Betamethasone (Topical) — 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 Betamethasone (Topical)?
Betamethasone is a potent topical corticosteroid available as cream, ointment, and lotion for skin inflammation. This medication is funded by Pharmac for inflammatory skin conditions.
What is Betamethasone (Topical) Used For?
Betamethasone topical preparations are used for inflammatory and pruritic skin conditions including eczema (atopic dermatitis), psoriasis, contact dermatitis, seborrhoeic dermatitis, lichen planus, and insect bite reactions.
How Does Betamethasone (Topical) Work?
Betamethasone binds to intracellular glucocorticoid receptors in skin cells, reducing the expression of pro-inflammatory genes — decreasing the production of cytokines, prostaglandins, and other mediators of inflammation. This reduces redness, swelling, itching, and scaling of inflamed skin.
How to Take Betamethasone (Topical)
Apply a thin layer to the affected area once or twice daily. Use the minimum effective amount. For the face and skin folds: use only short courses (5–7 days) of lower potency preparations. Scalp lotion (Betnovate®) for scalp psoriasis: apply once daily. Avoid applying under occlusive dressings unless directed.
Common Side Effects of Betamethasone (Topical)
- Skin thinning (atrophy) with prolonged use
- Stretch marks (striae) in skin fold areas
- Perioral dermatitis (with facial use)
- Local infections (bacterial, fungal)
- Acne and folliculitis
Serious Side Effects — Seek Medical Attention
Contact your doctor or call 111 immediately if you experience any of the following:
- HPA axis suppression (with prolonged extensive use — particularly in children)
- Cushing’s syndrome (rare — with large areas, prolonged use, or occlusive dressings)
- Skin atrophy and telangiectasia (permanent with excessive use)
- Glaucoma (if used near eyes)
Drug Interactions
Betamethasone (Topical) may interact with other medicines. Always inform your doctor and pharmacist of all medications you are taking. Key interactions include:
- Minimal systemic drug interactions with topical use under normal conditions
New Zealand Prescribing Information
Betamethasone valerate 0.1% cream, ointment, and lotion (Betnovate® and generics) are funded by Pharmac. Betamethasone dipropionate 0.05% (Diprosone®) is available for more resistant cases. Betamethasone is a Group 3 (potent) topical corticosteroid — should not be applied to the face, groin, or axillae for more than 5–7 days at a time. For mild conditions and facial use, a Group 1 (mild) corticosteroid such as 1% hydrocortisone is more appropriate.
Frequently Asked Questions
How much betamethasone cream should I use?
Apply only a thin smear — enough to just cover the affected skin. The “fingertip unit” (FTU) is a helpful guide: one FTU (from the tip of the index finger to the first joint) covers an area about the size of two palms. Applying more does not increase effectiveness and increases side effect risk.
Can I use betamethasone on my face?
Potent topical steroids like betamethasone should be avoided on the face for more than 5–7 days. Prolonged facial use causes skin thinning, telangiectasia, and perioral dermatitis. For chronic facial eczema, a mild steroid (1% hydrocortisone) or topical calcineurin inhibitor (tacrolimus) is preferred.
⚠️ 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: