Methylprednisolone — NZ Medication Guide
📋 Reviewed by a Registered Pharmacist NZ — This information is for general educational purposes only and does not replace professional medical advice. Always consult your doctor or pharmacist before starting, stopping, or changing any medication.
What is Methylprednisolone?
Methylprednisolone is a potent synthetic corticosteroid used for acute inflammatory and autoimmune conditions, often given by injection. This medication is funded by Pharmac for severe inflammatory conditions.
What is Methylprednisolone Used For?
Methylprednisolone is used for acute severe inflammatory conditions (e.g., multiple sclerosis relapse, acute asthma, organ rejection), rheumatoid arthritis (joint injections), and spinal cord injury (IV pulsing — though evidence is now disputed).
How Does Methylprednisolone Work?
Like other glucocorticoids, methylprednisolone binds to glucocorticoid receptors and suppresses inflammatory gene expression. It is approximately 5 times more potent than prednisolone and has intermediate mineralocorticoid activity.
How to Take Methylprednisolone
Available as oral tablets (Medrol® 4 mg, 16 mg), IM/IV injection (Solu-Medrol® 40 mg, 125 mg, 500 mg, 1 g), and intra-articular injection. For MS relapse: IV 500–1000 mg/day for 3–5 days. Oral packs (Medrol dose pack) are tapered over 6 days.
Common Side Effects of Methylprednisolone
- Insomnia
- Hyperglycaemia
- Fluid retention
- Mood changes
- Increased appetite
Serious Side Effects — Seek Medical Attention
Contact your doctor or call 111 immediately if you experience any of the following:
- Same as prednisolone and dexamethasone: adrenal suppression, osteoporosis, avascular necrosis, serious infections, Cushing’s syndrome
- IV high-dose pulses: cardiac arrhythmias (rare — administer slowly)
Drug Interactions
Methylprednisolone may interact with other medicines. Always inform your doctor and pharmacist of all medications you are taking. Key interactions include:
- Same drug interactions as other corticosteroids (NSAIDs, enzyme inducers, live vaccines, antidiabetics)
- CYP3A4 interactions relevant for IV high-dose pulses
New Zealand Prescribing Information
Methylprednisolone sodium succinate injection (Solu-Medrol®) is funded by Pharmac for inpatient use. Oral methylprednisolone (Medrol® dose packs and tablets) is also funded. It is widely used in NZ for MS relapses and acute severe inflammatory conditions in hospital settings. Intra-articular methylprednisolone (Depo-Medrol®) is used for joint injections in rheumatology and sports medicine.
Frequently Asked Questions
How is methylprednisolone used for MS relapses?
Intravenous methylprednisolone 500–1000 mg/day for 3–5 days is the standard treatment for MS relapses that cause significant disability. It shortens the duration of relapses but does not change the long-term course of MS. It is given in hospital or as a day procedure.
Can methylprednisolone injections into a joint damage the cartilage?
Repeated joint injections can potentially damage cartilage with very frequent use. Generally, no more than 3–4 injections per joint per year are recommended. A single injection is usually safe and can provide substantial relief for inflammatory arthritis flares.
⚠️ Disclaimer: This page is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your doctor or a qualified health provider. In New Zealand, medication availability and funding may vary — check with Pharmac or your pharmacist for current information.
Reviewed by a Registered Pharmacist NZ
References & Further Information
The following New Zealand and international resources were used to inform this page: