Prednisone
Prednisone · Say it: PRED-nih-sohn
Prednisone is a corticosteroid tablet prescribed for many conditions, including swelling and inflammation, allergic conditions, autoimmune diseases, and some cancers.
Used for
Hormone problems, such as adrenal insufficiency, congenital adrenal hyperplasia, high calcium linked to cancer, and nonsuppurative thyroiditis
Comes as
1 mg tablets; 2.5 mg tablets
Common side effects
Increased appetite and weight gain, Nausea, vomiting, abdominal pain, or constipation, Acne, rash, increased sweating, or thin or fragile skin
| Generic name | Prednisone |
|---|---|
| Brand names | — |
| Type of medicine | a corticosteroid, a type of steroid medicine that works like the adrenocortical (adrenal gland) steroids the body makes naturally |
| How it is sold | Prescription oral tablet |
| Comes as | 1 mg tablets; 2.5 mg tablets; 5 mg tablets; 10 mg tablets; 20 mg tablets |
| Route | oral |
| Boxed warning | No |
| Label date | 2026-09-08 |
💊 What is Prednisone used for?
- Hormone problems, such as adrenal insufficiency, congenital adrenal hyperplasia, high calcium linked to cancer, and nonsuppurative thyroiditis
- Short-term treatment of rheumatic conditions such as rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, bursitis, and gouty arthritis
- Collagen diseases such as systemic lupus erythematosus and dermatomyositis
- Skin conditions such as pemphigus, severe psoriasis, and severe seborrheic dermatitis
- Severe allergic conditions, including bronchial asthma, allergic rhinitis, and atopic dermatitis
- Serious eye inflammation, such as uveitis, iritis, and optic neuritis
- Lung conditions, such as symptomatic sarcoidosis
- Certain blood disorders, such as idiopathic thrombocytopenic purpura in adults and acquired hemolytic anemia
- Palliative (symptom-relieving) treatment of some leukemias and other cancers
How it works
The label describes prednisone as a glucocorticoid, an adrenocortical steroid. It says corticosteroids suppress the immune system, which is why they are used for inflammation and immune-related conditions. The label does not explain the mechanism in more detail.
How it is usually taken
- The label says it can be taken by mouth. Stomach irritation may be reduced if it is taken before, during, or right after meals, or with food or milk. The label recommends taking it in the morning, before 9 am, because the body's adrenal activity is highest in the early morning. When it is taken more than once a day, the doses are spread evenly through the day. The label says that dietary salt restriction may be advisable for some patients. Antacids between meals may be used when large doses are given, to help prevent peptic ulcers. The label says dosage needs vary and must be set individually, and that the prescriber will adjust the dose over time. Follow the instructions from your prescriber or pharmacist.
Comes as
- 1 mg tablets
- 2.5 mg tablets
- 5 mg tablets
- 10 mg tablets
- 20 mg tablets
⚠️ Prednisone side effects
Common side effects
- Increased appetite and weight gain
- Nausea, vomiting, abdominal pain, or constipation
- Acne, rash, increased sweating, or thin or fragile skin
- Easy bruising
- Trouble sleeping, dizziness, or severe tiredness or weakness
- High blood sugar
- Fluid retention and swelling (edema)
Get medical help right away if
- Get medical help right away if you have signs of an allergic reaction, such as swelling of the face, lips, or throat, or trouble breathing (the label lists anaphylaxis and angioedema).
- Get medical help right away if you have signs of adrenal insufficiency, such as severe tiredness or weakness, dizziness, nausea, or very low blood pressure.
- Get medical help right away if you develop a fever or other signs of infection. The label says corticosteroid-related infections can be severe and at times fatal, and that steroids can mask some signs of infection.
- Get medical help right away if you have severe abdominal pain, or signs of a stomach ulcer, bleeding, or a hole in the intestine. The label lists peptic ulcer with possible perforation and hemorrhage, and perforation of the intestine.
- Get medical help right away if you have symptoms of pancreatitis, such as severe stomach pain.
- Get medical help right away if you have been exposed to chickenpox or measles while taking this medicine. The label says these diseases can be serious or even fatal in people who are not immune, and that medical advice should be sought without delay.
🛑 Who should not take Prednisone, and who should be careful
The label says not to take it if
- You have a systemic fungal infection (the label lists this as a reason not to use prednisone).
