dexamethasone vs prednisolone

PlainMeds reviewed this comparison against our methodology in August 2026. It places FDA and CMS record fields side by side, without recommending either medication.

Side-by-side comparison of dexamethasone and prednisolone. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

Drug Class
dexamethasone Corticosteroid
prednisolone Corticosteroid
Type
dexamethasone Prescription
prednisolone Prescription
Summary
dexamethasone

Dexamethasone (Decadron) is a corticosteroid medicine. It helps reduce inflammation and suppress the immune system.

prednisolone

Prednisolone eye drops reduce inflammation in your eye. It is a type of steroid medicine.

What It Treats
dexamethasone

This medicine treats many conditions, including allergies, skin problems, and breathing issues. It can also help with certain cancers, hormone problems, and nervous system disorders. Dexamethasone can also be used for short-term relief of arthritis and other joint problems.

prednisolone

This medicine treats swelling and redness in your eye. It can help with problems of the conjunctiva, cornea, and other parts of the front of your eye. It is used when the swelling responds to steroid treatment.

How It Works
dexamethasone

Dexamethasone works by decreasing inflammation in the body. It also changes how your immune system works. This can help reduce symptoms of various conditions.

prednisolone

Prednisolone is a corticosteroid. It works by reducing inflammation in the eye. This helps to relieve redness, swelling, and pain.

Common Side Effects
dexamethasone
  • Increased appetite
  • Weight gain
  • Fluid retention
  • Mood swings
  • Insomnia
prednisolone
  • Eye pain
  • Feeling like something is in your eye
  • Headache
  • Itching
  • Rash
FAERS Reports
dexamethasone
  • Fatigue 16,525
  • Diarrhoea 16,515
  • Plasma Cell Myeloma 13,768
  • Nausea 13,495
  • Pneumonia 13,291
prednisolone
  • Pyrexia 8,197
  • Dyspnoea 6,807
  • Pneumonia 6,760
  • Diarrhoea 6,510
  • Condition Aggravated 5,688
Serious Warnings
dexamethasone

If you have a systemic fungal infection, you should not take this medicine. Long-term use can also make it harder for your body to respond to stress.

prednisolone

Using steroid eye drops for a long time may cause glaucoma (increased pressure in the eye) or cataracts. It can also make it harder for your eye to heal if you have an injury. Tell your doctor if your symptoms do not improve after 2 days.

Pregnancy
dexamethasone

Talk to your doctor if you are pregnant or breastfeeding before taking this medicine. Dexamethasone may harm an unborn baby. It can also pass into breast milk.

prednisolone

Tell your doctor if you are pregnant or breastfeeding. It is not known if prednisolone eye drops will harm an unborn baby. Talk to your doctor about the risks and benefits.

Also Compare, Nearby Drugs

How to Read This dexamethasone vs prednisolone Comparison

dexamethasone is classified in the Corticosteroid drug class, while prednisolone sits within the Corticosteroid class. Because both drugs share the same classification, they are often considered interchangeable in theory, but clinical outcomes rarely track that cleanly. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, dexamethasone has 73,594 submissions while prednisolone has 33,962. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for dexamethasone or prednisolone.

Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.