Seeking Health Active B12 with L-5-MTHF Lozenges, 60 ct

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Seeking Health Active B12 Lozenge with L-5-MTHF combines potent levels of the active forms of B12 and Folate in a convenient sublingual tablet. 

These B-vitamins work together to support brain and nervous system function. 

They can also help protect the brain from toxins by maintaining the normal metabolism of homocycsteine, a potentially toxic amino acid metabolite that can damage the arteries. 

Previously known as Sublingual Acitve B12 with Metafolin.  60 lozenges

Product Details

Seeking Health Active B12 with L-F-MTHF, 60 Lozenges

Seeking Health Active B12 Lozenge with L-5-MTHF combines high-potency amounts of the active forms of vitamin B12 and Folate in one convenient tablet. 

Benefits of Active B12 Lozenges with L-5-MTHF

Vitamin B12 as methylcobalamin:

Vitamin B12 is important to the formation of healthy red blood cells, energy production, nervous system support, cognitive function, and homocysteine regulation. Although cyanocobalamin is the most commonly used form of vitamin B12 in dietary supplements, it must be converted by enzymes into an active coenzyme form to be useful. Nutritional inadequacies, enzyme defects, and tissue abnormalities can reduce the body’s ability to synthesize the active forms of B12.

In contrast, vitamin B12 as methylcobalamin is a “body-ready” form with metabolic benefits that may not be provided by other forms of vitamin B12. It appears that methylcobalamin may be particularly useful for individuals with impaired methylation capacity, including those with elevated homocysteine or neurological impairments.

Active form of folate:

This B-vitamin is important for generating red blood cells, regulating homocysteine metabolism, assisting DNA repair, and supporting neurological processes. Quatrefolic (6S) -5-metylfolate, an active form of folate, is included in this formula to help ensure more immediate effects on metabolism compared to folic acid, the form of folate commonly used in fortified foods and supplements.

Active B12 Lozenges with L-5-MTHF sublingual tablets are sweetened naturally with xylitol and are free of added flavorings. The tablets dissolve in the mouth within a few minutes or may also be swallowed whole if desired. However, this supplement may be better absorbed when slowly dissolved under the tongue rather than swallowed whole.

Newly reformulated! Now with Quatrefolic® Folate. 

Absorption of vitamin B12 is facilitated by intrinsic factor, a natural protein produced by the parietal cells of the stomach lining. B12 can also be absorbed by an alternate mechanism that does not rely on intrinsic factor when high-potency amounts of 1,000 mcg or more are taken. Active B12 Lozenges with L-5-MTHF by Seeking Health provides 1,000 mcg of vitamin B12 so that individuals without adequate intrinsic factor can enhance their intake of this essential B vitamin through oral supplementation.

Individuals who have an increased risk for vitamin B12/folate deficiency are the elderly, vegetarians, and individuals with ulcers, Crohn’s disease, bacterial overgrowth, and other gastrointestinal disorders. This dietary supplement may be useful for individuals who may have difficulty absorbing vitamin B12 and folate and are looking for a safe and efficient method to enhance their supply of these bioactive forms of nutrients.

Dietary B12 can be reliably obtained only from animal products and is a singularly difficult vitamin to absorb. Active B12 Lozenges with L-5-MTHF by Seeking Health are contained in fast-dissolving, sublingual tablets allowing quick release into the bloodstream.

Suggested Use: Take one (1) lozenge daily with food

60 lozenges

About Seeking Health, the company

Dr. Ben Lynch, founder and Chief Medical Officer of Seeking Health, is a naturopathic physician. While majoring in Cell and Molecular biology at the University of Washington, Dr. Ben took a trip through the South Pacific and Southeast Asia that changed his outlook on traditional medicine, and his life.

During this trip, Dr. Ben hiked through the forests, mountains and coasts of Tasmania, worked a cattle ranch in the Outback of Australia, and volunteered with Mother Theresa in Calcutta. He lived in Fiji with a family having no electricity or plumbing, experienced the Himalayan Mountains of Northern India, worked a fruit orchard in New Zealand, and returned to America with an impression of a different form of medicine than he had ever experienced with his mainstream medical education.

This profound experience led Dr. Ben to Bastyr University, and he studied the Mind-Body Connection, Environmental Medicine, Functional Medicine, and Epigenetics.

Dr. Ben saw the huge need for people to obtain foundational nutrients, and Seeking Health was born. Without foundational nutrients, biochemical dysfunction occurs and causes symptoms. Doctor after doctor and person after person do not understand the absolute requirement for our bodies to have the tools to maintain function.

  • Without water, we die.
  • Without food, we die.
  • Without probiotics, we get digestive disorders.
  • Without multivitamins, we become depressed, fatigued and sick.

“If one supports their bodily systems, especially their digestion and mental health, with pure, highly absorbable, well-formulated nutrients, the ability to remain healthy and vital significantly increases. We want your foundation rock solid and we provide the tools to do so.”

-Dr. Ben Lynch, founder of Seeking Health

Seeking Health believes that the root cause for many health conditions and supplements stem from ineffective digestion, environmental exposures, poor diet, and lack of a healthy social outlet and inlet.

  • Once digestion is restored and optimized with the best probiotics, digestive enzymes, stomach acid and intestinal repair nutrients, one is able to absorb nutrients from foods and high quality multivitamins.
  • Once environmental exposures are reduced, one is able to reduce toxic burden which then frees up nutrients to work in promoting health and preventing disease.
  • Once diet is optimized, nutrients flood in, energy increases, blood sugar stabilizes and the immune system balances.
  • Creating a social outlet and inlet allows the parasympathetic nervous system to regain control over the reactive sympathetic nervous system, allowing countless nutrients to be used proactively and in a protective manner instead of being wasted on producing stress hormones.

Seeking Health is here to see you get better, and stay better. Their true passion is prevention.

Seeking Health is based in Bellingham, Washington and operated and managed by a team dedicated to bringing you better health through the best quality supplements, prebiotics, probiotics, and multivitamins.

Seeking Health brings you effective formulas produced without preservatives, colors, titanium dioxide, coloring, or gluten.

Label Information


Other Ingredients
Xylitol, silica, natural cherry flavor, ascorbyl palmitate
Suggested use
Take 1 lozenge daily
Do not use if full-bottle shrink wrap is broken or missing. Store in a cool, dry place (59-85 degrees) away from direct sunlight. Keep out of reach of children.
Package size
Serving size
1 lozenge
Serving Type
Servings per package
Egg Free, Fish Free, Raw
Refrigeration Recommended
Use Ice Pack
Seeking Health
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