B-12 Extreme™ - 35 mg, 30 Lozenges by ProHealth

The Most Potent Vitamin B-12 on Earth

  • For mental acuity, energy, liver support, and detoxification
  • Provides all four forms of B-12
  • Includes the only two biologically active forms of B-12


View Certificate of Analysis »

ProHealth's founder, Rich Carson, set out to develop the most potent B-12 supplement on the market - and that he did! B-12 Extreme contains the world's most potent single dose of all four forms of B-12 on the market, including the only two biologically active forms in humans - methylcobalamin and dibencozide. Low blood levels of vitamin B-12 are frequently associated with fatigue and malaise. Hydroxocobalamin and methylcobalamin have also recently gained attention from leading CFS and FM researchers and doctors.

MENTAL ACUITY - Methylcobalamin 12,500 mcg
Methylcobalamin, perhaps the most important and potent of the essential cobalamins, plays a vital part in cell growth. Particularly important for your central nervous system, it helps promote healthy homocysteine levels and helps increase the brain's focus and clarity, and the spinal cord's function.

ENERGY - Dibencozide 12,500 mcg
Dibencozide- also known as Adensylcobalamin- metabolizes essential fatty acids to produce more energy. As a biologically active form of B-12, this B-12 lozenge reacts with cells to provide muscles and nerves with bursts of energy.

LIVER SUPPORT - Cyanocobalamin 7,500 mcg
Cyanocobalamin, the most common of the cobalamins, becomes active in your liver, creating enzymes to help the body with blood formation, cell reproduction, iron utilization, and tissue synthesis, while aiding the digestion and absorption of foods.

DETOXIFICATION - Hydroxocobalamin 2,500 mcg
Hydroxocobalamin, one of the three essential cobalamins that make up the vitamin B-12 complex, helps support overall detoxification. Contained in ProHealth's sublingual B12 supplement, it also assists with methylation and energy production. 

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Label Information

Supplement Facts
Serving Size: 1 lozenge
Servings Per Container: 30
Amount Per Serving %DV
Vitamin B-12 35,000 mcg 583,333%
Methylcobalamin 12,500 mcg 208,333%
Dibencozide 12,500 mcg 208,333%
Cyanocobalamin 7,500 mcg 12,500%
Hydroxocobalamin 2,500 mcg 41,667%
* Percent Daily Values are based on a 2000 calorie diet
Note: Do not use if blister seal is broken. Natural color variation may occur.
  • Suggested Use: For intensive usage, take 1 lozenge daily; for maintenance take 1 lozenge weekly; or as advised by your healthcare professional. Allow lozenge to fully dissolve under your tongue.
  • Contraindications: Do not take while pregnant or breastfeeding without consulting with your doctor.
  • Other Ingredients: Sorbitol, natural strawberry flavor, natural color, magnesium stearate, silicon dioxide.
  • Contains No: Salicylates, wheat, gluten, eggs, soy, casein, caffeine, yeast, dairy, preservatives or artificial flavors.
  • Initial Source: Synthetic


Customer Reviews

Based on 66 reviews
Debra L.
Excellent Product

B12 Extreme has been the best supplement.


I was taking this daily until my recent blood work. My B levels were so high, Doc recommend I take this every other week. This is the first time my B levels have ever been even close to where they should be. My fiancé is ow taking this supplement and his doc is thrilled with his book work! Highly recommended!

Happy c.
Quick energy

Energizes my mornings quickly.

David D.
Excellent product

I have been using B12 Extreme for some time due to certain health conditions. Since using this product my B12 test results have gone through the roof. Highly recommend

Peter J.

B-12 Extreme™

Anna M.
Reliable product, easy to take.

I’ve been using this product for several years. It’s easy to take and reliable service.

Don N.
Big thing in a small package

We have been taking B-12 Extreme for several years. While we took it daily for several years, blood tests revealed such dosing was overkill so we reduced to one SL tablet every three days and subsequent follow up testing has shown our B levels to still be on the high end of normal. We recommend these to anyone.

Sheryl S.
B-12 Extreme

I love taking this supplement for my B-12 as I have tried others and this product is superior (I have even tried patches) - I highly recommend it!!!

Rafael S.
Great shipping!

Great shipping!

Sheryl S.
B-12 Extreme

I find this product important in my daily supplement regime - I like these lozenges for 2 reasons - they are not liquid and thus convenient to travel with, and I believe I absorb the needed B-12 more completely under my tongue.