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OPTIFIBRE TIN

OPTIFIBRE TIN

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  • 5. Supports cardiovascular risk reduction
  • 6. Over 22 million patients treated with semaglutide-based therapies since 2018

  • ✔️ Supports bowel regularity with partially hydrolysed guar gum
  • ✔️ Tasteless and odourless — mixes invisibly into food or drink
  • ✔️ Acts as a prebiotic to nourish beneficial gut bacteria
  • ✔️ Suitable for adults and children over three years
  • ✔️ Gentle on the gut — no stimulant laxative effect

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What Is a Soluble Fibre Supplement and How Can OptiFibre Help?

 

Getting enough fibre from food alone isn't always easy. Busy schedules, dietary restrictions, and digestive conditions can all make it harder to hit the recommended 30 g of fibre per day that the NHS advises for adults. That's where a soluble fibre supplement like OptiFibre Tin can make a real difference. OptiFibre contains partially hydrolysed guar gum (PHGG) — a well-studied, plant-derived soluble fibre that dissolves completely in liquid, making it virtually tasteless and odourless. You can stir it into water, juice, or even soft food without noticing it's there. At just £20.99, it's a straightforward, no-fuss way to support your digestive health every day. If you're also exploring other gut-related products, our IBS and Cramps collection may be worth a look.

OptiFibre is manufactured to a high standard and is suitable for a wide range of people, including those managing constipation, irregular bowel habits, or simply looking to maintain digestive regularity. It's not a laxative — it works gently and consistently, which is why many healthcare professionals recommend it as part of a long-term dietary strategy.

 

How Does OptiFibre Work to Support Your Digestive System?

 

OptiFibre's active ingredient, partially hydrolysed guar gum, is a soluble dietary fibre derived from guar beans. When you mix it with liquid, it dissolves fully and passes into the gut, where it gets to work in several ways:

  • It absorbs water in the intestine, helping to soften stools and make them easier to pass.
  • It slows the transit of food through the gut, which can help regulate both constipation and loose stools.
  • It acts as a prebiotic, feeding beneficial bacteria in the large intestine and supporting a healthy gut microbiome.
  • It produces short-chain fatty acids during fermentation, which help nourish the cells lining the colon.

Unlike some bulking agents, PHGG is fully soluble and doesn't cause the gritty texture associated with other fibre supplements. This makes it particularly well-tolerated, even for people with sensitive digestive systems.

 

Who Should Consider Using OptiFibre Tin?

 

OptiFibre is suitable for a broad range of people. It's particularly useful if you struggle to get enough fibre through diet alone, or if you have a digestive condition that affects bowel regularity. It's also appropriate for those who find other fibre supplements unpalatable or difficult to take.

  • Adults experiencing constipation or irregular bowel movements
  • People with irritable bowel syndrome (IBS) who need gentle fibre support
  • Children aged 3 and over (under medical supervision)
  • Individuals on low-fibre diets due to medical or dietary restrictions
  • Those looking to support long-term gut health and microbiome balance

It is not suitable for people who have difficulty swallowing or who have a known allergy to guar gum. Always check with your pharmacist if you're unsure whether OptiFibre is right for you.

 

How Does OptiFibre Compare to Other Fibre Supplements?

 

Feature OptiFibre (PHGG) Ispaghula Husk (e.g. Fybogel)
Taste and texture Tasteless and odourless Flavoured; slightly gritty texture
Solubility Fully soluble in liquid and food Partially soluble; forms a thick gel
Prebiotic effect Yes — feeds beneficial gut bacteria Limited prebiotic activity
Suitable for IBS Yes, well-tolerated in IBS Yes, but may cause more bloating
Age suitability Adults and children over 3 Generally adults and older children

 

Is OptiFibre Safe to Store and Use Long Term?

 

OptiFibre Tin should be stored below 25°C in a dry place, away from direct sunlight, with the lid kept tightly closed after each use. When stored correctly, it remains stable until the expiry date printed on the tin. As a soluble fibre supplement, it can generally be used as part of a long-term dietary routine, though it's always sensible to review ongoing use with your pharmacist or GP — especially if your symptoms change. You might also find our Constipation collection helpful if you're looking for additional digestive support products.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

OptiFibre Tin specifications
Treatment category Digestive health / Dietary fibre supplementation
Active ingredient Partially hydrolysed guar gum (PHGG)
Mechanism of action Soluble fibre that softens stools, regulates bowel transit, and acts as a prebiotic
Suitable for Adults and children over 3 years
UK classification Food supplement / General sale
Preparation Powder (tin)
Route of administration Oral (dissolved in liquid or soft food)
Drug class Dietary fibre / Prebiotic

Specifications of OptiFibre Tin

 

What Is OptiFibre Tin and What Is It Used For?

