Prednisolone
oral corticosteroid · anti-inflammatory
Third-party optionBy the Layer Nutrition editorial team · How the atlas classifies the 664 molecules
What this medicine is for
Pharmacologically, Prednisolone relates to the category “oral corticosteroid (anti-inflammatory)”. Corticosteroids reduce inflammation and moderate immune reactions.
For Prednisolone, in practice: Reduces inflammation and modulates immunity. How it is used depends on the situation, within the framework set by the doctor.
Under which brands it is found
Prednisolone is found in around 14 presentations listed in France. It is available under various brand names and as generics.
- Prednisolone Arrow
- Prednisolone Biogaran
- Prednisolone Cristers
- Prednisolone Eg
- Prednisolone Evolugen
- Prednisolone Sandoz
- Prednisolone Teva
- Prednisolone Viatris
- Prednisolone Zentiva
- and other presentations
Original brand-name products and generics deliver the same active substance; the choice between them is made with your doctor or pharmacist.
On the plate: calcium, potassium and protein
On prednisolone, the body loses more calcium in the urine and breaks down its protein faster. Food helps protect the bones and preserve muscle mass, alongside your treatment.
Calcium comes first from dairy products: yoghurt and cheese are rich in it, as are sardines eaten with their bones and almonds. Leafy green vegetables, broccoli, kale and spinach also provide a useful share. Spreading these sources across the day supports the bone reserve that the corticosteroid puts under strain.
The treatment makes the body retain salt and lose potassium: vegetables and fruit are full of it, sweet potato, spinach, legumes, dried apricot and banana. To slow the breakdown of protein, keep a quality source at every meal, eggs, fish, lean meat or legumes. Easing off table salt at the same time limits water retention.
How prednisolone works
Prednisolone is the active glucocorticoid of this family. Prednisone, by contrast, is a prodrug: the liver converts it into prednisolone before it can act. Once active, the molecule curbs inflammation by inhibiting phospholipase A2, the enzyme that releases arachidonic acid from cell membranes. Deprived of this starting point, the cascade that produces inflammatory mediators slows down.
The action does not stop there. After entering the cell, prednisolone reaches the nucleus and binds to the glucocorticoid receptor. This complex alters the expression of many genes and reduces the production of pro-inflammatory cytokines. It also lowers lymphocyte activity, which modulates the body's immune response.
Why prednisolone is prescribed
Prednisolone belongs to the synthetic analogues of the adrenal hormones. It is used mainly for its powerful anti-inflammatory effect, valuable in conditions that affect many organ systems. Its indications cover endocrine, rheumatological, allergic, dermatological, respiratory, haematological and digestive situations.
This breadth of use rests on its ability to modify the immune response to a range of stimuli. By lowering lymphocyte activity and cytokine production, it calms diseases in which the immune system overreacts or sustains inflammation. A single molecule can therefore serve an allergic flare, a rheumatic disease or a blood disorder equally well.
How to take it day to day
Prednisolone is best taken once a day, in the morning, at breakfast. This timing limits stomach irritation and reduces the sleep disturbance that a corticosteroid can cause. Its plasma half-life is around three hours in adults, a little less in children, and the peak concentration occurs one to three hours after the dose. The biological effect nonetheless lasts several hours, which sometimes allows an alternate-day schedule.
Stopping calls for caution. Abruptly stopping prednisolone can be dangerous, especially after a high dose taken for a long time: the treated condition may flare again and withdrawal signs may appear, intense fatigue, weakness, aching muscles, joint pain. The dose is reduced gradually, in steps, always on medical advice. You should therefore not change your treatment on your own initiative.
The effects to know about
Some effects are common and affect more than one person in a hundred: weight gain, indigestion, difficulty falling asleep, restlessness, heavy sweating and slight mood changes. Weight gain has two mechanisms, increased appetite and water retention. These effects often accompany the start of treatment or high doses.
Other effects depend on duration. Prolonged use can thin the bones and lead to osteoporosis, raise the risk of infection and increase blood sugar; this risk grows with the dose and the duration. The treatment also disturbs salt balance: sodium and water retention, potassium loss, hypokalaemic alkalosis and high blood pressure are among the reported disorders.
Why calcium and protein come into play
Prednisolone leaves two clear marks on nutrition. All corticosteroids increase the urinary excretion of calcium, which gradually depletes the bone reserve. In parallel, the molecule induces a negative nitrogen balance by speeding up protein catabolism: the body breaks down its protein faster than it rebuilds it.
