie Deficit? UK Nutrition Guide

Are beans good for a calorie deficit? Discover how beans support weight loss with high fibre and protein, plus UK nutritional values, meal ideas, and NHS-backed dietary guidance.

Xanax and Allergy Medication: Interactions, Risks, and Safer Alternatives

Supplements

min read

Xanax and Allergy Medication: Interactions, Risks, and Safer Alternatives

Xanax and allergy medication taken together can cause dangerous sedation and breathing problems. Learn which antihistamines interact with alprazolam, warning signs to watch for, and safer alternatives — with NHS and MHRA guidance.

Bolt Guides

Featured

Saxenda Pen Left Out of Fridge: Storage Guide

Weight loss

Estimated Average Glucose from HbA1c: UK Guide to Your Results

Does Propecia Cause Gynaecomastia? UK Guide to Finasteride and Breast Changes

Blurred Vision After Gastric Sleeve: Causes, Risks & NHS Guidance

GLP-1 Brands

Wegovy

Mounjaro

Saxenda Pen Left Out of Fridge: Storage Guide

Victoza Weight Loss: What the Evidence Shows

Does Saxenda Show in Blood Tests? Patient Guide

Retatrutide Liver Fat Reduction: Evidence, Safety, and UK Regulatory Status

Men’s Health

Testosterone

Erectile dysfunction

HIV and Erectile Dysfunction: Understanding the Link

Is It OK to Put Testogel on Straight After Shower?

How Long Does Testogel Take to Work? UK Guide

Can You Put Testogel On Twice a Day? UK Dosing Guidance

Browse all

Weight Loss and Yasmin Pills: Benefits, Evidence, and Risks Explained

Is Cacao Powder Good for Erectile Dysfunction? Evidence Review

Do Antidepressants Cause Erectile Dysfunction? UK Guide

UV Lamps for Vitamin D: Safety, Risks and NHS Guidance

Peyronie's Disease & Erectile Dysfunction: UK Guide

Do ACE Inhibitors Cause Erectile Dysfunction? Evidence and Management

Calorie Deficit While Injured: What You Need to Know

Are Raisins Good for Fatty Liver Disease? Evidence and Guidance

Is Fish Healthy for You? NHS Guidance and Benefits

Does Radiation for Prostate Cancer Cause Erectile Dysfunction?

Fenamin Weight Loss Pills: UK Safety, Risks, and NHS Alternatives

Weight Loss Pills for Endometriosis: Safety, Risks and NHS Guidance

How Does Fasting Work? Benefits, Types & Safety

Are Beans Good for a Calorie Deficit? UK Nutrition Guide

Xanax and Allergy Medication: Interactions, Risks, and Safer Alternatives

Personalized weight management for women