Sunstar GUM Canker-X Gel Review - For Relief From Mouth Ulcers And Canker Sores Canker Sore Updated July, 2022
Final Thoughts

Overall Score 64%

Sunstar Gum Canker-X Gel Review

Manufacturer’s Claim

The following review is for a product called Canker-X Gel, manufactured by GUM. This is claimed to be an Aloe Vera based formulation that helps with the treatment of canker sores, minor cuts, mouth sores, or abrasions. It is designed to provide a protective healing barrier, whilst also offering fast pain-relief with a soothing affect. In conclusion, this product aims to coat, hydrate and soothe the affected area. Read on to see if GUM Canker-X Gel is an effective canker sore treatment.


  • Polyvinylpyrrolidone
  • Water
  • Maltodextrin
  • Propylene glycerol
  • PEG-40 hydrogenated castor oil
  • Xanthan gum
  • Potassium sorbate
  • Sodium benzoate
  • Flavor
  • Disodium edetate
  • Benzalkonium cholride
  • Saccharin sodium
  • Sodium Hyaluronate
  • Glycyrrhetinic acid
  • Aloe vera gel

There are three main active ingredients found in Canker-X Gel. The first is Polyvinylpyrrolidone which acts as the protective coating and helps promote healing. Then there is Sodium Hyaluronate hydrates the sore and lastly Aloe Vera soothes the sore.

This product lacks Vitamin B12, which is essential as it decreases the severity of the problem. It also lacks Propolis which has antibacterial and anti-fungal properties and it reduces inflammation and speeds up the healing process.


The manufacturer recommends that the gel be applied directly to the canker or mouth sore as often as needed. It is best to apply 1 or 2 drops to the affected area. Apply it with the finger or a cotton swab. Do not touch the sore with the tongue for at least 2 minutes so that the gel can dry. It is also recommended to avoid eating or drinking for at least an hour.


A tube of Canker-X Gel can be purchased online from the manufacturer’s website for $6.95. This is quite cheap and may indicate low quality ingredients. The manufacturer does not offer discounts or bulk packages for purchase.


The manufacturer offers a 30-day money-back guarantee. However, this is only for products that are sealed and in their original packaging. Customers who are not satisfied with the results of this product will not be refunded. Hence, this is a weak guarantee that will hinder customers from purchasing the product.

Sunstar Gum Canker-X Gel Review – The Bottom Line

There are a few things we like about GUM Canker-X Gel. It comes in a tube with a unique applicator nozzle for easy application. The manufacturer has also ensured that the customer has clear instructions on how to use the gel and what to do after it has been applied.

There are however a few things we are concerned about, First of all, the product lacks effective clinically proven ingredients and it does not include Vitamin B12 or Propolis. High quality canker sore treatments contain these essential ingredients and also provide a total care solution for treatment and prevention thereof. Yet, this product does not hold these standards. Another concern is that the manufacturer does not offer any form of a discount or bulk purchases.

Finally, the manufacturer lacks to offer a strong money-back guarantee on their product. Only sealed products in their original packaging will be accepted for a reimbursement. This is an inconvenient risk for customers if they are not satisfied with the results of the product. Due to these reasons, we do not recommend GUM Canker-X Gel.

Reviewed & delivered by our panel of experts at Reviewy.