These effects guide the nutritional benchmarks of the treatment. Restricting dietary salt and adding extra potassium are sometimes needed to contain water retention and potassium loss. In people on glucocorticoids, supplementation combining calcium and vitamin D is recommended: it does better than no supplement or than calcium alone, and counters the treatment's negative calcium balance.
Interactions to watch for
Several combinations deserve attention. With non-steroidal anti-inflammatory drugs and aspirin, prednisolone raises the risk of ulcer and digestive bleeding. Diuretics and amphotericin increase potassium loss; and hypokalaemia raises the toxicity of cardiac glycosides such as digoxin. Because the corticosteroid raises blood sugar, antidiabetic drugs and insulin sometimes require a dose adjustment.
The molecule's metabolism also comes into play. Enzyme inducers, rifampicin, phenytoin, carbamazepine and barbiturates, reduce its effect, while inhibitors such as ketoconazole and ritonavir increase its exposure in the body. Finally, live vaccines are contraindicated during treatment and are postponed to at least three months after it ends.
Monitoring the treatment
Monitoring watches the parameters sensitive to the treatment. Blood sugar, blood pressure and electrolytes are checked, echoing the rise in blood sugar and salt retention. Attention is kept for signs of infection, easier to mask when immunity is modulated, and for the function of the hypothalamic-pituitary-adrenal axis.
With chronic use, monitoring expands. Bone mineral density is measured to detect bone thinning early, with an annual bone densitometry advised. An annual eye examination is also recommended. This regular follow-up allows the dose to be adjusted and the effects of the treatment to be anticipated.
Sources
Related molecules
To explore in the « Pain and inflammation » family and its neighbours.
See the whole « Pain and inflammation » family · Back to the atlas
Supplements to consider
Beyond the plate, a single isolated nutrient can be worth discussing, to confirm with your doctor or pharmacist. Here is which one and in which form.
Calcium
Calcium is the most abundant mineral in the body, involved in bone health. Calcium citrate is well absorbed, including away from meals, whereas carbonate requires an acidic environment for its absorption.
Preferred form calcium citrate (does not depend on gastric acidity)
Vitamin D3 (cholecalciferol)
Vitamin D is a fat-soluble vitamin. The D3 form (cholecalciferol) is the one adopted by most guidelines. It is better absorbed when taken during a meal that contains fats.
Preferred form D3 (cholecalciferol), during a fatty meal
Frequently asked questions
What are the main side effects of prednisolone?
The package leaflet notes in particular stomach irritation, water and salt retention, raised blood sugar and, with long-term treatment, an effect on bone. Effects vary with how long you take it and with each person's situation. For the full list and what applies to you, refer to the leaflet in your box and talk to your doctor or pharmacist.
When and how should you take prednisolone?
This oral corticosteroid is usually taken as a single dose in the morning, with a meal to be gentler on the stomach. The timing, the form and the duration are set by your doctor. Follow the leaflet and their prescription, and do not adjust the schedule yourself.
Can you stop prednisolone suddenly, and what should you do if you miss a dose?
The leaflet stresses that a long-term course should not be stopped suddenly without medical advice, as the dose is lowered gradually. If you miss a dose, it says to carry on as normal without doubling the next one. For your specific case, ask your doctor or pharmacist for advice.
Prednisolone and pregnancy or breastfeeding: what precautions apply?
The leaflet states that this medicine should be used during pregnancy only if necessary, and that finding out you are pregnant while on treatment should lead you to seek medical advice. Only your doctor can decide what to do for pregnancy as well as for breastfeeding. Refer to the leaflet and to their advice.
Does prednisolone interact with other medications?
Interactions are described, in particular with non-steroidal anti-inflammatory drugs such as aspirin or ibuprofen, because of the risk to the digestive tract. Tell your doctor about any other treatment, including over-the-counter ones. The full list is in the leaflet, and your pharmacist can check your combinations.
Should calcium and vitamin D be monitored during long-term steroid treatment?
During long-term steroid treatment, the French guidelines on glucocorticoid-induced osteoporosis (GRIO and the French Society of Rheumatology) recommend assessing and correcting any calcium and vitamin D deficiencies rather than supplementing across the board, with a 25-OH vitamin D test possibly offered. On the nutrition side, the active ingredient to consider is vitamin D in the form of cholecalciferol (D3), calcium coming first from food or, if needed, in the form of citrate or carbonate. This monitoring and any decision to supplement are for your doctor to make.
Ces réponses portent sur le volet nutritionnel. Pour toute question sur votre médicament, la notice et votre médecin ou pharmacien font foi.