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Drug reference

Prednisone

Prednisone · Rayos delayed-release

A systemic glucocorticoid used for selected inflammatory, immune and endocrine disorders. This reference focuses on immediate-release tablets and delayed-release prednisone, with individualized dosing and adrenal-withdrawal precautions.

Therapeutic class
Systemic glucocorticoid
Representative product
Prednisone · 5 mg immediate-release tablet
Reference focus
Oral tablets · immediate and delayed release
Essential safety

Review infection risk and the withdrawal plan.

Prednisone can suppress immunity and adrenal function. Do not change or stop prolonged treatment without a clinician-directed plan. Report infection exposure, severe mood changes, black stools or marked weakness; illness/surgery may require stress-dose coverage.

Warnings and precautions
01

Indications

Broad label indications require a disease-specific treatment decision.

Labeled oral indications

Selected immediate-release labeling covers endocrine conditions, rheumatic/connective-tissue disease, severe allergic/skin/ocular inflammatory disorders, selected pulmonary/hematologic disorders, neoplastic palliation, nephrotic syndrome and inflammatory bowel disease. Examples include RA/lupus flares, severe asthma/allergy unresponsive to usual treatment, and ulcerative colitis/Crohn-type regional enteritis. Selected infections require appropriate anti-infective co-treatment. Hydrocortisone/cortisone are preferred for adrenal replacement; mineralocorticoids may also be needed.

Delayed-release scope and clinical selection

Delayed-release labeling also includes selected transplant-rejection and additional disease indications. Treat its indication list as regulatory wording rather than a recommendation to use steroids for every listed condition. Choice, duration and combination treatment depend on contemporary disease guidance; this profile does not supply disease-specific flare protocols. Delayed release is not an emergency rescue substitute.

02

Dosage and administration

Dose depends on the diagnosis, severity, response and exposure duration.

Individualized oral dosing

Both selected full labels describe initial doses often 5–60 mg/day; less severe illness may need less, and some conditions require more. Continue/adjust until response, then reduce to the lowest effective maintenance dose. Pediatric dosing follows disease severity and response rather than a single age/weight ratio. No universal pediatric mg/kg regimen or maximum is inferred.

FormulationAdministration
Immediate-release tabletTake with food or milk to reduce stomach irritation. For a prescribed single daily dose, selected label favors morning before 9 am; divided schedules depend on the regimen.
Delayed-release prednisone / RayosTake with food; swallow intact, without breaking/dividing/chewing. Release starts ~4 hours after intake; choose timing for the disease and formulation. Do not automatically apply IR morning timing.
IR → delayed releasePrescriber uses an equivalent glucocorticoid dose based on relative potency and adapts timing; prednisone/prednisolone 5 mg correspond to methylprednisolone 4 mg or hydrocortisone 20 mg for the label’s oral/IV comparison.

Tapering and adrenal recovery

The 2024 ESE/Endocrine Society guideline generally suggests no adrenal taper/testing for courses <3–4 weeks. Longer treatment should be tapered only when the disease is controlled and steroids are no longer needed; reduce toward physiologic prednisone-equivalent 4–6 mg/day, then individualize clinical monitoring or morning cortisol testing. Disease relapse and withdrawal symptoms may alter the plan. Labels caution against abrupt withdrawal after prolonged therapy; no fixed taper fits everyone.

Renal, hepatic and stress considerations

No fixed eGFR/hepatic dose formula is provided. Renal insufficiency, hypertension and HF increase concerns from salt/water retention and potassium loss. Cirrhosis can enhance corticosteroid effects through reduced metabolism; thyroid status also affects clearance. Acute stress may require a rapidly acting steroid or supplemental coverage rather than relying on delayed-release timing.

03

Safety

Immunosuppression, metabolic effects and adrenal suppression affect all systemic regimens.

