Penthrox Inhaler (Green Whistle)

Penthrox is an analgesic inhaler commonly referred to as ""green whistle"", it provides fast-acting pain relief in emergency situations. It is used in pre-hospital and emergency medical settings to manage acute pain in patients.

Penthrox is an effective medicine in the management of acute pain in emergency situations. Its rapid efficacy, non-invasive administration, and flexible dosing make it an effective and convenient option for healthcare professionals.

Penthrox contains the active substance methoxyflurane, which is a medicine used to reduce pain, and is inhaled through the Penthrox inhaler.

Penthrox is intended to reduce the severity of pain, rather than stop it completely.

The active substance is methoxyflurane, each sealed bottle contains 3 ml methoxyflurane 99.9%.

Penthrox is a clear, almost colourless volatile liquid, with a characteristic fruity odour that becomes a vapour or gas when used with the Penthrox inhaler.

The pack contains one bottle of Penthrox methoxyflurane 99.9%, 3 ml inhalation vapour, and one Penthrox inhaler with activated carbon (AC) chamber.

Rapid efficacy: Penthrox provides pain relief within minutes of inhalation, making it an effective option for managing acute pain.

Non-invasive: Unlike other methods of pain relief such as injections or intravenous medications, Penthrox is administered through inhalation, making it a non-invasive option.

Flexible dosing: Penthrox allows for individualised dosing based on the patient's needs. The patient can control the amount of inhalation, ensuring they receive the appropriate amount of pain relief.

Easy to use: Penthrox comes with a portable inhaler, making it convenient and easy to administer in emergency situations.

Follow the instructions of the Package Leaflet.

The physician, doctor, nurse, paramedic, or person trained in administering Penthrox must provide and explain the Package Leaflet to the patient.

One or two 3 ml bottles containing 3 ml of PENTHROX can be used per administration. The maximum dose is two bottles containing 3 ml per administration. Do not inhale more than the maximum dose.

In the UK Penthrox is only licensed for use on adults, therefore it cannot be used on children.

Penthrox should only be given to patients by healthcare professionals.

Penthrox is self-administered under supervision of a healthcare professional trained in its administration.

Before administering Penthrox, make sure you have read and fully understood the Summary of Product Characteristics and educational materials, which provide important information about how to safely use the device to minimise risk of serious side effects. Safety information for Penthrox can be found here.

Training on the administration of Penthrox is available via the Galen Penthrox University.