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Guides •

What is BMR? How do you calculate yours?

Your basal metabolic rate (BMR) is the number of calories your body burns at rest to keep you alive - powering your heart, brain, breathing, and digestion.


Knowing your BMR helps you understand your body’s energy needs so that you can make more informed choices about nutrition, exercise, and weight management.


Here, we’ll take a look at precisely what BMR is and how to calculate yours. You can also use our calculator to find yours now.




BMR stands for Basal Metabolic Rate. It’s th...
Guides •

How Long Does Wegovy Take to Work?

Wegovy starts working right away, but most people start noticing visible changes within the first 4–8 weeks.


How much weight you’ll lose will depend on your diet, calorie intake, exercise habits, metabolism, dose adjustments, and starting weight. For most people, significant weight loss starts after around 12 weeks of taking the medication once weekly. 


In this guide, we’ll show you a timeline of what to expect at each stage of your treatment, what factors can influence your progress, and...
Guides •

Wegovy Side Effects and How to Treat Them 

Like any medication, Wegovy can cause side effects. For most people, they’re mild and tend to settle on their own. Everyone’s experience is different, however, and knowing what to expect can help you start treatment with confidence.  


Most people find that any side effects ease over time as their body adjusts, but there are still plenty of simple tips and tricks that can make things easier along the way. 


In this guide, we’ll walk you through how common certain Wegovy side effects are, how...
Guides •

Do Steroids Cause Hair Loss?  

There are many different types of steroids, some of which are prescribed legally to treat a variety of medical conditions, and some of which people use for performance enhancement. 


Both types of steroids can cause hair loss in men and women. However, confusingly, sometimes steroid injections can also be prescribed to treat certain types of hair loss. 


In this guide, we’ll explain which kinds of steroids cause hair loss, how injections are used to treat hair thinning, and which hair loss t...
Guides •

How Does Viagra Work?

Viagra is the branded version of the medicine sildenafil, which is designed to treat erectile dysfunction (ED). 


While there are several medicines that can help with ED, Viagra’s little blue pill is perhaps the most well-known treatment for helping men “rise to the occasion”.  


As a result, if you struggle with ED, you may have considered whether taking Viagra could be right for you. Before making your decision, it can be helpful to understand how Viagra works, when to use it and how long...
Guides •

Viagra Side Effects and How to Avoid Them 

Viagra is the brand name for a medicine called sildenafil, used primarily to treat erectile dysfunction (ED). The active ingredient, sildenafil, is also sometimes used to treat pulmonary hypertension in men and women.  


Viagra is an extremely effective medication. When used for ED, it works by increasing the blood flow to your penis to help you get an erection when you’re aroused. It has been found to help around 80% of users get an erection. 


For pulmonary hypertension, sildenafil, used a...
Guides •

Tadalafil Side Effects: Everything You Need to Know  

If you’re struggling to get or maintain an erection, it’s important to know that you’re not alone. While erectile dysfunction (ED) is particularly common in men over 40, it can affect men of any age.  


While struggling to get an erection isn’t necessarily a cause for concern, it can have a significant impact on your sex life and your relationships. So, you may be looking to find a treatment that works for you.  


You’ve probably heard of Viagra (sildenafil), the most popular treatment for E...
Guides •

How to Get an NHS Prescription Prepayment Certificate (PPC)  

Even if you’re not eligible to get your NHS prescription for free, you can still save money on your meds with an NHS Prescription Prepayment Certificate (PPC). 


Below, we take you through how to get an NHS prepayment certificate, the different types available, and how to use it with your Chemist4U account.  


An NHS Prescription Payment Certificate essentially allows you to receive a bulk discount on your prescriptions if you know you’ll need to pay for multiple medications in the coming mo...
Guides •

How Long Does Viagra Last?  

Erectile dysfunction is a very common health issue that most men will experience at some point in their lives. It affects around 50% of men aged between 40 and 70. 


Viagra one of the most well-known medications for erectile dysfunction. It comes in pill form in doses of 25mg, 50mg, and 100mg. It works by improving blood flow to the penis to help you get and maintain an erection during sex. 


Viagra typically takes around 30-60 minutes to act and helps you get an erection, which lasts around...
Guides •

How Long Does Tadalafil Last?  

An alternative to Viagra, tadalafil is the longest-lasting erectile dysfunction pill on the market, giving you greater freedom when having sex. 


In this guide, we’ll take a look at how long tadalafil lasts on average, when best to take it before having sex, and which dosage is right for you.  





Tadalafil generally starts to take effect in 30-60 minutes. 


This means it’s similar to most other erectile dysfunction pills. Only Spedra, which contains the active ingredient avanafil, gets...
Guides •

Mental Health and Motivation in Maintenance

Reaching your goal weight is a big achievement, but maintaining this progress can bring new emotional challenges and requires a shift in your mindset.


That’s why we’ve written this guide to support your mental and emotional wellbeing through the maintenance phase.


Let's unpack how to manage the emotional ups and downs of the maintenance phase, handle setbacks, set new goals, and stay confident in your progress.


One of the less-talked-about aspects of maintenance is managing the emotions...
Guides •

Tadalafil Dosages Explained

These days, there are lots of options to treat erectile dysfunction (ED) – not just Viagra. For example, you could consider tadalafil, a more affordable generic version of the branded drug Cialis. 


In this guide, we’ll take you through the different tadalafil dosages on the market, which dose works best for each situation, and the most effective time to take it.  





If you’re taking tadalafil for ED, there are four dosage strengths available: 


Tadalafil 2.5mg dosage is the lowest stre...
Guides •

Does Mounjaro Cause Hair Loss?

Scientific research has shown only around 5-10% of people experience hair loss when taking Mounjaro, and this hair loss often goes away on its own within the first few months of treatment.


