How many electrolytes per day do you need (and can you drink electrolytes every day?)

How many electrolytes do you need per day? Learn what ‘per day’ means, whether your body can make them, and whether drinking them daily makes sense.

This article was reviewed by Dr Mark Atkinson M.B.B.S., FRSPH for medical and scientific accuracy before publication.

The question of how many electrolytes you need per day seems simple, but it isn't. There is no general recommended amount for 'electrolytes' as a group. Context also plays a significant role.

In this article, we look at how much of each electrolyte the average person needs, when that need can change, and whether you can use electrolytes every day.

How many per day? | Where do they come from? | Can you drink them daily? | Electrolyte deficiency

Key takeaways

There is no single total recommendation for 'electrolytes' as a group.
Requirements are typically assessed per individual mineral.
For most healthy people, a varied diet provides sufficient electrolytes.
Increased need can arise from sweating, heat, intensive exercise, illness with fluid loss, and certain dietary patterns such as a low-carbohydrate diet or fasting.

Want to understand what electrolytes are and how they work? Read What are electrolytes and what do they do in the body? first.

How many electrolytes per day?

How many electrolytes per day is not an easy question to answer. First of all, the reference values differ between authority. In this article, we focus on the European values. Secondly, reference values talk about averages, and averages not always apply.

Reference intake for electrolytes by EFSA

For many minerals, EFSA (European Food Safety Authority) provides dietary reference values (DRVs) for adults (5-10). These include values such as PRI (Population Reference Intake), AR (Average Requirement), and AI (Adequate Intake).

EFSA defines these as follows:

PRI is "the intake of a nutrient that is likely to meet the needs of almost all healthy people in a population." (2)
AR is "the level of a nutrient in the diet that meets the daily needs of half the people in a typical healthy population." (3)
AI is "a dietary recommendation used when there isn't enough data to calculate an Average Requirement. It is the average nutrient level consumed daily by a typical healthy population which is assumed to be adequate for the population's needs." (4)

The EFSA does not provide a DRV for all minerals. In specific opinions it then uses the term safe and adequate intake. This describes an intake that the Panel considers safe and adequate for the general population (6-7).

Reference intake for electrolytes by EU law

Apart from the EFSA, there is a statutory European reference intake (RI) for labelling purposes, as laid down in Regulation (EU) No 1169/2011 (5).

Overview of the European reference intake for electrolytes by the authority

Mineral	Legal RI (EU 1169/2011)	EFSA value type	EFSA value for adults
Sodium	no RI established	safe and adequate intake	2,000 mg/day
Chloride	800 mg/day	safe and adequate intake	3,100 mg/day
Potassium	2,000 mg/day	AI	3,500 mg/day
Magnesium	375 mg/day	AI	350 mg/day (men) / 300 mg/day (women)
Calcium	800 mg/day	PRI	950 mg/day
Phosphorus	700 mg/day	AI	550 mg/day

(5-11)

Why advice on how many electrolytes per day vary even more

The table above provides a general overview of daily needs per authority. However, the exact requirements can vary depending on factors such as diet, climate, physical activity, fluid loss or medical conditions.

It is therefore useful to distinguish between:

Baseline intake → disruption of balance → medical correction

Together, these three situations form a simple model.

1. Baseline intake through food

Reference values describe how much of certain minerals the average person needs through their diet to support normal bodily functions.

These guidelines cover:

Baseline intake through food
Average needs of healthy individuals
Dietary advice for the general population

They do not describe how many electrolytes someone should take, and they do not account for temporary electrolyte losses.

2. Loss or reduced supply

Electrolytes can become unbalanced when the body loses more fluid and minerals, or when intake is temporarily lower.

This can happen, for example, during:

Intensive sport
Prolonged sweating
Hot conditions
Illness with fluid loss (such as diarrhoea or vomiting)
Certain dietary patterns
Fasting or water fasting

This is not about establishing a new daily baseline, but about restoring a temporary disruption to balance.

3. Medical correction

In medical situations — for example, severe dehydration or prolonged fluid loss — electrolytes may be administered in a targeted way. This occurs, for instance, via oral rehydration solutions (ORS) or under medical supervision. (12)

Where do electrolytes come from?

Because the body cannot produce electrolytes on its own, these minerals must be obtained through food.

Food

For most people, electrolytes come from everyday food. A varied diet including vegetables, fruit, dairy, nuts, and salt typically provides sufficient minerals.

We do not go into specific food sources in depth here. Read more in: Where are electrolytes found in food?

