Indications
Mint oil (peppermint or mint essential oil, rich in menthol) is mainly used in pain-relieving balms, gels and sprays applied to the skin. It is used for:
- Muscle aches, sprains, stiffness and back pain
- Mild joint pain
- Tension headache (applied to the temples)
- Relief of a blocked nose when inhaled from a rub
Special enteric-coated peppermint oil capsules taken by mouth are also used for irritable bowel syndrome, but those are a different product.
How It Works
Menthol, the main part of mint oil, activates cold-sensing nerve endings in the skin, giving a cooling feeling that distracts from and dulls pain signals (a counter-irritant effect). It also slightly increases blood flow to the area and has a mild local anaesthetic action. Its vapour gives a feeling of clearer breathing.
Dosage and Administration
For use on the skin: apply a small amount to the painful area and rub in gently, usually 3 to 4 times a day or as directed on the label. Wash your hands after use. Do not apply to broken skin, and do not cover tightly with a bandage or use with a heating pad. Do not use on the face or chest of infants and young children.
Interactions
No important interactions are expected with use on the skin. Avoid using other heat rubs or creams on the same area at the same time. When peppermint oil is taken by mouth, antacids and acid-reducing medicines may break down the capsule coating early and cause heartburn.
Contraindications
- Infants and children under 2 years (menthol near the face can cause breathing problems)
- Broken, irritated or infected skin
- Known allergy to mint, menthol or any ingredient
Side Effects
Possible side effects include:
- Skin redness, burning or stinging
- Allergic skin rash
- Eye irritation if it gets into the eyes
Rarely, menthol products have caused skin burns or blistering. Stop use and get urgent medical help if you notice severe burning, blistering or swelling of the skin, or signs of allergy such as swelling of the face or difficulty breathing. If a child swallows the product, get medical help straight away.
Pregnancy and Lactation
Small amounts applied to the skin are not expected to cause harm. During breastfeeding, do not apply to the breast or nipple area, so the baby does not take it in. Ask your doctor before using large amounts.
Precautions and Warnings
- For external use only (balms and rubs). Keep away from the eyes, mouth and other sensitive areas.
- Do not use with heating pads or tight bandages.
- See a doctor if pain lasts more than 7 days, keeps coming back, or comes with swelling, redness or fever.
- Seek urgent help for sudden severe headache, or headache with weakness, confusion or a stiff neck.
Overdose
Swallowing mint oil or menthol rubs can be dangerous, especially for children, and may cause vomiting, drowsiness, fits or breathing problems. Seek emergency medical help straight away and take the pack with you.
Therapeutic Class
Topical counter-irritant analgesic
Storage
Store below 30°C in a dry place, away from light and out of the reach of children. Close the container tightly; the product may be flammable, so keep away from flames.
Prepared by the Oshud Alo team from standard drug references. For information only; always follow your doctor's advice.