 

OptiFibre Tin is a dietary fibre supplement containing partially hydrolysed guar gum (PHGG) as its active ingredient. It is used to increase daily fibre intake and support bowel regularity in people who do not get enough fibre from their diet. The NHS recommends that adults consume 30 g of dietary fibre per day, yet most people in the UK fall significantly short of this target. OptiFibre provides a convenient, tasteless way to bridge that gap.

It is used to help manage constipation, support digestive regularity in people with IBS, and maintain a healthy gut microbiome through its prebiotic action. Because it is fully soluble and flavour-neutral, it can be mixed into virtually any food or drink without altering taste or consistency.

 

What Do You Need to Know Before Using OptiFibre Tin?

 

Before using OptiFibre, read the following contraindications and warnings carefully:

  • Do not use if you have a known allergy or hypersensitivity to guar gum or any other ingredient in the product.
  • Not suitable for people with difficulty swallowing or conditions affecting the oesophagus.
  • Use with caution in people with bowel obstruction or suspected bowel obstruction — seek medical advice first.
  • Always drink adequate fluids (at least 1.5–2 litres per day) when taking fibre supplements to prevent the fibre from swelling in the throat or oesophagus.
  • Consult your GP before use if you have diabetes, as increased fibre intake may affect blood glucose levels.
  • Speak to your pharmacist or GP before use during pregnancy or breastfeeding.

Regarding drug interactions, PHGG may slow the absorption of some oral medicines if taken at the same time. Known considerations include:

  • Oral medications — separate OptiFibre doses from other medicines by at least one hour.
  • Diabetes medications — monitor blood glucose more closely, as fibre can affect glucose absorption.
  • No significant interactions with common OTC medicines have been reported, but always inform your pharmacist of all medicines you are taking.

 

How Should You Use OptiFibre Tin?

 

OptiFibre is simple to use. Follow these steps each time you take it:

  1. Measure the correct dose using the scoop provided in the tin.
  2. Stir the powder thoroughly into a glass of water, juice, or a soft food such as yoghurt or soup.
  3. Consume immediately once dissolved — do not allow it to sit for extended periods.
  4. Drink a full glass of water alongside or immediately after taking OptiFibre.
  5. Continue to drink plenty of fluids throughout the day (at least 1.5 litres).

If you are new to fibre supplements, start with a lower dose and increase gradually over one to two weeks. This helps your digestive system adjust and reduces the likelihood of bloating or wind. You may also find it helpful to browse our Vitamins and Supplements collection for complementary products to support your overall health.

Indication Age Group Dose Frequency
Constipation / bowel regularity Adults 1–2 scoops (approx. 5 g each) Once or twice daily
IBS / digestive support Adults 1 scoop (approx. 5 g) Once daily, increasing as tolerated
General fibre supplementation Children over 3 (medical supervision) As directed by a healthcare professional As directed

 

What Are the Possible Side Effects of OptiFibre Tin?

 

Like all fibre supplements, OptiFibre may cause some digestive side effects, particularly when you first start taking it. Most side effects are mild and tend to resolve as your body adjusts.

Common side effects:

  • Bloating
  • Flatulence (wind)
  • Mild abdominal discomfort
  • Loose stools (if dose is too high initially)

Less common side effects:

  • Nausea (usually if taken without sufficient fluid)
  • Allergic reaction — rare; symptoms may include rash, itching, or swelling
  • Difficulty swallowing if powder is not fully dissolved before consumption

If you experience any signs of a serious allergic reaction — such as swelling of the face, lips, or throat, or difficulty breathing — stop using OptiFibre immediately and seek urgent medical attention. The NHS advises contacting 999 or going to your nearest A&E in the event of a severe allergic reaction.

 

How Should You Store OptiFibre Tin?

 

  • Store below 25°C in a cool, dry place.
  • Keep away from direct sunlight and sources of heat.
  • Always replace the lid tightly after each use to prevent moisture absorption.
  • Keep out of the reach and sight of children.
  • Do not use after the expiry date printed on the tin.
  • Do not store in the bathroom or near a sink — humidity can affect the powder.

If you have any concerns about storage or the condition of the product, speak to your pharmacist. For related digestive health products, our Diarrhoea collection offers further options for managing bowel symptoms.

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy OptiFibre Tin online in the UK?

You can buy OptiFibre Tin online in the UK from Cured Pharmacy, a GPhC-registered online pharmacy, for £20.99. It is available without a prescription as an over-the-counter product. Simply add it to your basket and it will be dispatched directly to your door.

How does OptiFibre work in the body?

OptiFibre contains partially hydrolysed guar gum (PHGG), a soluble fibre that dissolves fully in liquid and forms a gel-like substance in the gut. This gel softens stools, slows gut transit to regulate bowel movements, and feeds beneficial gut bacteria as a prebiotic. It is one of the most well-tolerated soluble fibre supplement options available without a prescription.

How do I use OptiFibre Tin step by step?

Measure one scoop of OptiFibre powder using the scoop provided, then stir it thoroughly into a glass of water, juice, or soft food such as yoghurt. Drink it immediately and follow with a full glass of water. Repeat once or twice daily as needed, and always ensure you drink plenty of fluids throughout the day.

What is the correct dose of OptiFibre for adults?

The typical adult dose is one to two scoops (approximately 5 g each) per day, mixed into liquid or food. If you are new to fibre supplements, start with one scoop daily and increase gradually over one to two weeks. Always follow the directions on the product label or as advised by your pharmacist.

What is the best time to take OptiFibre?

There is no single "best" time — OptiFibre can be taken at any time of day that suits your routine. Many people find it easiest to take it with a meal, such as stirred into breakfast porridge or a morning drink. Consistency matters more than timing, so choose a time you can stick to daily.

What are the side effects of OptiFibre and how do I manage them?

The most common side effects are bloating and flatulence, particularly in the first few days of use as your gut adjusts to increased fibre. To manage these, start with a lower dose and increase slowly, and make sure you drink plenty of water throughout the day. If symptoms are severe or persistent, speak to your pharmacist.

Who is OptiFibre Tin suitable for?

OptiFibre is suitable for adults and children over 3 years who need additional dietary fibre to support bowel regularity. It is particularly useful for people with constipation, IBS, or those on low-fibre diets. It is not suitable for people with difficulty swallowing or a known allergy to guar gum.

Can I take OptiFibre if I have IBS?

Yes — OptiFibre is generally well-tolerated in people with IBS and is often recommended as a gentle fibre source for this condition. The NHS advises that increasing soluble fibre intake can help manage IBS symptoms such as constipation and irregular bowel habits. You can also explore our IBS and Cramps collection for additional support products.

What happens if I miss a dose of OptiFibre?

If you miss a dose, simply take it as soon as you remember — unless it is nearly time for your next dose, in which case skip the missed one. Do not double up doses to compensate. OptiFibre works best when taken consistently each day as part of your regular routine.

Can I take OptiFibre during pregnancy?

Constipation is common during pregnancy, and increasing dietary fibre is generally recommended by the NHS as a first-line approach. However, you should speak to your GP or midwife before starting any new supplement during pregnancy, including OptiFibre, to ensure it is appropriate for your individual circumstances.

How long can I use OptiFibre for?

OptiFibre can generally be used long term as part of a balanced diet to maintain digestive regularity. If your symptoms do not improve after two weeks of use, or if they worsen at any point, speak to your GP or pharmacist. Long-term use should be reviewed periodically with a healthcare professional.

Does OptiFibre interact with any medicines?

PHGG may slow the absorption of some oral medicines if taken at the same time. To avoid this, separate your OptiFibre dose from other medications by at least one hour. If you take medicines for diabetes or other chronic conditions, speak to your pharmacist before starting OptiFibre.

What are the alternatives to OptiFibre?

Common alternatives include ispaghula husk (such as Fybogel), methylcellulose (Celevac), and sterculia (Normacol). Each works slightly differently and suits different people. You can browse our Constipation collection to compare available options and find the right fit for your needs.

Is OptiFibre suitable for children?

OptiFibre can be used in children aged 3 and over, but only under the supervision and guidance of a healthcare professional. The dose for children will differ from the adult dose and should be determined by a GP or paediatric dietitian. Do not give OptiFibre to children under 3 years of age.

What does the latest research say about partially hydrolysed guar gum?