Supplements

In addition to food, electrolyte supplements are also available, for example in powders, tablets, or drinks. These often contain combinations of sodium, potassium, and magnesium. In some situations, people choose to supplement their electrolytes — when sweating, during intensive exercise, illness, a low-carbohydrate diet, whole-food diet or fasting, for instance.

For most healthy people, however, supplements are not routinely necessary.

Can you drink electrolytes every day?

Yes, drinking electrolyte supplements every day is generally fine. For most healthy people with a varied diet, it is not necessary, however.

Whether a daily electrolyte drink is worthwhile depends largely on factors such as:

Physical exertion
Sweating
Dietary patterns such as keto or low-carbohydrate
Fasting or water fasting

Can you get an electrolyte deficiency?

We have a full article on this electrolyte deficiency topic.

Conclusion

There is no fixed daily amount of electrolytes, because electrolytes are not a single nutrient but a group of minerals such as sodium, potassium, magnesium, and calcium. The daily requirement is determined per mineral and depends on factors such as diet, fluid balance, sweating, physical activity, and climate.

For most healthy people, a varied diet provides sufficient electrolytes to support normal bodily functions. In situations involving increased fluid loss — such as during intense exercise, heat, or illness — requirements may temporarily increase. Supplementing through food or an electrolyte drink can be beneficial.

You can read more about this in the article on electrolytes in food.

Medical Disclaimer

This article is intended as a general explanation of electrolytes. It is not a substitute for medical advice, diagnosis, or treatment. For questions about your health, symptoms, or possible electrolyte imbalances, it is advisable to consult a doctor or other qualified healthcare professional.

References

1) EFSA Europe – Glossary – Dietary reference value
https://www.efsa.europa.eu/en/glossary/dietary-reference-value

2) EFSA Europe – Glossary – Population reference intake
https://www.efsa.europa.eu/en/glossary/population-reference-intake

3) EFSA Europe – Glossary – Average requirement
https://www.efsa.europa.eu/en/glossary/ar

4) EFSA Europe – Glossary – Adequate intake
https://www.efsa.europa.eu/en/glossary/adequate-intake

5) EUR-lex – Regulation (EU) No 1169/2011 of the European Parliament and of the Council of 25 October 2011
https://eur-lex.europa.eu/eli/reg/2011/1169/oj/eng

6) EFSA Europe – Dietary Reference Values for sodium
https://www.efsa.europa.eu/sites/default/files/consultation/consultation/190403_Draft_opinion_DRV_for_sodium.pdf

7) EFSA Europe – Dietary Reference Values for chloride
https://efsa.onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5779

8) EFSA Europe – Dietary reference values: advice on potassium
https://www.efsa.europa.eu/en/press/news/161025

9) EFSA Europe – Dietary reference values for magnesium
https://efsa.onlinelibrary.wiley.com/doi/10.2903/j.efsa.2015.4186

10) EFSA Europe – Scientific Opinion on Dietary Reference Values for calcium
https://www.efsa.europa.eu/sites/default/files/consultation/150114.pdf

11) EFSA Europe – Scientific Opinion on Dietary Reference Values for phosphorus
https://efsa.onlinelibrary.wiley.com/doi/abs/10.2903/j.efsa.2015.4185

12) NIH – Understanding the use of oral rehydration therapy: A narrative review from clinical practice to main recommendations
https://pmc.ncbi.nlm.nih.gov/articles/PMC9464461/

FAQ's about electrolytes

How many electrolytes do you need per day?

There is no fixed total figure for electrolytes per day. Guidelines are given per mineral, such as sodium, potassium, and magnesium.

Can you use electrolytes every day?

You can, but for most healthy people it is not necessary. Whether it is worthwhile depends on factors such as diet, sweating, climate, and lifestyle.

When do you need more electrolytes?

In situations with increased loss or altered balance, such as sweating, heat, intensive exercise, illness, a low-carbohydrate diet, or fasting.

Can you get too many electrolytes?

Yes. A very high intake of electrolytes can disrupt the body’s balance.

In practice, this varies by mineral. A high sodium intake is relatively common, for example through processed and ultra-processed foods such as deli meats, snacks, sauces, and ready meals.

For other electrolytes, such as potassium or magnesium, excessive intake through normal food is rare. This is more likely to occur with high intake through supplements or concentrated drinks.

About the author

Eduard de Wilde

Eduard de Wilde is the founder of NoordCode and combines years of in-depth knowledge of biohacking, nutrition and healthy ageing with personal experience. He writes about practical, evidence-based strategies to help people feel their best today and age better. In addition, he regularly speaks at conferences and in the media about biohacking, nutrition and healthy ageing.