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The Science Behind Metallic Taste

The Science Behind Metallic Taste-MetaQil
Meet the Author-Sara Juliano-MetaQil

Meet the Author: Sara Juliano, RDH

I have been a registered dental hygienist for over a decade. I have had the pleasure of working with amazing patients and educating them on their oral health throughout my career. Recently, I made the conscious decision to branch out within the dental field, choosing to maintain my dental hygiene license, and become a dental educator. With a passion for oral and systemic health, I have seen clinically the direct impact systemic health can have on oral health. I will be extending my knowledge outside of the dental chair into the world and make an impact on the lives of others. Learn more about Sara, here

I have been a registered dental hygienist for over a decade. With a passion for oral and systemic health, I have seen clinically the direct impact systemic health can have on oral health. I will be extending my knowledge outside of the dental chair into the world and make an impact on the lives of others. Learn more about Sara, here

Meet the Author-Sara Juliano-MetaQil

Meet the Author: Sara Juliano, RDH

I have been a registered dental hygienist for over a decade. With a passion for oral and systemic health, I have seen clinically the direct impact systemic health can have on oral health. I will be extending my knowledge outside of the dental chair into the world and make an impact on the lives of others. Learn more about Sara, here

Most of us have never heard the word dysgeusia before, however, many of us have experienced an altered taste that can be described as metallic, sour, or bitter. Metallic taste is a taste disorder medically known as dysgeusia. 

Altered taste can be caused by a variety of  reasons including chemotherapyradiation, different medications, COVID-19, GERD, or various other health conditions 

Dysgeusia or Metallic Taste

Dysgeusia is an impairment or malfunction of the gustatory organ (sensory organ for taste) which alters the taste of food. Many of those suffering from dysgeusia state that they have an unpleasant or altered taste that is usually metallic or bitter in nature.

People who suffer from dysgeusia may have an increased risk for oral and systemic health issues, especially when the symptoms are persistent and chronic.

An altered, unpleasant taste increases the tendency to add excessive amounts of salts, fats, oils, condiments or sugars to satiate cravings. This may intensify the risk of diabetes, heart disease, obesity, and other serious systemic health complications.

On the other hand, those suffering from severe dysgeusia and metallic taste may experience significant weight loss due to loss of appetite and a decreased pleasure in eating. Unfortunately, this all can lead to poor nutrition. 

 

The risk for oral health diseases and tooth decay rates may also be affected due to an increased consumption of sugars, sweets, and fermentable carbohydrates.

 

Altered/Metallic Taste Specific to Gustatory Gland Malfunction May be Caused by:

medications can cause metallic taste
  • Vitamin deficiencies such as Zinc 
  • Chemotherapeutic agents 
  • Radiation therapy (usually associated to the head and neck region) 
  • Systemic diseases such as Sjogren’s 
  • Thyroid medications  
  • Antipsychotics 
  • Central nervous system diseases 
  • Cardiac medications 
  • Antibiotics  
  • Salivary gland dysfunction which causes xerostomia (dry mouth)
  • Diabetes  
  • Crohn’s disease 
  • Acid reflux 
  • Kidney diseases 
  • Antiparkinsonian medication 
  • Migraine medications 
  • Chemical exposure  
medications can cause metallic taste
  • Vitamin deficiencies such as Zinc 
  • Chemotherapeutic agents 
  • Radiation therapy (usually associated to the head and neck region) 
  • Systemic diseases such as Sjogren’s 
  • Thyroid medications  
  • Antipsychotics 
  • Central nervous system diseases 
  • Cardiac medications 
  • Antibiotics  
  • Salivary gland dysfunction which causes xerostomia (dry mouth)
  • Diabetes  
  • Crohn’s disease 
  • Acid reflux 
  • Kidney diseases 
  • Antiparkinsonian medication 
  • Migraine medications 
  • Chemical exposure  

Pathway of Taste from the Oral Cavity to the Brain

Gustatory receptors are found within the oral cavity and help process different tastes (gustation). Gustatory receptors and tastebuds release neurotransmitters when food is ingested. From there, sensory neurons are activated all the way up to our brain, allowing us to taste and enjoy our food! The pathway from the mouth to our perceived taste is as follows: 

  1. Taste buds contain taste cells that have neurological dendrite connectors where nerve sensory receptors migrate and stimulate sensory cells 2.
  2. Stimulation of sensory cells branching from the cranial nerves via the VII (Facial,) IX (glossopharyngeal), X (Vagus) 
  3. Cranial nerves VII, IX, X further stimulate nerve signaling receptor cells to areas of the brain (pons and the medulla oblongata) 
  4. From the medulla oblongata and pons, taste cells migrate up to the thalamus where they stimulate the gustatory cortex (sense organ for taste) 

The gustatory cortex contains over 10,000 taste buds, each one containing special receptorsEach receptor is attached at the base of the cell that is connected and exposed to the oral cavity via the papilla, these are felt as bumps on the tongue (cranial nerve VII), epiglottis (cranial nerve X), upper palate, and the pharynx (cranial nerve XI). 

MetaQil®

Metallic Taste Oral Rinse

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MetaQil Oral Rinse is first-of-its kind product that alleviates metallic taste in the mouth, providing long-lasting comfort and relief.

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Tastants and Metallic Taste

metallic taste and tastants - metaqil

When tastants (taste stimulating proteins) dissolve in saliva, they stimulate the gustatory gland and generate one of the taste receptor responses (sweet, salty, umami/savory, bitterness or sourness).  

