Zinc Oxide
Indications
Zinc Oxide is used on the skin as a soothing, protective barrier. It is used for nappy (diaper) rash, minor skin irritation, chafing, minor burns, cuts and scrapes, and to protect skin from moisture in people with incontinence. It is also used in sunscreens to block the sun's rays, and in some products for eczema, haemorrhoids (piles) and wounds.
How It Works
Zinc oxide forms a layer on the skin that keeps out moisture, urine, stool and irritants. It has a mild drying and astringent effect and mild antiseptic action, which help the skin heal. In sunscreens it reflects and scatters ultraviolet (UV) rays.
Dosage and Administration
For use on the skin only. Clean and gently dry the area, then apply a thin layer as often as needed. For nappy rash, apply at each nappy change, especially at bedtime. As a sunscreen, apply generously 15 minutes before going out and reapply at least every 2 hours and after swimming or sweating. Follow the pack instructions for each product.
Interactions
No important interactions are known. Apply other skin medicines first, as a thick zinc layer may stop them reaching the skin, unless the doctor advises otherwise.
Contraindications
Allergy to zinc oxide or any ingredient of the product (some contain lanolin, fragrance or other ingredients that can cause allergy).
Side Effects
Usually very well tolerated. Rarely, itching, redness or rash where it is applied.
Stop using it and see a doctor if the rash worsens, spreads, blisters, oozes or shows signs of infection (pus, increasing pain, warmth or fever), or does not improve in about 7 days. Get urgent medical help for signs of a serious allergic reaction such as swelling of the face or throat or difficulty breathing.
Pregnancy and Lactation
Safe to use on the skin during pregnancy and breastfeeding, as almost none is absorbed. If used on the nipples, wipe off before feeding.
Precautions and Warnings
- For external use only. Avoid the eyes and mouth.
- Do not use on deep wounds, puncture wounds, animal bites or serious burns; see a doctor.
- Do not inhale powder forms, especially near babies.
Overdose
Using a lot on the skin is not harmful. If a large amount is swallowed, it may cause nausea, vomiting or diarrhoea; seek medical advice.
Therapeutic Class
Skin protectant (barrier and mild astringent); physical sunscreen.
Storage
Store below 30°C, away from light, with the cap closed, and out of the reach of children.
Prepared by the Oshud Alo team from standard drug references. For information only; always follow your doctor's advice.
All brands of Zinc Oxide