Cystopurin 3g granules 6 sachets

What Are Cystitis Sachets and How Can Cystopurin Help?

If you've ever had cystitis, you'll know just how uncomfortable it can be. That urgent, frequent need to urinate — combined with a burning or stinging sensation — can make even a normal day feel unbearable. Cystitis sachets like Cystopurin 3g granules offer a simple, over-the-counter way to ease those symptoms quickly, without needing a prescription. Each pack contains six sachets of potassium citrate granules, designed to be dissolved in water and taken orally to relieve the discomfort of mild, uncomplicated cystitis in adults. You can browse our full range of cystitis and bladder infection treatments if you'd like to compare your options.

Cystitis is one of the most common urinary tract infections (UTIs) in the UK, particularly affecting women. According to the NHS, around half of all women will experience at least one UTI in their lifetime. Cystopurin is a well-established, trusted brand that has been used for decades to provide symptomatic relief while the body works through a mild infection.

How Does Cystopurin Work to Relieve Cystitis Symptoms?

The active ingredient in Cystopurin is potassium citrate (3g per sachet). It works by alkalising the urine — in other words, it raises the pH of your urine, making it less acidic. Bacteria that cause cystitis thrive in an acidic environment, and acidic urine is also what causes that characteristic burning sensation when you urinate. By reducing acidity, Cystopurin helps to soothe the lining of the bladder and urethra, making urination less painful.

• Potassium citrate is absorbed into the bloodstream after ingestion
• It is metabolised and excreted by the kidneys into the urine
• This raises urinary pH, reducing acidity
• The less acidic urine causes less irritation to the inflamed urinary tract lining

It's worth noting that Cystopurin does not kill bacteria — it is not an antibiotic. It treats the symptoms of cystitis rather than the underlying infection. If your symptoms do not improve within 48 hours, you should seek medical advice, as you may need antibiotic treatment.

Who Is Cystopurin 3g Granules Suitable For?

Cystopurin is intended for adults and young people aged 16 and over who are experiencing the early symptoms of mild, uncomplicated cystitis. It is most commonly used by women, though men can also develop cystitis. That said, cystitis in men is less common and may indicate an underlying condition, so men should always consult a GP before self-treating.

Cystopurin may be suitable for you if:

• You are aged 16 or over
• You have mild burning or stinging when urinating
• You have a frequent urge to urinate with little output
• You have no fever, back pain, or blood in your urine (which would suggest a more serious infection)

It is not suitable for children under 16, pregnant women (without medical advice), or people with kidney disease, heart failure, or high potassium levels in the blood.

How Does Cystopurin Compare to Other Cystitis Sachets?

How Should Cystopurin Be Stored and Is It Right for You?

Store Cystopurin below 25°C in a dry place, away from direct sunlight and out of the reach of children. Do not use the sachets after the expiry date printed on the packaging. Each sachet should be used immediately once dissolved — do not prepare a drink in advance and store it for later use.

If you are managing other health conditions alongside a urinary infection — for example, if you also need support with women's health products — it's always worth speaking to your pharmacist to make sure everything is compatible. As a cystitis sachet, Cystopurin is a convenient, well-tolerated option for most healthy adults, but individual circumstances vary. Always read the label carefully before use.

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.

What Is Cystopurin 3g Granules and What Is It Used For?

Cystopurin 3g granules are an over-the-counter urinary alkalinising treatment used to relieve the symptoms of mild, uncomplicated cystitis in adults aged 16 and over. The active ingredient, potassium citrate, works by reducing the acidity of urine, which in turn soothes the burning, stinging, and discomfort that cystitis causes. Each sachet contains 3g of potassium citrate in granule form, which you dissolve in a glass of water before drinking. The pack contains six sachets — enough for a full two-day course of treatment.

Cystitis is a lower urinary tract infection (UTI) that causes inflammation of the bladder. It is particularly common in women, though it can affect anyone. Symptoms typically include a burning sensation when urinating, a frequent and urgent need to pass urine, and cloudy or strong-smelling urine. Cystopurin does not treat the bacterial infection itself — it relieves symptoms only. If you also experience fever, back or loin pain, or blood in your urine, these may indicate a kidney infection and you should seek urgent medical attention.

What Do You Need to Know Before Using Cystopurin 3g Granules?

Before using Cystopurin, check the following contraindications and warnings carefully:

• Do not use if you are under 16 years of age
• Do not use if you have kidney disease or impaired kidney function
• Do not use if you have heart failure or severe heart disease
• Do not use if you have high levels of potassium in your blood (hyperkalaemia)
• Do not use if you are pregnant or breastfeeding without first speaking to your GP or midwife
• Do not use for more than 48 hours without seeking medical advice
• Do not use if you have symptoms suggesting a kidney infection (fever, back pain, vomiting)

The following medicines may interact with Cystopurin. Tell your pharmacist or GP if you are taking any of these:

• Potassium-sparing diuretics (e.g. spironolactone, amiloride)
• ACE inhibitors (e.g. ramipril, lisinopril)
• Potassium supplements or potassium-containing salt substitutes
• Lithium (urinary alkalinisation can affect lithium excretion)

How Should You Use Cystopurin 3g Granules?

Always use Cystopurin exactly as described in the patient information leaflet. Do not exceed the stated dose. Here is how to take it correctly:

1. Open one sachet of Cystopurin granules
2. Pour the granules into a full glass of water (approximately 200ml)
3. Stir well until the granules are completely dissolved
4. Drink the solution immediately — do not store it
5. Repeat three times daily, spacing doses evenly throughout the day
6. Continue for a maximum of two days (48 hours)
7. Drink plenty of additional water throughout the day to help flush the urinary tract

If your symptoms have not improved after 48 hours, stop using Cystopurin and consult your GP. You may need antibiotic treatment. For additional support with related conditions, you might also find our pain relief range helpful for managing discomfort alongside your cystitis treatment.

What Are the Possible Side Effects of Cystopurin 3g Granules?

Like all medicines, Cystopurin can cause side effects, although not everyone experiences them. Most people tolerate it well when taken as directed.

Common side effects:

• Mild nausea
• Stomach discomfort or bloating
• Diarrhoea

Less common side effects:

• Vomiting
• Elevated potassium levels in the blood (hyperkalaemia) — particularly in those with kidney problems
• Weakness or muscle cramps (signs of electrolyte imbalance)

If you experience any signs of a serious allergic reaction — such as swelling of the face, lips, or throat, difficulty breathing, or a severe rash — stop taking Cystopurin immediately and seek emergency medical help. Serious reactions are rare but require prompt attention.

How Should You Store Cystopurin 3g Granules?

Proper storage helps maintain the quality and safety of the product. Follow these guidelines:

• Store below 25°C in a cool, dry place
• Keep away from direct sunlight and moisture
• Keep out of the sight and reach of children
• Do not use after the expiry date printed on the outer carton
• Do not store a prepared drink — use immediately after dissolving
• Do not dispose of medicines via wastewater or household waste — return unused sachets to your pharmacy

If you are looking after your general health alongside treating cystitis, our vitamins and supplements range includes products that may support immune and urinary health. Always speak to your pharmacist before combining any supplements with medicines.