Someone who is suffering from dry mouth may have an altered taste due to salivary dysfunction. This is because tastants stimulating proteins will decrease in correlation due to a decreased salivary flow. Therefore, the sense of taste is impaired and may create the sensation of consuming something with the taste of metal.  

When tastants (taste stimulating proteins) dissolve in saliva, they stimulate the gustatory gland and generate one of the taste receptor responses (sweet, salty, umami/savory, bitterness or sourness).  

Someone who is suffering from dry mouth may have an altered taste due to salivary dysfunction. This is because tastants stimulating proteins will decrease in correlation due to a decreased salivary flow. Therefore, the sense of taste is impaired and may create the sensation of consuming something with the taste of metal.  

Most dysgeusia symptoms that lead to metallic taste originate from the olfactory sensory organ (responsible for smell). The olfactory and gustatory organs are directly correlated via chemosensation, which are specialized pathways that connect the two organs. The olfactory sense organ can contribute to taste dysfunction and even metallic taste that is associated with chronic sinusitis, allergies, and upper respiratory infections. 

It is important that those suffering from continuous altered or impaired taste receive a definitive diagnosis from their physician in order to find the underlying cause. Chronic dysgeusia may be a sign and symptom of a neurological disease of the central nervous systemSince the gustatory nucleus stems from the central nervous system, altered/metallic taste may be a neurological symptom. 

Oral Health Tips for Those Suffering with Dysgeusia

Dysgeusia leaves many people with oral discomfort and an unpleasant metallic taste. Here are some ways to eliminate that taste: 

  • Dry mouth rinses and sprays; salivary substitute sprays may aid in reducing dysgeusia significantly and increase tastants. 
  • Utilize an oral rinse prior to eating, this may decrease metallic taste and stabilize pH levels in the oral cavityMetaQil contains essential oils that are scientifically proven to comfort taste disorders.  
  • Maintain proper oral hygiene by brushing, flossing, and using a tongue scraper daily. This will significantly reduce plaque accumulation and decrease risk for oral health diseases. 

Working on your metallic taste symptoms can prove beneficial for your overall systemic health. It is crucial to understand the underlying causes of your dysgeusia and reach a point where you can say goodbye to metallic taste!

MetaQil®

Metallic Taste Oral Rinse

Restore Your
Sense of Taste
with MetaQil!

MetaQil Oral Rinse is first-of-its kind product that alleviates metallic taste in the mouth, providing long-lasting comfort and relief.

Interested in trying MetaQil?

Use Coupon Code 

MT30

at checkout
to get 30% OFF your order

CITED WORK:

Maheswaran, T., Abikshyeet, P., Sitra, G., Gokulanathan, S., Vaithiyanadane, V., & Jeelani, S. (2014). Gustatory dysfunction. Journal of Pharmacy and Bioallied Sciences, 6(5), 30. https://doi.org/10.4103/0975-7406.137257

PhysiologyWeb Team. (2013). Tastant – Definition – Glossary – PhysiologyWeb. Physiologyweb.com. https://www.physiologyweb.com/glossary/t/tastant.html 

MetaQil #1 Metallic Taste Oral Rinse

MetaQil is the #1 solution for symptomatic relief of metallic taste. MetaQil’s scientifically designed formula alleviates metallic taste caused by chemotherapy, GERD, and a variety of medications. MetaQil gently cools the mouth and provides instant, long-lasting relief from metallic taste symptoms. It has a mild flavor and does not “sting” the mouth like an every-day mouthwash. Regular use of MetaQil can help patients return to healthy eating and adequate nutrient intake.

85% of participants in a clinical study preferred MetaQil as a remedy for metallic taste

How to use MetaQil?

For best results, use approximately 5 ml (one teaspoon) of MetaQil®, rinse for 30 seconds, and spit out. MetaQil can be used on an as-needed basis. Use alone or after each time you brush your teeth

Important: If you are pregnant or breastfeeding, please consult your physician before using MetaQil. Do not use MetaQil if you are taking any medications that are contraindicated with the product. Please consult with your physician if you have any concerns regarding the use of this product. Keep out of reach of children.

For more information about MetaQil, click here.

MetaQil #1 Metallic Taste Oral Rinse

MetaQil is the #1 solution for symptomatic relief of metallic taste. MetaQil’s scientifically designed formula alleviates metallic taste caused by chemotherapy, GERD, and a variety of medications. MetaQil gently cools the mouth and provides instant, long-lasting relief from metallic taste symptoms. It has a mild flavor and does not “sting” the mouth like an every-day mouthwash. Regular use of MetaQil can help patients return to healthy eating and adequate nutrient intake.

85% of participants in a clinical study preferred MetaQil as a remedy for metallic taste

How to use MetaQil?

For best results, use approximately 5 ml (one teaspoon) of MetaQil®, rinse for 30 seconds, and spit out. MetaQil can be used on an as-needed basis. Use alone or after each time you brush your teeth

Important: If you are pregnant or breastfeeding, please consult your physician before using MetaQil. Do not use MetaQil if you are taking any medications that are contraindicated with the product. Please consult with your physician if you have any concerns regarding the use of this product. Keep out of reach of children.

For more information about MetaQil, click here.

What do customers say about MetaQil Metallic Taste Oral Rinse?

What do customers say about MetaQil Metallic Taste Oral Rinse?

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