Uridine – effects, properties and uses - Blog

In 1869, a Swiss scientist discovered a substance which he named "nuclein", thereby initiating research into the structure of genetic material. Over the following decades, the composition of nucleic acids was elucidated and the compounds involved in their formation were identified, including uridine. Today, it is known that uridine occurs naturally in the human body and plays a role in many cellular processes. It is also present in food and certain dietary supplements.

uridine

Table of Contents:

What is uridine and what functions does it perform in the body?
Uridine and the nervous system
Natural sources of uridine – which foods contain it?
FAQ – uridine: effects, properties and uses

What is uridine and what functions does it perform in the body?

Uridine is a natural chemical compound belonging to the group of nucleosides. It consists of two components: uracil (a nitrogenous base) and ribose (a simple sugar). In the body, it can be converted into other substances required for various cellular processes. One of these is uridine monophosphate (UMP), which additionally contains a phosphate group.

One of uridine’s most important roles is its involvement in the formation of ribonucleic acid (RNA). This is a molecule found in all living cells, which plays a part, amongst other things, in protein synthesis. RNA is formed on the basis of information encoded in deoxyribonucleic acid (DNA). Uridine is one of the fundamental building blocks of DNA.

Compounds derived from uridine also play a role in carbohydrate metabolism. One of its derivatives is required for the formation of glycogen, which is a stored form of glucose found primarily in the muscles and liver. Other uridine derivatives are involved in the production of cell membrane components and in the binding of sugars to proteins and fats. These are processes that occur naturally in many tissues of the body.

Uridine and the nervous system

It is worth taking a separate look at the role of uridine in the nervous system. This compound is found in the cells of the nervous system, including neurons, which are responsible for receiving and transmitting information. As in other tissues, it plays a part in the metabolic processes involved in the synthesis of RNA and cellular components.

Cell membranes are an important structural component of neurons. They separate the interior of the cell from its surroundings and are also found in its numerous extensions. These membranes consist mainly of fats and proteins. Among the most important fats present in them are phospholipids, including phosphatidylcholine. Various substances are involved in the production of phospholipids, including, amongst others, uridine derivatives.

Nerve cells also contain other compounds derived from uridine, which are involved in the transmission of signals between cells. Some of these signals are received by specialised proteins on the cell surface, known as receptors. These react to the presence of specific substances in the cell’s environment.

Estimated content of uridine and its derivatives in selected food products and dietary supplements

Product	Urydine or UMP content
Dietary supplements	50–300 mg per serving
Formula milk	Up to 1.75 mg UMP per 100 kcal
Honey	1.8–5.1 mg per 100 g

Natural sources of uridine – which foods contain it?

meat, fish

Uridine is found in products of plant and animal origin. It may be present there as a standalone compound, but a significant proportion is found within larger molecules, primarily in ribonucleic acid (RNA). As RNA is a component of cells, compounds containing uridine are naturally present in many types of food.

Products containing nucleic acids include meat, fish, offal, pulses, mushrooms, as well as yeast and honey. Their content depends, amongst other things, on the type of product and its composition. For example, offal and yeast may contain relatively large amounts of nucleic acids; however, this does not mean that they are equally rich in free uridine itself. Uridine and its derivatives are also found in breast milk. Various nucleotide compounds are present there, the levels of which vary, amongst other factors, throughout the lactation period. Selected nucleotides may also be ingredients in infant formulae.

In dietary supplements, uridine is most commonly found in the form of uridine monophosphate (UMP), either on its own or in combination with B vitamins, choline or omega-3 fatty acids. Dosages depend on the specific product and often range from 50 to 300 mg per day; however, no official recommended daily intake of uridine has been established for adults.

"Uridine plays an important role in the body’s functioning, particularly in processes related to RNA synthesis, phospholipid production and the structure of cell membranes. Its role in the metabolic processes occurring in neurons makes it an interesting ingredient in supplements that support proper nutrition and a subject of research into the health of the nervous system". Łukasz Domeracki – Dietitian

FAQ – uridine: effects, properties and uses

What is uridine and what are its properties?

Uridine is a natural nucleoside composed of uracil and ribose. In the body, it is involved in the metabolic processes leading to the formation of nucleotides, which are the building blocks of RNA. Its derivatives are also involved in processes related to phospholipid synthesis and carbohydrate metabolism.

What role does uridine play in the nervous system?

Uridine is also found in the cells of the nervous system. Its derivatives are involved in processes related to the formation of RNA and cell membrane components, including the phospholipids present in neurons. These are natural biological processes that are the subject of scientific research.

How does uridine differ from uridine monophosphate (UMP)?

Uridine is a nucleoside consisting of uracil and ribose. Uridine monophosphate, abbreviated to UMP, contains an additional phosphate group and belongs to the class of nucleotides. UMP is one of the forms used in dietary supplements.

How does uridine differ from uridine monophosphate (UMP)?

Which ingredients is uridine combined with in supplements?

Uridine monophosphate can be found in both single-ingredient and multi-ingredient preparations. It is combined, amongst other things, with vitamins B6 and B12, choline and omega-3 fatty acids. Vitamins B6 and B12 contribute to the normal functioning of the nervous system, which is in line with authorised EU health claims, provided that the requirements regarding their content in the product are met.

In which foods is uridine found?

Uridine and compounds containing its structure occur naturally in many foods. Sources include meat, fish, offal, pulses, mushrooms and yeast. Uridine is also present in the human body, which utilises it in daily metabolic processes.

How much uridine do dietary supplements contain?

The UMP content depends on the specific product. Available products may contain doses ranging from several dozen to several hundred milligrams of this ingredient. No official reference intake value for uridine has been established for adults; therefore, the amounts stated on the packaging do not correspond to a recommended daily intake.

What should you look out for when choosing a uridine supplement?

It is worth checking the form of the ingredient, the UMP content in the recommended daily dose, and the presence of other substances, such as B vitamins. A clear label, correct product labelling and usage recommendations are also important. Dietary supplements are intended to complement your daily diet and are not a substitute for a varied diet.

Sources:

Song, C., Liu, Z. J., Xu, B., Zou, R., & Hu, W. (2025). The Role of Uridine in Health and Disease. Journal of inflammation research, 18, 10163–10179. https://doi.org/10.2147/JIR.S506308
Kuś P. M. (2020). Honey as Source of Nitrogen Compounds: Aromatic Amino Acids, Free Nucleosides and Their Derivatives. Molecules (Basel, Switzerland), 25(4), 847. https://doi.org/10.3390/molecules25040847
Hodgkinson, A., Wall, C., Wang, W., Szeto, I. M., Ye, W., & Day, L. (2022). Nucleotides: an updated review of their concentration in breast milk. Nutrition research (New York, N.Y.), 99, 13–24. https://doi.org/10.1016/j.nutres.2021.09.004