- You have a known allergy (hypersensitivity) to any of the ingredients in the tablet.
Tell your doctor before taking it if
- Tell your prescriber about all your medical conditions, including infections, tuberculosis or a positive TB test, hepatitis B, thyroid problems, diabetes, high blood pressure, and any recent heart attack.
- Tell your prescriber if you have had chickenpox or measles, or if you are not sure. The label says particular care should be taken to avoid exposure to these diseases.
- Do not stop taking this medicine without first talking to your doctor. The label says that abrupt withdrawal should be avoided, and that prolonged use can cause adrenal insufficiency and dependence.
- Tell any medical staff who care for you that you take corticosteroids.
- The label says that after prolonged therapy, stopping may cause corticosteroid withdrawal symptoms, including muscle pain, joint pain, and malaise (a general unwell feeling).
- The label says that during periods of unusual stress, such as trauma, surgery, or illness, the dose may need to be increased. Talk with your prescriber about this.
- The label says vaccines and other treatments may need review with your prescriber while taking corticosteroids.
🔀 Prednisone with other medicines, food and alcohol
The label says to discuss these with your doctor or pharmacist
- Potassium-depleting medicines, such as amphotericin B injection and diuretics (water pills): the label says patients should be watched closely for low potassium.
- Macrolide antibiotics: the label says they can significantly decrease how fast the body clears corticosteroids.
- Anticholinesterase medicines, such as neostigmine and pyridostigmine: the label says they may cause severe weakness in people with myasthenia gravis.
- Oral anticoagulants such as warfarin: the label says corticosteroids usually reduce warfarin's effect, so clotting tests may be checked often.
- Antidiabetic medicines: corticosteroids may raise blood sugar, so diabetes medicine doses may need adjusting.
- Isoniazid (an antitubercular drug): the label says its levels may be decreased.
- Bupropion: the label says both can lower the seizure threshold, so they should be used together only with extreme caution.
- Cholestyramine: the label says it may increase how fast the body clears corticosteroids.
- Cyclosporine: the label says using both may increase the activity of each, and convulsions have been reported.
- Digitalis glycosides (heart medicines): the label says low potassium may raise the risk of irregular heart rhythms.
- Estrogens, including oral contraceptives: the label says they may increase the effect of certain corticosteroids.
- Fluoroquinolone antibiotics: the label says the risk of tendon rupture may be increased when used together.
- The label lists more interactions than are shown in the text provided. Ask your pharmacist for the full list.
Alcohol and food
The label does not discuss alcohol. It does say that stomach irritation may be reduced when prednisone is taken with food or milk, or before or after meals.
🤰 Prednisone in pregnancy and breastfeeding
Pregnancy
The label gives this medicine Pregnancy Category C. It says corticosteroids have caused birth defects (such as cleft palate) in animal studies, and there are no adequate, well-controlled studies in pregnant women. The label says corticosteroids should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. Babies born to mothers who received substantial doses during pregnancy should be watched closely for signs of low adrenal activity.
Breastfeeding
The label says systemically given corticosteroids pass into human milk and could affect a nursing infant's growth or hormone production. It says a decision should be made whether to stop nursing or to stop the drug, taking into account how important the drug is to the mother.
🗓️ Storage, missed doses and taking too much
Storage
Store at 20 to 25 degrees C (68 to 77 degrees F), in a tight, light-resistant container, as defined in the USP.
If a dose is missed
The label does not say.
If too much is taken
The label does not say.
🗒️ Questions to ask about Prednisone
🎯 Check what you understood
1. According to the label, when is it recommended that prednisone be taken?
2. What does the label say about stopping prednisone?
3. According to the label, which infections are a special concern for people taking corticosteroids?
❓ Prednisone: frequently asked questions
Is prednisone a steroid?
The label describes prednisone as a glucocorticoid, which is an adrenocortical steroid. It says these steroids can be naturally occurring or synthetic.
Should I take prednisone with food?
The label says stomach irritation may be reduced if prednisone is taken before, during, or immediately after meals, or with food or milk. Follow the instructions from your prescriber or pharmacist.
Can I stop prednisone suddenly?
The label says not to stop taking it without first talking to your doctor. It says abrupt withdrawal should be avoided, and that long-term use may need to be reduced gradually.
