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Activated charcoal guide: Benefits, uses, supplements & more

23 Nov 2022 • 4 min read


If you’ve avoided the online chatter or missed the regular TV features, you might be wondering why we’re talking about activated charcoal, or whether it’s the same as the charcoal you use on your BBQ.

Wonder no more, as it’s actually quite different. Here, we take a look at some of the main activated charcoal benefits, from how it can help with everything, from teeth whitening to flatulence. We also share lots of other activated carbon-related insight too.

What is activated charcoal?

Activated charcoal is a fine black powder that’s made when materials that contain carbon, such as wood, are heated to a high temperature to create charcoal, which is a process that’s also known as activation.

This process increases the surface area of the charcoal and creates pores that are capable of absorbing toxins and other substances.1

There are all sorts of benefits to using activated charcoal within your beauty regime, keep reading for details of what some of the main benefits are, plus more activated charcoal insight.

But before we move on, there’s just one thing we want to clear up, activated charcoal isn’t the same as the charcoal you use for your BBQ.2

While it’s possible to make both types of charcoal from the same base materials, barbecue charcoal hasn’t been activated at high temperatures in the same way that activated charcoal has.

What’s more, barbecue briquettes contain additional substances that are toxic to humans.


Activated charcoal is charcoal, or carbon, that’s made by heating charcoal to a high enough temperature so that it oxidises/activates. It’s not to be confused with the charcoal you put on your barbecue.

Handpicked article: Charcoal: A trending ingredient

What does activated charcoal do?

As we mentioned a bit further up, the activation process creates lots of small holes on the surface of the charcoal. At the same time, it also expands and becomes more porous.

This means that activated charcoal essentially acts as a sponge, soaking up all sorts of different chemicals from within the body and on the skin. It’s sponge-like qualities are one of the reasons why it’s used in a number of filtration products, such as water filters.3

What is activated charcoal used for?

Historically, activated charcoal has been used as an emergency medicine to treat drug overdoses and accidental poisoning.

If the right amount is given quickly enough, it binds with drugs and poisons, reducing how much poison or medication is absorbed by the gut. In turn, this can help minimise how much damage is caused to the body.4

More recently, activated charcoal has been increasingly used in detoxing health products.

For instance, in toothpastes, detox juices, face masks, deodorants, body washes and hair products, as well as supplements for issues, such as bloating and flatulence.

While activated charcoal is a high-trending supplement and beauty ingredient, there’s limited scientific research to evidence all of the claims that are associated with it.

However, most products do come with customer reviews, which can help you to gauge their effectiveness and determine which product to go for.


Activated charcoal has long been used by medical professionals to treat drug overdoses and poisoning due to the way it binds to substances and prevents the body from absorbing them. More recently, activated charcoal has increasingly become available in many other forms.

Eating activated charcoal

Activated charcoal food has become all the rage on Instagram and other social feeds in recent months, but does that mean it’s ok to eat?

It’s believed that eating small amounts of charcoal shouldn’t cause any harm or involve many side effects. However, the long-term impact of higher doses has yet to be studied.

You may already be aware of the activated charcoal supplements that are available that come with their own set of dosage and usage guidance (more on doses below).5

And while activated charcoal may be widely used to treat poisoning and drug overdoses by medical professionals, because of its ability to bind to the substance before your body absorbs it, there’s no stopping it from binding to other things within your body too.

For instance, vitamins, such as Vitamin C and minerals. It can also possibly prevent your body from fully absorbing any medications you may be taking.6

As for the types of activated food that’s out there, there appears to be no end of ways for adding it to meals. Examples include, activated charcoal:7

  • Ice cream
  • Pizza bases
  • Yoghurt
  • Burger buns
  • Lattes
  • Tea
  • Bread
  • Macarons
  • Juice
  • Bagels
  • Waffles


It’s possible to eat activated charcoal, but ideally, only in small amounts. Meanwhile, activated food has become increasingly common, with people dining on charcoal ice cream, pizza, and even, activated charcoal burgers and tea. 

9 benefits of activated charcoal

  1. Brightening up teeth

When activated charcoal is brushed on to the teeth it absorbs plaque, bacteria and stains from the teeth and gums. It can help combat cavities, bad breath and gum disease, and create a sparkling smile; perfect for those Insta-worthy moments.

  1. Fighting some of the signs of ageing

Activated charcoal absorbs toxins in the skin, which helps to prevent premature ageing. It’s one of the reasons why activated charcoal skincare is so popular with people wanting to maintain a youthful glow.

  1. Cleaning wounds and reducing itchiness from bites and stings

Activated charcoal is antibacterial and anti-inflammatory, which means it can reduce pain and swelling caused by bites and stings.

Applied topically, its porous properties absorb toxins from below the skin’s surface. You can either use an activated charcoal wipe or mix a little charcoal powder with water and apply it as a paste, before removing the mixture with a damp, clean cloth.

  1. Banishing oily skin

If you have oily skin, activated charcoal might just be the thing you need to help manage it.

The charcoal in activated charcoal face masks and cleansers absorbs unwanted excess oils, which can leave skin feeling smooth and less oily.

