
Important Notice
The medication images on this site are sourced from NHG Health’s internal formulary and are provided solely for identification and educational purposes. They may not represent all available brands, formulations, or packaging of medications registered in Singapore. While reasonable efforts have been made to ensure the images accurately reflect the actual medications, colour, shape, and appearance may vary due to manufacturing differences, batch variations, and display settings.
Nicotine Replacement Therapy (NRT) delivers nicotine without the other harmful chemicals present in cigarette smoke. It reduces the withdrawal symptoms experienced when you are trying to quit smoking, allowing you to focus on the other aspects in your effort to quit smoking
Nicotine gum releases a dose of nicotine when chewed to reduce the urge to smoke.
You can also find out about this medication by watching these videos:
They are available in English, 中文, Melayu and தமிழ்: Nicotine Replacement Therapy - Gum
When you feel the urge to smoke, chew one gum to release a taste or until you feel a tingling sensation then park the gum between your cheek and gum. Continue chewing the gum when the taste has faded. Repeat for about 30 minutes until the gum has no more taste, then spit it out. You can chew on one gum every 1-2 hours.
Do not swallow the gum.
Do not use more than the recommended maximum number of gums as instructed by your healthcare professional or use more than one gum each time.
You should stop smoking once you start to use NRT. Smoking and using NRT at the same time may increase the risk of adverse effects from the additive effects of nicotine in your body.
If you continue to feel the urge to smoke or experience severe nicotine withdrawal symptoms even after using the NRT gums, please inform your healthcare professional as you may need other types of NRT.
Inform your healthcare professional if:
- You are pregnant, planning to become pregnant, or breastfeeding.
- You recently had a heart attack or stroke.
- You have active peptic ulcer disease.
- You are using dentures.
- You have any other medical conditions.
- You are taking any other medications, including supplements, traditional medications and herbal remedies.
- You are less than 18 years old.
- Throat irritation
- Jaw ache
- Increased salivation
- Hiccups
- Dry mouth
- Flatulence
- Stomach discomfort
- Heartburn
- Nausea and vomiting
- Dizziness
- Headache
These side effects usually occur as a result of intense chewing of gum. Make sure to park the gum between your cheek and gum once the taste appears and take longer breaks in between gums to reduce these side effects.
The symptoms of a drug allergy include one or more of the following:
- Swollen face/eyes/lips/tongue
- Difficulty in breathing
- Itchy skin rashes over your whole body
If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately.
You can also find out about drug allergies by watching these videos:
They are available in English, 中文, Melayu and தமிழ்: Drug Allergies
- Avoid coffee, tea, juices, acidic and fizzy drinks 15 minutes before and during use of nicotine gum as this may reduce nicotine absorption.
- Nicotine may reduce the effect of certain medications. When NRT dose is reduced or stopped, adjustments to these medications may be necessary.
- These medications include:
- Benzodiazepines (e.g. diazepam, lorazepam)
- Insulin
- Beta-blocker (e.g. bisoprolol, atenolol)
- Opioid painkillers (e.g. codeine)
- Inform your doctor or pharmacist about other medications – including over-the-counter medications, supplements and traditional/herbal remedies – that you are currently taking as they may affect the way you benefit from NRT.
Store in a cool and dry place, away from direct sunlight. Keep this medication away from children.
Discard the gum properly into the empty blister packaging or into a tissue paper before disposing into a black trash bag. Seal it tightly before throwing into the rubbish chute or bin.
Disclaimer
The content of this article does not replace the information from your healthcare professional. Please consult your healthcare professional for more information.
This article is jointly developed by members of the National Medication Information workgroup. The workgroup consists of cluster partners (NHG Health, National University Health System and SingHealth), community pharmacies (Guardian, Unity and Watsons) and Pharmaceutical Society of Singapore (PSS).
The images and video in this article has been developed by the Singapore National Asthma Programme (SNAP) and have been reviewed by the PSS-National Medication Information workgroup.

