Bolt Guides

Expert insights on weight loss and more.

Featured

Vitamin K Trade Name: Konakion & UK Clinical Use

Supplements

min read

Vitamin K Trade Name: Konakion & UK Clinical Use

Discover UK trade names for vitamin K, including Konakion MM, plus formulations, doses, and clinical uses for neonates and warfarin reversal.

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Weight loss

Read all on weight loss

HbA1c Normal but OGTT High: Causes, Diagnosis, and NHS Next Steps

Weight Loss

min read

HbA1c Normal but OGTT High: Causes, Diagnosis, and NHS Next Steps

HbA1c normal but OGTT high? Discover why these results can conflict, what it means for your diabetes risk, and the NHS-recommended next steps for diagnosis and management.

Gastric Sleeve Operation Pensacola: Eligibility, Risks and Recovery

Weight Loss

min read

Gastric Sleeve Operation Pensacola: Eligibility, Risks and Recovery

Gastric sleeve operation in Pensacola explained — eligibility criteria, what to expect before and after surgery, risks, diet, and how to find accredited bariatric services. Read our clinically reviewed guide.

Decrease in HbA1c with Bydureon: Evidence, Expectations & NICE Guidance

Weight Loss

min read

Decrease in HbA1c with Bydureon: Evidence, Expectations & NICE Guidance

Decrease in HbA1c with Bydureon: discover what reductions to expect, clinical trial evidence, NICE NG28 prescribing criteria, and how to monitor your diabetes management on the NHS.

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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

Ozempic Face: Does Semaglutide Make You Look Old?

Learn what causes 'Ozempic face', why rapid weight loss affects facial volume, and how to manage facial ageing changes during semaglutide treatment.

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Ozempic Face: Does Semaglutide Make You Look Old?

Trulicity Mechanism of Action: How It Controls Blood Sugar

GLP-1 Brands

min read

Trulicity Mechanism of Action: How It Controls Blood Sugar

Discover how Trulicity's mechanism of action works to control blood sugar in type 2 diabetes. Learn about GLP-1 receptor activation, insulin secretion, glucagon suppression, and clinical effects on glucose and weight management.

Saxenda Side Effects: Nausea, Sickness & Management

GLP-1 Brands

min read

Saxenda Side Effects: Nausea, Sickness & Management

Nausea affects 40% of Saxenda users. Learn why it happens, how long it lasts, and how to manage this GLP-1 side effect during treatment.

GLP-1 & Libido: Saxenda, Tirzepatide & Sex Drive

GLP-1 Brands

min read

GLP-1 & Libido: Saxenda, Tirzepatide & Sex Drive

Do GLP-1 weight loss drugs affect libido? Explore UK clinical evidence on medicines like Saxenda and tirzepatide, plus when to see your GP.

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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 Sitagliptin Cause Erectile Dysfunction? Evidence and Guidance

Does sitagliptin cause erectile dysfunction? Discover the evidence on this DPP-4 inhibitor, how diabetes affects sexual health, and when to seek medical advice for ED.

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How Does Testogel Affect My Girlfriend: Transfer Risks and Prevention

Testosterone

min read

How Does Testogel Affect My Girlfriend: Transfer Risks and Prevention

Concerned about how Testogel might affect your girlfriend? Learn about testosterone transfer risks, potential effects on female partners, and essential precautions to prevent exposure. Expert UK guidance on safe use of topical testosterone therapy.

Does Testogel Cause You to Fail a Doping Test?

Testosterone

min read

Does Testogel Cause You to Fail a Doping Test?

Does Testogel cause you to fail a doping test? Discover how testosterone replacement therapy affects anti-doping tests, TUE requirements for athletes, detection methods, and UKAD/WADA regulations for competitive sport in the UK.

Does Anyone Use 2 Sachets of Testogel at a Time?

Testosterone

min read

Does Anyone Use 2 Sachets of Testogel at a Time?

Can you use two sachets of Testogel daily? Discover when two sachets may be prescribed for testosterone deficiency, how to apply them safely, essential monitoring requirements, and potential side effects. Evidence-based UK guidance for patients.

Vitamin D Injections: NHS Access, Uses and Safety

Supplements

min read

Vitamin D Injections: NHS Access, Uses and Safety

Discover when vitamin D injections are medically necessary in the UK, how they work, who qualifies for NHS treatment, potential side effects, and safe access pathways for severe deficiency.

Sleeve Gastrectomy vs Roux-en-Y Gastric Bypass: UK Evidence-Based Guide

Weight Loss

min read

Sleeve Gastrectomy vs Roux-en-Y Gastric Bypass: UK Evidence-Based Guide

Sleeve gastrectomy vs Roux-en-Y gastric bypass: compare how they work, weight loss outcomes, risks, NHS eligibility, and recovery. Evidence-based UK guide aligned with NICE and BOMSS guidance.

Saxenda and Kidney Disease: Safety & Risks

GLP-1 Brands

min read

Saxenda and Kidney Disease: Safety & Risks

Is Saxenda safe with kidney disease? Explore renal risks, monitoring needs, and alternative weight loss options with UK clinical guidance.

How Long Does Retatrutide Take to Work? Timeline and Evidence

GLP-1 Brands

min read

How Long Does Retatrutide Take to Work? Timeline and Evidence

How long does it take for retatrutide to work? Discover the phase 2 trial timeline, what to expect at each treatment stage, and the current UK availability of this investigational triple receptor agonist.