Research into PHGG has shown it to be effective in improving stool consistency, reducing IBS symptoms, and supporting a healthy gut microbiome through its prebiotic properties. Studies have also found it to be well-tolerated with fewer side effects than some other fibre supplements. It is considered a clinically supported option for dietary fibre supplementation in adults and children.

How Should You Use OptiFibre Tin?

OptiFibre Tin is designed to be as simple as possible to incorporate into your daily routine. Because the powder is tasteless and odourless, it can be mixed into almost any food or drink without affecting flavour. Always use the scoop provided inside the tin to measure your dose accurately.

If you are new to fibre supplements, begin with half a scoop or one scoop per day and increase gradually over one to two weeks. This allows your digestive system to adjust and reduces the risk of bloating or wind.

What Is the Correct Dose of OptiFibre Tin?

The dose of OptiFibre varies depending on your age and the reason you are taking it. Always follow the directions on the product label or as advised by your pharmacist or GP. Do not exceed the maximum recommended daily dose.

When Is the Best Time to Use OptiFibre Tin?

OptiFibre can be taken at any time of day — there is no strict requirement to take it at a specific hour. Most people find it easiest to take with a meal, such as stirred into breakfast porridge or a morning drink, as this helps build a consistent habit. If you are taking other oral medicines, make sure to separate your OptiFibre dose by at least one hour to avoid any potential effect on medicine absorption.

Consistency is the most important factor. Taking OptiFibre at the same time each day helps your digestive system respond more predictably and makes it easier to remember your dose.

How Long Can You Use OptiFibre Tin For?

OptiFibre can be used as part of a long-term daily routine to maintain adequate fibre intake and support digestive regularity. Unlike stimulant laxatives, it does not cause dependency and is generally safe for ongoing use. However, if your symptoms do not improve within two weeks of starting OptiFibre, or if they worsen at any point, you should speak to your GP or pharmacist to rule out an underlying cause.

It is good practice to review your use of any supplement periodically with a healthcare professional, particularly if your health circumstances change.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of OptiFibre Tin?

Most people tolerate OptiFibre well, particularly once their digestive system has had a chance to adjust. The most commonly reported side effects are related to the increased fibre load in the gut and tend to be mild and temporary.

  • Bloating
  • Flatulence (wind)
  • Mild abdominal discomfort or cramping
  • Loose stools (if the dose is too high initially)

These effects are most likely to occur in the first few days of use. Starting with a lower dose and increasing gradually — alongside drinking plenty of water — significantly reduces the likelihood of experiencing them.

What Are the Less Common Side Effects of OptiFibre Tin?

Less commonly, some people may experience the following side effects, particularly if OptiFibre is not taken with sufficient fluid or if the dose is increased too quickly.

  • Nausea
  • Difficulty swallowing (if the powder is not fully dissolved before consumption)
  • Worsening constipation (if fluid intake is inadequate)
  • Mild allergic skin reactions such as rash or itching — rare

If you notice any of these symptoms and they do not resolve, reduce your dose and speak to your pharmacist before continuing.

What Are the Serious Side Effects of OptiFibre Tin?

Serious side effects from OptiFibre are rare but can occur. A severe allergic reaction (anaphylaxis) to guar gum is uncommon but has been reported. Symptoms of a serious allergic reaction include swelling of the face, lips, tongue, or throat, difficulty breathing, a sudden drop in blood pressure, or a widespread skin rash. If you experience any of these symptoms, stop using OptiFibre immediately and call 999 or go to your nearest A&E department without delay.

Choking or oesophageal obstruction can occur if the powder is swallowed dry or without adequate fluid. Always dissolve OptiFibre fully in liquid before consuming and never take it dry.

What Should You Do If You Experience Side Effects of OptiFibre?

For mild side effects such as bloating or wind, try reducing your dose temporarily and increasing your fluid intake. Gradually reintroduce the full dose over one to two weeks. If side effects are persistent, uncomfortable, or unexpected, stop using the product and seek advice from your pharmacist or GP. You can also report suspected side effects to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can OptiFibre Interact With Other Medicines?

Partially hydrolysed guar gum may slow the rate at which some oral medicines are absorbed in the gut. This is not usually clinically significant, but as a precaution you should take OptiFibre at least one hour before or after any other oral medication. People taking medicines for diabetes should monitor their blood glucose more closely when starting OptiFibre, as increased fibre intake can affect glucose absorption. Always inform your pharmacist of all medicines, supplements, and herbal products you are taking before starting OptiFibre.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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