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The nicotine inhaler is a device designed to mimic the sensory experience of smoking without delivering nicotine to the lungs. It consists of a nicotine-filled cartridge and a mouthpiece. Users inhale nicotine vapor into their mouth, where it is primarily absorbed through the oral mucosa. The amount of nicotine delivered varies with inhalation intensity and frequency. Each cartridge contains 10 mg of nicotine, with about 4 mg delivered and up to 2 mg absorbed. Common side effects include throat irritation, coughing, or sneezing. In most countries, nicotine inhalers are available only by prescription.1

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