Wegovy

min read

Can You Take Bioma with Wegovy? Safety and Guidance

Can you take Bioma with Wegovy safely? Discover the evidence on combining probiotic supplements with semaglutide for weight management, potential interactions, and when to consult your GP.

Viagra After Gastric Sleeve Surgery: Safety, Evidence and Guidance

Weight Loss

min read

Viagra After Gastric Sleeve Surgery: Safety, Evidence and Guidance

Can you take Viagra after gastric sleeve surgery? Learn how sleeve gastrectomy affects sildenafil absorption, what the evidence shows, safety precautions, and when to seek medical advice.

Mounjaro

min read

Mounjaro and Lip Filler: Safety, Timing and Effects

Can you have lip filler whilst taking Mounjaro? Discover how tirzepatide affects facial volume, safety considerations for combining treatments, and expert guidance on timing dermal fillers during GLP-1 therapy for optimal aesthetic results.

Allergy Medication While Breastfeeding: Safe Options and What to Avoid

Supplements

min read

Allergy Medication While Breastfeeding: Safe Options and What to Avoid

Allergy medication while breastfeeding: find out which antihistamines are NHS-recommended, which to avoid, and how to manage hay fever and allergic rhinitis safely whilst feeding your baby.

Do GLP-1 Medications Lose Effectiveness Over Time?

Weight Loss

min read

Do GLP-1 Medications Lose Effectiveness Over Time?

Do GLP-1 medications lose effectiveness over time? Discover why weight loss plateaus occur with semaglutide and liraglutide, what the evidence shows about long-term effectiveness, and practical strategies to maintain treatment benefits for diabetes and weight management.

Weight Loss

min read

Are Injections Better Than Pills for Weight Loss? UK Guide

Are injections better than pills for weight loss? Compare injectable GLP-1 agonists with oral options like orlistat on the NHS — evidence, side effects, eligibility, and costs explained.

Erectile Dysfunction

min read

Do Antipsychotics Cause Erectile Dysfunction? UK Guide

Do antipsychotics cause erectile dysfunction? Discover how antipsychotic medications affect sexual function, which drugs carry the highest risk, and evidence-based management strategies to maintain both mental health and sexual wellbeing.

Nails and Vitamin D: Effects, Deficiency Signs, and UK Guidance

Supplements

min read

Nails and Vitamin D: Effects, Deficiency Signs, and UK Guidance

Discover how vitamin D affects nail health, signs of deficiency in nails, recommended intake for healthy nails, and when to see your GP about persistent nail problems. Evidence-based UK guidance.

Weight Loss

min read

What to Eat on Weight Loss Injections: UK Dietary Guide

Discover what to eat on weight loss injections like Wegovy and Saxenda. Expert UK guidance on foods to choose, avoid, and how to manage side effects through diet whilst maximising treatment outcomes and maintaining proper nutrition.

Wegovy

min read

Can Wegovy Make You Lactose Intolerant? Exploring GLP-1's Impact on Weight Loss and Dairy Digestion

Explore if Wegovy can make you lactose intolerant. Understand the link, the symptoms, and how to manage any potential digestive changes effectively.

Can Fatty Liver Cause Headaches? Evidence-Based Answer

Weight Loss

min read

Can Fatty Liver Cause Headaches? Evidence-Based Answer

Can fatty liver cause headaches? Discover the evidence-based answer, why headaches may occur alongside fatty liver disease, and when to seek medical advice for your symptoms.

Bolt Guides

Featured

Vitamin K Trade Name: Konakion & UK Clinical Use

Weight loss

HbA1c Normal but OGTT High: Causes, Diagnosis, and NHS Next Steps

Gastric Sleeve Operation Pensacola: Eligibility, Risks and Recovery

Decrease in HbA1c with Bydureon: Evidence, Expectations & NICE Guidance

GLP-1 Brands

Wegovy

Mounjaro

Ozempic Face: Does Semaglutide Make You Look Old?

Trulicity Mechanism of Action: How It Controls Blood Sugar

Saxenda Side Effects: Nausea, Sickness & Management

GLP-1 & Libido: Saxenda, Tirzepatide & Sex Drive

Men’s Health

Testosterone

Erectile dysfunction

Does Sitagliptin Cause Erectile Dysfunction? Evidence and Guidance

How Does Testogel Affect My Girlfriend: Transfer Risks and Prevention

Does Testogel Cause You to Fail a Doping Test?

Does Anyone Use 2 Sachets of Testogel at a Time?

Browse all

Vitamin D Injections: NHS Access, Uses and Safety

Sleeve Gastrectomy vs Roux-en-Y Gastric Bypass: UK Evidence-Based Guide

Saxenda and Kidney Disease: Safety & Risks

How Long Does Retatrutide Take to Work? Timeline and Evidence

Can You Take Bioma with Wegovy? Safety and Guidance

Viagra After Gastric Sleeve Surgery: Safety, Evidence and Guidance

Mounjaro and Lip Filler: Safety, Timing and Effects

Allergy Medication While Breastfeeding: Safe Options and What to Avoid

Do GLP-1 Medications Lose Effectiveness Over Time?

Are Injections Better Than Pills for Weight Loss? UK Guide

Do Antipsychotics Cause Erectile Dysfunction? UK Guide

Nails and Vitamin D: Effects, Deficiency Signs, and UK Guidance

What to Eat on Weight Loss Injections: UK Dietary Guide

Can Wegovy Make You Lactose Intolerant? Exploring GLP-1's Impact on Weight Loss and Dairy Digestion

Can Fatty Liver Cause Headaches? Evidence-Based Answer

Personalized weight management for women