Last updated: August 2026

Bloated, puffy and uncomfortable? Water retention is extremely common and usually nothing to worry about – but finding the right remedy can feel overwhelming. This guide cuts through the noise: here’s what water retention tablets are, how natural and prescription options compare, and how to choose the right one for you.

Water retention occurs when excess fluid builds up in the body, causing swelling in the hands, feet, ankles, legs and tummy. Common causes include sitting for long periods, a high-salt diet and hormonal changes before menstruation. If your symptoms are severe or come on suddenly, always see your GP to rule out anything more serious.

What are the best water retention tablets?

For mild, everyday water retention, natural herbal tablets containing dandelion, uva-ursi and buchu leaf are generally the most appropriate option – gentler than prescription diuretics and without the risk of side effects like low potassium or dizziness. Prescription diuretics are reserved for medically diagnosed conditions. HRI Water Balance is the only THR-registered natural water retention tablet approved by the MHRA in the UK.

What are water retention tablets?

Water retention tablets, also known as diuretics, are the medicines used to alleviate fluid retention – you may also see them referred to as ‘water tablets’.

They work by increasing the amount of urine you produce, which allows your body to naturally get rid of excess water and salts.

Prescription water retention tablets

There are several diuretics doctors can prescribe for specific types of severe water retention, which will probably be thiazide and thiazide-related drugs, loop diuretics and potassium-sparing diuretics.

Some patients complain of unpleasant side effects when taking these sorts of prescription diuretics, including dizziness, fatigue, headaches, nausea and low blood pressure.

Prescription diuretics can also cause your body to expel too much potassium or sodium which can lead to muscle weakness and painful cramps.

Natural water retention tablets

There are also some water retention tablets you can buy over the counter. These are called natural diuretics and contain herbs, dietary supplements and ingredients with natural diuretic properties.

For mild water retention, these are likely to be preferable, as they don’t come with the risk of the uncomfortable side effects linked with prescription diuretics.

What are the strongest natural water retention tablets?

Among herbal options, the strongest formulas are those that combine multiple diuretic herbs rather than relying on a single ingredient. HRI Water Balance combines dandelion root and leaf, uva-ursi and buchu leaf – three herbs with established traditional use as diuretics – making it one of the most comprehensive natural formulas available in the UK.

HRI Water Balance™

HRI Water Balance™ are the only natural tablets for water retention that are approved by the UK Medicines and Healthcare Products Regulatory Agency.

Formulated with a unique combination of active extracts of dandelion root and leaf, uva ursi and buchu leaf, two easy-to-swallow tablets a day can keep water retention symptoms at bay.

HRI Water Balance™ works by expelling excess fluid from the body, safely and naturally.

Dandelion root and leaf combine to offer a gentle but effective herbal diuretic, whilst buchu leaf has been chosen for its combination of diuretic and antioxidant properties. Uva-ursi completes the triad of potent natural ingredients and helps to maintain the health of the bladder and urinary tract.

Are there side effects from natural water retention tablets?

Natural water retention tablets such as HRI Water Balance are generally very well tolerated. Unlike prescription diuretics, which can cause low blood pressure, dizziness, low potassium and muscle cramps, THR-registered herbal tablets work more gently with the body’s natural processes. As with any supplement, always read the patient information leaflet before use, and speak to your GP if you are pregnant, breastfeeding, taking other medication, or have an underlying health condition.

Is there an alternative to HRI Water Balance?

HRI Water Balance is the only water retention tablet registered as a Traditional Herbal Remedy (THR) with the MHRA in the UK, meaning it meets strict standards for quality, safety and manufacturing. Other products are available, but they may not carry the same level of regulatory approval. When choosing any water retention supplement, look for the THR logo on the packaging as a mark of quality assurance.

More natural ways to treat water retention

There are other natural ways to relieve water retention. These include massage and exercises that use movement to promote lymphatic drainage, helping your body get rid of excess water, toxins and metabolic waste.

Although it sounds counter-intuitive, water retention can actually be triggered by mild dehydration, so it’s a good idea to increase your fluid intake. Simply drinking more water can help to flush toxins and stimulate the body to release some of the fluid it is retaining.

Having a diet high in salt will also contribute to water retention. This is because salt contains sodium which can cause our bodies to conserve water. Reducing the amount of salt in your diet can be another solution to fluid retention.

There are a wealth of useful articles and tips on our website designed to help you manage water retention naturally without prescription drugs.

So don’t put up with swollen ankles or fingers any longer. Have a chat with your GP to make sure it’s not a sign of anything serious, and then try these natural ways to relieve water retention and feel more comfortable.