Side effects of prednisolone tablets and liquid

The higher the dose of prednisolone that you take and the longer you take it for, the greater the chance of side effects. You're less likely to get side effects if you take a relatively low dose of prednisolone daily.

If you have been taking prednisolone for more than a few weeks, check with your doctor before stopping it suddenly to reduce your chances of withdrawal side effects.

Some side effects, such as stomach upset or mood changes, can happen straight away. Others, such as getting a rounder face, happen after weeks or months.

Common side effects

These common side effects of prednisolone happen in more than 1 in 100 people. There are things you can do to help cope with them:

Speak to a doctor or pharmacist if the advice on how to cope does not help and any of these side effects bother you or last more than a few days.

Serious side effects

You are more likely to have a serious side effect if you take a higher dose of prednisolone or if you have been taking it for more than a few weeks.

Call a doctor or call 111 straight away if you get:

• a high temperature, chills, a very sore throat, ear or sinus pain, a cough, more saliva or a change in colour of saliva (yellowish and possibly with streaks of blood), pain when you pee, mouth sores or a wound that will not heal – these can be signs of an infection
• sleepy or confused, feeling very thirsty or hungry, peeing more often, flushing, breathing quickly or breath that smells like fruit – these can be signs of high blood sugar
• weight gain in your upper back or belly, "moon face" (a puffy, rounded face), very bad headaches and slow wound healing – these can be signs of Cushing's syndrome
• a very upset stomach or you're being sick (vomiting), very bad dizziness or passing out, muscle weakness, feeling very tired, mood changes, loss of appetite and weight loss – these can be signs of adrenal gland problems
• muscle pain or weakness, muscle cramps, or changes in your heart rate – these can be signs of low potassium levels
• severe stomach pain, severe back pain, severe upset stomach or you're being sick – these can be signs of pancreas problems
• breathlessness
• swelling in your arms or legs
• changes in your eyesight
• any bruising or bleeding that is not normal
• red or black poo

Call 999 or go to A&E if:

Mood changes

You may notice mood changes and mental health problems while taking prednisolone.

Talk to your doctor or contact 111 if you have any mood changes including:

• feeling depressed
• feeling high, or moods that go up and down
• feeling anxious, having problems sleeping, difficulty in thinking, or being confused and losing your memory
• feeling, seeing or hearing things that do not exist (hallucinations)
• having strange and frightening thoughts, changing how you act, or having feelings of being alone

The higher the dose, the more intense the mood changes can be.

Go to 111.nhs.uk or call 111.

Call 999 or go to A&E if:

Serious allergic reaction

In rare cases, it's possible to have a serious allergic reaction (anaphylaxis) to prednisolone.

Long-term side effects

Taking prednisolone for a long time can lead to side effects such as:

• thinner bones (osteoporosis)
• poorly controlled diabetes
• eyesight problems
• high blood pressure (hypertension)

Children and teenagers

Taking prednisolone at higher doses for a long time can slow down the normal growth of children and teenagers.

Your child's doctor will monitor their height and weight carefully for as long as they're taking this medicine. This will help them spot any slowing down of your child's growth and change their treatment if needed.

Even if your child's growth slows down, it does not seem to have much effect on their eventual adult height.

Talk to your doctor if you're worried. They'll be able to explain the benefits and risks of giving your child prednisolone.

Other side effects

These are not all the side effects of prednisolone. For a full list, see the leaflet inside your medicine packet.