What is Prednisone: Uses, Warnings & Interactions

Medically reviewed by Anne JacobsonMD, MPH
Board-Certified Family Physician
Updated May 14, 2025  •  Published Dec 30, 2020
Fact Checked

Prednisone is a commonly prescribed corticosteroid used to treat a variety of common medical conditions involving allergies, inflammation, or an overactive immune system. Prednisone affects nearly every system in the body, so it’s a powerful treatment but can also have significant side effects. Healthcare providers try to use it at the lowest effective dose for the shortest time possible.

Prednisone overview

BRAND NAMES:

  • Prednisone Intensol, Rayos

Generic Names:

  • Prednisone

Uses:

  • Treats many diseases and conditions, especially problems related to inflammation or autoimmune conditions

Therapeutic Classes:

  • Corticosteroid, systemic corticosteroid, immunosuppressant, endocrine-metabolic agent

Forms:

  • Tablet, delayed-release tablet, oral solution (liquid)

How it’s taken:

  • By mouth

What is Prednisone used for?

Prednisone may be used to treat inflammation, asthma, inflammatory arthritis, autoimmune diseases, hormone disorders, skin and soft tissue diseases, blood disorders, cancer, and other conditions.

Expert tips for using prednisone

  • Prednisone is a powerful and often life-saving medication. Take it as advised by a healthcare professional.

  • As a strong medication, prednisone can also have significant side effects. Only take it as directed.

  • If you have been taking prednisone for more than a few days, don’t stop it suddenly. Your healthcare provider will instruct you how to lower the dose over a period of time before stopping it.

  • Try to take prednisone at around the same time each day with food.

  • Because prednisone affects the immune system, you could be more prone to infections while taking it. Seek medical attention if you’re not feeling well.

What form(s) does Prednisone come in

  • Tablet

    • 1 mg

    • 2.5 mg

    • 5 mg

    • 10 mg

    • 20 mg

    • 50 mg

  • Delayed-release tablet

    • 1 mg

    • 2 mg

    • 5 mg

  • Oral solution (liquid)

    • 5 mg/5 mL

    • 5 mg/mL

What are common Prednisone doses?

  • For allergic and inflammatory reactions in adults: 5–60 mg per day divided into one to four daily doses

    • In children: 0.05-2 mg per kg per day divided into one to four daily doses

  • For asthma in adults:

    • Emergency treatment of flare-ups: 40–80 mg taken once daily or divided into two daily doses

    • Short-burst outpatient treatment: 40–60 mg divided into one or two daily doses for 3 - 10 days

    • Persistent asthma: 7.5–60 mg taken once per day or once every other day

  • For asthma in children: 

    • Hospital management or short burst treatment: 1–2 mg per kg per day divided into one or two doses for 3 to 10 days

    • Persistent asthma: 0.25–2 mg per kg per day taken once per day or every other day

  • For autoimmune disorders: 5–60 mg taken per day

    • In children: 0.05–2 mg per kg per day divided into one to four daily doses

  • For cancer: Dosages vary depending on the condition and the role of prednisone in cancer treatment

  • For adrenal gland hormone replacement in adults: 4-5 mg per meter squared of body area taken daily

    • In children: 4–20 mg per meter squared of body area taken daily in 1 to 4 divided doses

Most prednisone doses will depend on the condition being treated, body weight, and a person’s response to the drug.

Common Prednisone prescriptions

  • predniSONE
    120ml of 5mg/5ml bottle

  • predniSONE
    500ml of 5mg/5ml bottle

  • predniSONE
    21 tablets therapy pack box

  • predniSONE
    48 tablets therapy pack box

  • predniSONE
    21 tablets therapy pack disp pack

  • predniSONE
    48 tablets therapy pack disp pack

  • predniSONE
    10mg tablet

  • predniSONE
    1mg tablet

  • predniSONE
    2.5mg tablet

  • predniSONE
    20mg tablet

  • predniSONE
    50mg tablet

  • predniSONE
    5mg tablet

How to take Prednisone

  • Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.

  • Take this medication with food.

  • Swallow the delayed-release tablet whole. Do not crush, break, or chew it.

  • Measure the liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Store the medicine in a closed container at room temperature, protected from moisture. Do not freeze the oral liquid.

  • Discard the oral solution 90 days after the bottle has been opened.

What to do if you miss a dose of Prednisone

  • If a dose is missed, take it when remembered. If it’s almost time for the next dose, skip the missed dose and take the next dose as scheduled. 

  • Do not take extra medicine to make up for a missed dose.

Prednisone contraindications

  • This medicine is not right for everyone. 

  • Prednisone should not be taken by anyone who has had an allergic reaction to prednisone or by anyone who has a fungal infection of the internal organs.