Warnings and precautions

  • Can cause HPA suppression, Cushing features and hyperglycemia; adrenal insufficiency may persist after withdrawal. Severe weakness, hypotension or vomiting after reduction/illness needs urgent assessment.
  • Infections may worsen, reactivate or be masked. Screen for hepatitis B before immunosuppressive/prolonged therapy; assess TB, Strongyloides or amebiasis risks as relevant. Varicella/measles exposure in a nonimmune patient needs prompt prophylaxis review.
  • Avoid systemic fungal infection except when required for a specific drug reaction under specialist care. Avoid live vaccines at immunosuppressive doses; inactivated responses may be reduced.
  • Monitor BP/fluid retention and potassium, especially with HF/renal disease; use great caution after recent MI. GI ulceration/perforation can occur with muted signs.
  • Mood changes, insomnia, mania, severe depression or psychosis, osteoporosis/fractures, myopathy, impaired healing and reduced child growth may occur. Cataracts/glaucoma and ocular infection require attention; avoid active ocular herpes simplex.
  • Systemic sclerosis requires particular caution: supplemental primary prednisolone labeling warns of potentially fatal scleroderma renal crisis. Monitor BP/creatinine; sudden hypertension or reduced urine needs urgent specialist assessment.

Contraindications

The selected immediate-release label formally contraindicates systemic fungal infection and ingredient hypersensitivity. The selected delayed-release section 4 lists hypersensitivity; fungal infection is an avoidance warning in section 5.2. Live vaccines are contraindicated at immunosuppressive corticosteroid doses. Distinguish the exact product’s section-4 wording from precautions.

Boxed warning status

No boxed warning appears in the selected prednisone tablet labels. Lack of a box does not reduce the significance of adrenal crisis, infection, bone loss or other systemic risks.

Adverse reactions and excessive exposure

Reported effects include appetite/weight gain, edema, increased BP/glucose, insomnia/mood changes, dyspepsia, acne/bruising and poor wound healing. Prolonged therapy can cause adrenal suppression, osteoporosis/osteonecrosis, cataracts/glaucoma and serious infections. Rates vary with dose/duration and cannot be inferred from spontaneous reports. Suspected overdose needs prompt medical/toxicology guidance; do not induce vomiting at home or abruptly stop chronic treatment to correct excess exposure.

04

Drug interactions

Interactions change exposure, glucose, potassium, bleeding and infection risks.

Clinically relevant interactions

CombinationAction
CYP3A4 inhibitors (azole antifungals, ritonavir, macrolides) / inducers (rifampin, phenytoin, carbamazepine)Exposure can rise/fall; review response, systemic toxicity and adjustment.
NSAIDs / aspirinGI adverse risk rises; aspirin clearance can change and withdrawal may increase salicylate levels.
WarfarinAnticoagulant response may increase or decrease; monitor INR/coagulation more frequently.
Antidiabetic agentsSteroid glucose elevation may require treatment adjustment and more checks.
Potassium-depleting diuretics / amphotericin B; digoxinMonitor potassium; hypokalemia increases arrhythmia risk with digoxin.
CyclosporineBoth drugs’ effects may rise; seizures have been reported.
Anticholinesterases in myasthenia gravisSevere weakness risk; specialist supervision and respiratory-support planning.
FluoroquinolonesTendon rupture risk increases, especially in older adults.
Bupropion / thalidomideReview seizure risk / serious skin reaction risk respectively.
Vaccines / skin testingAvoid live vaccine at immunosuppressive doses; immune/test responses may be blunted.
05

Use in specific populations

Children, older adults and pregnancy require exposure-specific assessment.

Pregnancy and lactation

Human corticosteroid pregnancy studies show a small, inconsistent orofacial-cleft association; underlying disease can confound growth/birth-weight outcomes. Weigh maternal benefit and fetal risk and observe infants after substantial maternal doses for adrenal suppression. Prednisolone enters milk; modern delayed-release labeling estimates infant exposure <1% of maternal daily dose with no reported infant adverse effects in cited reports, but prolonged high doses may affect growth/adrenal function. Balance breastfeeding and maternal treatment individually.

Pediatric and geriatric considerations

Pediatric evidence includes nephrotic syndrome >2 years and aggressive leukemia/lymphoma >1 month, with other indications supported partly by adult evidence; these are evidence descriptions, not a universal minimum age. Individualize treatment and monitor height/growth, BP, weight and infection. Older adults need cautious dosing and surveillance for bone loss, diabetes, hypertension, edema and infection.

Hepatic and renal impairment

Selected delayed-release PK studies have not evaluated renal/hepatic impairment. IR labeling notes increased effects in cirrhosis and cautions in renal insufficiency/HF. Individualize and monitor metabolic/fluid effects rather than assuming a numeric adjustment or absence of risk.

06

Clinical pharmacology

Prednisone is converted to active prednisolone and modifies inflammation and metabolism.