Handpicked content: Best cleanser for oily skin

  1. Preventing bloating and alleviating gas

When consumed in tablet or capsule form, activated charcoal absorbs bacteria in the intestines and can relieve bloating, discomfort and flatulence.

It works by binding with by-products within the intestines that cause the discomfort and is best taken two hours before a meal or one hour after eating.

  1. Reducing cholesterol levels

Activated charcoal may also help reduce cholesterol levels due to the fact it can bind cholesterol and cholesterol-containing bile acids in the gut, preventing the body from absorbing them.8

According to one study, taking 24g of activated charcoal a day for four weeks lowered total cholesterol by 25% and bad LDL cholesterol by 25%. Good HDL cholesterol levels also increased by 8%.

  1. Filtering water

Activated charcoal is widely used to reduce heavy metal and fluoride content in water because it can trap carbon-based impurities, as well as chlorine. Once fully bonded, activated charcoal filters do stop working, so you’ll need to replace the filter.9 10

  1. Treating wounds

Activated charcoal may help wounds to heal due to the fact it can possibly draw toxins and other harmful properties out of the wound.

A four-week study involving 60 people found that when used in wound dressings, activated charcoal and silver helped purge harmful fluids and toxins from chronic venous leg ulcers, helping them to heal.11

  1. Preventing diarrhoea

Due to activated charcoal’s ability to trap toxins in the gut, it’s believed it may be able to prevent diarrhoea-causing bacteria and drugs from being absorbed by the body.

A review published in December 2017 in the Current Medical Research and Opinion concluded that activated charcoal is a suitable treatment option for diarrhoea, particularly because it has relatively few side effects compared with other anti-diarrheal treatments.12


Activated charcoal can deliver many benefits that range from treating wounds, easing gas and whitening your teeth, to preventing diarrhoea and helping to bring cholesterol levels down.

Activated charcoal side effects

The side effects of taking activated charcoal are believed to be minimal, especially if it’s being taken on a short-term basis and in small amounts.

However, if taken orally on a long-term basis, it may cause:13

  • Black stools
  • A black tongue
  • Vomiting or diarrhoea
  • Constipation
  • And, in more serious cases, gastrointestinal blockages

Activated charcoal dosage

The dosage depends on what you are taking activated charcoal for. For instance, for gastrointestinal decontamination, doctors might prescribe anywhere from 50 to 100g.

For intestinal gas, the dosage could range from 500 to 1,000mg a day. A lower daily dose of 4 to 32g is recommended for lowering cholesterol levels.14

As is the case when taking all medication and supplements, speak to your GP and follow their advice on how much to take and follow the manufacturer’s guidance too.

Note – drinking more water while taking activated charcoal may help prevent you from becoming constipated.15


The side effects associated with taking smaller amounts of activated charcoal for a short period of time are reportedly minimal. However, if taken on a long-term basis, it may cause side effects, such as constipation and vomiting.

Is activated coconut charcoal the same?

Activated coconut charcoal is capable of having the same detoxifying effects as activated charcoal but, as the name suggests, it’s not made from the same materials.17 While charcoal can be made from coal, wood, or other substances, activated coconut charcoal is made from coconut shells.

When to use activated charcoal supplements

Activated charcoal medication can be taken as tablets or capsules, while activated charcoal supplements can be taken as tablets or a powder that’s mixed with water or juice to create a drink.

Because activated charcoal may interfere with the absorption of nutrients, other supplements and prescription medications, it should be taken on an empty stomach 60 to 90 minutes prior to meals and taking any other supplements or prescription medications.16


Always take activated charcoal supplements on an empty stomach around 60 to 90 minutes before eating or taking any other supplements or medication. This will help make sure it doesn’t prevent your body from absorbing other nutrients/supplements/medication properly.


While activated charcoal has been historically used by medical professionals to help prevent drugs and poisons from being absorbed by the body, there are many more benefits associated with using it.

And while the list of benefits linked to it have increased over the years, so too have the many ways in which it’s used, from supplements and skincare, to toothpaste, and even, food.

Whether you’re looking for a supplement to help ease flatulence and a bloated stomach, seeking a natural beauty product to clear up your skin, or fancy an snack with a difference, activated charcoal products could be just the thing you need.

Share your activated charcoal stories on Instagram, Pinterest and Twitter with #MyHB and #ChangeToCharcoal.

Now that you’re here, we think you might find this article useful, ‘Banish body odour with activated charcoal.’ Believe it or not, activated charcoal can also be used to help beat body odours, and this post has all the details.

The advice in this article is for information only and should not replace medical care. Please check with your GP or healthcare professional before trying any supplements, treatments or remedies. Food supplements must not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

Last updated: 7 June 2021



Author: Donia HilalNutritionist

Joined Holland & Barrett: Jan 2018

Bsc in Nutrition, Registered Associate Nutritionist and Certification in Pre and Post Natal Nutrition

Donia started her career as a freelance nutritionist, later she joined Nestle as their Market Nutritionist to help support their healthier product range, before joining the team at Holland & Barrett in January 2018.

Donia has over 6 years experience as a Nutritionist and also works with clients on a one to one basis to support their goals which include weight loss, prenatal and postnatal nutrition and children’s health.

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