Here, we’ve put together a full guide on everything you need to know about Mounjaro hair loss. We’ll cover how common it is, the causes, how long it lasts, and how to prevent and reverse hair shedding.


We’ll also explore the stages of hair growth, look at how shedding works, and answer some FAQs.


Hair...
Guides •

Can Stress Cause Hair Loss?  

If you’ve noticed that you’re losing your hair, you may be wondering why. There are several potential underlying causes we could talk about, from menopause to genetics. But is stress one of them? The answer is yes.  


Chronic stress can affect many aspects of your health, including your hair growth. But why does stress affect hair loss? And will your hair grow back?  Fortunately, our guide covers everything you need to know about stress and hair loss.  





There are three types of stress-r...
Guides •

Does Finasteride Work?  

Treatments that claim to stop, or even reverse, hair loss might sound too good to be true. Surely they’re just the stuff of dodgy tube ads and snake oil salesmen? Not so! 


There are multiple legitimate hair loss treatments you can consider, including finasteride tablets. 


But how well does finasteride work? And how long does it take to regrow hair? Read our expert guide to find out more.  


Finasteride is a 5-alpha reductase inhibitor. Which is the scientific way of saying it stops the m...
Guides •

Cialis vs Viagra: How Do They Differ? 

Erectile dysfunction (ED) is a very common problem for men. Around half of all people born male between 40 and 70 will deal with it at some point.  


Luckily, there are plenty of treatments available for erectile dysfunction to help you feel like yourself when the moment arrives. 


Cialis and Viagra are both ED medications that work by increasing blood flow to the penis to help you get hard and stay hard. Which one is right for you will depend on your lifestyle, and how you intend to use it....
Guides •

Apretude Explained: Dosage, Side Effects, NHS

The introduction of PrEP (pre-exposure prophylaxis) revolutionised the prevention of sexually transmitted HIV-1 infections. 


But whether it’s due to allergies, other medications, an inability to swallow tablets, or adherence challenges, it’s not suitable for everyone.    


Apretude is a newly-approved medication that acts as an alternative for those people who can’t take PrEP tablets.  And as of October 2025, it’s now available on NHS prescription in England, Scotland and Wales.  


Let’s...
Guides •

Portion Control That Actually Works  

A lot of people think portion control just means eating less, but really, it’s all about eating smarter.  


When you’re on Mounjaro or Wegovy, your appetite will reduce as an effect of the medication. But developing portion control habits now will help you to keep off the weight you lose and maintain results later.  


This guide explains how portion control works, why it’s important, and simple, practical ways to build it into your daily habits. 





Portion control helps you to eat mindf...
Guides •

Mounjaro Supplements

You may be considering taking supplements while you’re on Mounjaro but you likely won't need to. It's possible to get everything you need from a well-rounded diet. 


But if reduced appetite, or side effects like nausea, heartburn, or indigestion are making it challenging to get all the nutrients you need from your diet, supplements can help you meet your nutrient needs and minimise side effects like constipation and diarrhoea. 


In this guide, we’ll look at when and why to take supplements,...
Guides •

Does Finasteride Lower Testosterone?  

Some people believe that finasteride lowers testosterone because of how it tackles hair loss. But this isn’t true! 


In fact, finasteride actually causes a slight increase in testosterone levels when used to treat male pattern baldness.  


Let’s take a deeper look at the relationship between finasteride and testosterone, and some of the other myths that surround the two. 





Male pattern baldness is caused by a hormone called DHT.  


Your body makes DHT from testosterone using an enzym...
Guides •

Mounjaro vs. Ozempic – What is the difference?

Ozempic is a brand name for semaglutide used to treat type 2 diabetes. The UK brand name for the medication which uses the same active ingredient (semaglutide), for weight loss treatment is Wegovy.  


Mounjaro is currently one of the newer, more popular, weight loss treatments that has been shown to be slightly more clinically effective.  


But what actually is Ozempic, and how does it compare to other weight loss injections on the market like Mounjaro?  


While they both work similarly to...
Guides •

Oral Minoxidil vs Topical Minoxidil: What's Right for You?  

Early signs of hair loss can impact your confidence. Luckily, there are plenty of options these days not only to stop hair loss but reverse it.  


Minoxidil is one of these options. It promotes blood flow to activate dormant hair follicles and turn back the clock on thinning hair. It’s available in topical form, usually as a foam or spray applied directly to the scalp, and as an oral tablet. 


So read on below, where we compare oral minoxidil versus topical minoxidil, including their side ef...
Guides •

What's the Right Viagra Dosage For Me?  

If you’re thinking about taking Viagra for erectile dysfunction, you’ll want to get the dosage right. And that’ll depend on a few factors. 


The right amount to take varies from person to person and is based on things like whether you’ve had side effects taking Viagra in the past, any related health conditions you have, and if you’re taking any other medications.  


In this guide, we’ll break down everything you need to consider to help you find the right Viagra dose for your bedroom needs....
Guides •

Nutrition and Diet for Maintenance: Staying on Track After Weight Loss  

Focusing on good diet that's not just nutritious but enjoyable enough to keep your tastebuds and your muscles satisfied is one of your most powerful long-term tools for maintenance.


Maintenance is all about staying consistent for the long term and keeping the motivation you built during your weight loss journey. It’s about finding healthy eating habits that fit into your life, help you stay energised, and make it easier to stick to your goals without slipping back into old routines.


Let’s...
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About Me

Journalist, editor, and copywriter specialising in science and health content. 

I hold a master's degree with distinction in professional writing from Falmouth University. 

Experienced in many areas of medical writing and editing, I am particularly interested in the relationship between mental and physical health, the social determinants of health, and how technology can help autonomise health and wellbeing and remove barriers to access.