Mechanism of action and pharmacodynamics

Systemic glucocorticoid activity suppresses inflammatory/immune responses and affects glucose/protein/fat metabolism. Some mineralocorticoid activity contributes to sodium retention, hypertension and potassium loss; suppression of endogenous corticotropin contributes to adrenal suppression.

Pharmacokinetics

Activation / metabolism
Prednisone converts to active prednisolone; further metabolism occurs mainly in liver.
Delayed release
Approximately 4-hour lag; fed peak ~6–6.5 hours versus ~2 hours for IR in the cited comparison. Fasting decreases delayed-release exposure.
Elimination
Prednisolone metabolites are excreted in urine as sulfate/glucuronide conjugates; terminal prednisone/prednisolone half-lives ~2–3 hours in the label comparison.
Clinical interpretation
Equivalent total exposure with food does not make administration timing interchangeable.
07

Monitoring and counseling

Monitor disease response and cumulative steroid toxicity.

Monitoring parameters

  • Follow disease response and ongoing need; monitor BP, weight/edema, glucose and potassium during prolonged therapy.
  • Assess infection/exposure risk; obtain hepatitis B screening before immunosuppressive treatment and assess relevant latent infection risks.
  • Assess bone/fracture risk and preventive treatment; monitor children’s growth. Evaluate vision and check intraocular pressure with prolonged treatment (label threshold >6 weeks).
  • Monitor mood/sleep, GI bleeding or perforation symptoms, muscle weakness and signs of adrenal insufficiency during dose changes.

Patient counseling information

  • Follow the exact formulation schedule; take with food and swallow delayed-release tablets intact. Do not change a prolonged regimen without review.
  • Tell clinicians about current/recent steroid exposure before illness or surgery. If adrenal recovery is unconfirmed, stress coverage may be needed; hemodynamic instability or persistent vomiting requires urgent evaluation and parenteral treatment.
  • Report fever/infection exposure, black stools, severe mood changes, visual problems or profound weakness. Discuss vaccines before receiving them.
  • Keep an updated medicine list and a clinician-directed plan for tapering and missed doses.
08

Product identification

Identify strength and release formulation before dosing.

Representative oral product · Prednisone 5 mg

Dosage form / strength
Immediate-release tablet · 5 mg
Labeler
Par Health USA, LLC
Appearance / imprint
White, round, scored · 5094 / V
Example NDC
0603-5337-21 · 100 tablets

Dosage forms and strengths

Selected Par IR tablets: 1, 2.5, 5, 10 and 20 mg. Selected Dr. Reddy’s delayed-release label: 1 and 2 mg unscored tablets. The FDA Rayos brand label describes 1, 2 and 5 mg delayed-release tablets; this historical label does not establish current brand availability. Other tablet/liquid products require their own concentration and handling directions.

Storage and handling

Selected IR tablets: 20–25°C in a tight light-resistant container. Selected delayed-release tablets: 20–25°C, excursions 15–30°C, protected from light/moisture in a tight light-resistant container. Keep out of children’s reach and preserve labeled release formulation identification.

09

References

Original sources for the clinical and product information.

  1. DailyMed / National Library of MedicinePrednisone · Par Health immediate-release tablets

    Full public manufacturer label and patient instructions; SPL version 36, effective 20260731. Product-specific directions reviewed October 1, 2026.

  2. DailyMed / National Library of MedicinePrednisone · Dr. Reddy’s delayed-release tablets

    Full public manufacturer label and patient instructions; SPL version 5, effective 20260923. Product-specific directions reviewed October 1, 2026.

  3. U.S. Food and Drug AdministrationRayos · FDA prescribing information

    Public FDA label revised March 2024; historical brand reference for 1/2/5 mg delayed-release presentations and directions. Current brand marketing availability not asserted.

  4. Endocrine Society / European Society of EndocrinologyGlucocorticoid-induced adrenal insufficiency · ESE/Endocrine Society 2024

    Official public recommendations dated May 13, 2024; taper and stress coverage recommendations reviewed. Full journal evidence tables not claimed accessed.

  5. Strides Pharma UK Ltd / electronic medicines compendiumSystemic corticosteroids · Scleroderma renal crisis warning

    Primary prednisolone SmPC revised July 29, 2026; section 4.4 systemic-sclerosis class warning. Prednisolone is prednisone’s active metabolite; this is a supplemental UK safety reference, not a U.S. indication source.

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