Prednisone warnings

  • Because of possible side effects, healthcare providers try to use the lowest possible dose.

  • Your doctor will perform lab tests at regular visits to monitor the effects of this medicine. Keep all appointments.

  • Tell your doctor if you are pregnant or planning to become pregnant. Though prednisone is not prohibited during pregnancy, it increases the risk of some types of birth defects. 

  • Tell your doctor if you’re breastfeeding or plan to breastfeed.

  • Tell your doctor if you have:

    • Kidney disease

    • Liver cirrhosis

    • Adrenal gland problems

    • Heart failure

    • High blood pressure

    • Diabetes

    • Osteoporosis

    • Blood clotting problems

    • Thyroid problems

    • Any mental health or emotional issues (including depression)

    • Muscle disorders, including myasthenia gravis

    • Stomach or bowel problems (including ulcers or diverticulitis)

    • An active infection (including herpes eye infection, tuberculosis, or parasitic infection)

    • Latent tuberculosis that hasn’t been treated

  • This medicine could cause you to get infections more easily, especially at high doses.

    • Avoid people who are sick with an infection. 

    • Tell your doctor right away if you are exposed to chickenpox, measles, or other serious infections

  • This medicine may also cause the following problems:

    • Changes in mood or behavior

    • High blood pressure

    • Salt and water retention

    • Decrease in potassium and calcium levels

    • Adrenal gland problems

    • Eye problems or changes in vision (including cataracts or glaucoma)

    • Bone problems (including osteoporosis)

    • Increased risk for cancer (especially Kaposi’s sarcoma)

    • Growth suppression in children.

  • While taking this medicine, tell your doctor about any extra stress or anxiety in your life, including other health concerns and emotional stress. During periods of extra stress, the dose might need to be changed for a short time.

  • Do not stop using this medicine suddenly. Your doctor will need to slowly decrease your dose before you stop it completely.

  • Tell any doctor who treats you that you are using this medicine. This medicine may affect certain test results.

Prednisone interactions

  • Because of possible drug interactions, tell healthcare providers you are using this medicine.

  • Tell the doctor prescribing prednisone about all prescription medications, over-the-counter drugs, and supplements you are taking.

  • Because of the risk of infection, live vaccines cannot be given to people taking corticosteroids like prednisone.

  • Avoid alcohol when taking prednisone. 

  • Medications that can cause problems when taken with prednisone include:

  • NSAIDs such as aspirin. ibuprofen, or naproxen

  • Diuretics

  • Diabetes medications

  • Estrogens (birth control pills or hormone replacement therapy)

  • Blood thinners

  • Macrolide antibiotics such as azithromycin

  • Tuberculosis antibiotics

  • Drugs that block cholinesterase (in people with myasthenia gravis)

  • Aminoglutethimide, amphotericin B, cholestyramine, cyclosporine, digoxin, digitalis, and isoniazid

  • This medicine may interfere with vaccines. Ask your doctor before you get a flu shot or any other vaccine.

  • Some drugs slow down or speed up the body’s metabolism of prednisone. If these drugs are combined with prednisone, doses may need to be modified. 

    • Some examples include carbamazepine, phenytoin, ketoconazole, phenobarbital, and rifampin.

Prednisone side effects

Serious side effects

Prednisone can cause serious side effects. Talk to a healthcare provider if you notice: 

  • Fever, chills, cough, sore throat, and body aches

  • Depression, trouble sleeping, or unusual thoughts, feelings, or behaviors

  • Severe stomach pain, nausea, vomiting, or red or black stools

  • Chest pain or shortness of breath

  • Rapid weight gain, swelling in your hands, ankles, or feet

  • Trouble seeing, blurred vision or other changes in vision, eye pain, headache

  • Skin changes or growths

  • Muscle pain or weakness

  • Seizures

  • Bone pain, fractures, or a decrease in height

  • Dark freckles, skin color changes, coldness, weakness, tiredness, nausea, vomiting, or weight loss

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

Less Serious Side Effects

  • Mild changes in mood or behavior

  • Increased appetite

  • Weight gain

  • Fluid retention

  • Round, puffy face 

  • Fatty deposits around your neck, upper back, breast, face, or waist

  • Skin changes such as acne or hair growth

  • Changes in menstrual cycle

  • Trouble sleeping

  • Mild headache or dizziness

Medically reviewed by Anne JacobsonMD, MPH
Board-Certified Family Physician

Anne Jacobson, MD, MPH, is a board-certified family physician, writer, editor, teacher, and consultant. She is a graduate of University of Wisconsin School of Medicine and Public Health, and trained at West Suburban Family Medicine in Oak Park, Illinois. She later completed a fellowship in community medicine at PCC Community Wellness and a master's in Public Health at the University of Illinois-Chicago. She lives with her family near Chicago.

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