Why does prednisone raise infection concerns?
The label says corticosteroids suppress the immune system and can increase the risk of infections, and can mask some signs of infection. It says to watch for infection and seek medical advice for a fever or other signs of infection.
Is prednisone safe during pregnancy?
The label gives it Pregnancy Category C and says it should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. Discuss this with your prescriber.
🧪 Tests and reports linked to Prednisone
The label text mentions these. If you have one of these reports, get every line of it explained.
- HbA1c and glucose
a test or report linked to this medicine
- Metabolic panel (BMP, CMP)
a test or report linked to this medicine
- Kidney function tests
a test or report linked to this medicine
- Clotting tests (PT, INR)
a test or report linked to this medicine
- Complete blood count (CBC)
a test or report linked to this medicine
- Thyroid tests
a test or report linked to this medicine
📖 Medical words used on this page
- Adrenal insufficiency
Adrenal insufficiency means the adrenal glands do not make enough cortisol. A sudden severe form, adrenal crisis, is an emergency.
- Allergic reaction
An allergic reaction is when the immune system overreacts to something harmless, such as a medicine or food, causing symptoms from a rash to swelling.
- Anaphylaxis
Anaphylaxis is a severe, whole-body allergic reaction that comes on fast and is a medical emergency needing urgent help.
- Anemia
Anemia means the blood has fewer healthy red blood cells or less hemoglobin than the reference range printed on the report.
- Angioedema
Angioedema is swelling deep under the skin, often of the lips, face, tongue or throat. Swelling of the throat or tongue needs emergency help.
- Ankylosing spondylitis
Ankylosing spondylitis is a long-term inflammatory arthritis that mainly affects the spine and the joints where the spine meets the pelvis.
- Antacid
An antacid is a medicine that neutralises stomach acid to give quick relief from heartburn and indigestion.
- Antibiotic
An antibiotic is a medicine that kills bacteria or stops them growing; it treats bacterial infections, not viral ones like colds or flu.
- Anticoagulant
An anticoagulant is a medicine that slows blood clotting, used to prevent or treat harmful clots. It raises the risk of bleeding.
- Bronchospastic Disease
Bronchospastic disease means a lung condition, such as asthma, in which the airways tend to tighten suddenly (bronchospasm).
- Congenital malformations
Congenital malformations are differences in the structure of the body that are present at birth, such as heart, spine or lip and palate defects.
- Corticosteroid
A corticosteroid is a medicine similar to the body's own hormone cortisol, used to reduce inflammation and calm the immune system.
- Discontinuation syndrome
Discontinuation syndrome is a set of symptoms that can appear when a medicine, often an antidepressant, is stopped suddenly or reduced too fast.
- Diuretic
A diuretic is a medicine that helps the kidneys remove extra salt and water from the body, so you pass more urine.
📖 Medical words on this page
⚖️ Compare
Have the leaflet or prescription in front of you?
Explain my leafletDecode my prescription🔗 Trusted sources about Prednisone
- Full official label on DailyMed ↗
US National Library of Medicine: the complete FDA label this page is based on
- Prednisone on MedlinePlus ↗
US National Library of Medicine's patient drug information
- Search the NHS website for Prednisone ↗
UK National Health Service
Report a side effect or check safety alerts
- Report a side effect in the US (FDA MedWatch) ↗
- Report a side effect in the UK (Yellow Card) ↗
- FDA recalls and safety alerts ↗
Explain your own documents
🔎 Look up another medicine
⭐ My medicines
Nothing saved yet.
🧩 Similar medicines
- Dexamethasone · A corticosteroid, a synthetic adrenocortical steroid medicine that lowers inflammation and suppresses the immune system
- Prednisolone · a corticosteroid, a type of steroid medicine. The label describes glucocorticoids as adrenocortical steroids, both naturally occurring and synthetic, that are readily absorbed from the stomach and intestines.
- Fluticasone Propionate · A corticosteroid, which is a steroid medicine, given as a nasal spray
Source: official FDA drug label (label updated 2026-09-08). Read the full label on DailyMed
MedicDecode explains the official label in plain words. It is not medical advice and does not replace your doctor or pharmacist. Never start, stop or change a medicine because of what you read here.