Great for: supporting energy production & metabolism, psychological function, red blood cell production

Super B12-Complex has been expertly formulated to effectively raise cellular levels of this essential nutrient. The superior sublingual format delivers vitamin B12 directly to the bloodstream, bypassing absorption challenges in the gut. Different forms of B12 are required in different areas of the body, so we provide three naturally occurring and bioactive forms - methylcobalamin, adenosylcobalamin and hydroxocobalamin - for greater health coverage.

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We provide three naturally occurring and bioactive forms of B12 - methylcobalamin, adenosylcobalamin & hydroxocobalamin. No synthetic cyanocobalamin


Sublingual delivery boosts absorption by delivering vitamin B12 directly into the bloodstream via passive diffusion under the tongue, bypassing absorption challenges in the gut to achieve higher B12 levels


An effective 1000mcg dose is ideal for supporting energy levels & metabolism, the central nervous system & mood, and red blood cell production


No sugar, artificial sweeteners, colours or flavours. A pleasant taste from natural sweeteners mannitol and stevia, the small one-a-day tablets dissolve comfortably under the tongue


Suitable for supplementing a plant-based diet which may be low in vitamin B12

Consistent product quality guaranteed

GMP manufactured in UK - quality standards that medicines manufacturers must meet in their production processes to ensure products are of consistent high quality

  • Description
  • Indications
  • Contents
  • Directions
  • Warnings
  • Nutrition
  • Allergen information
  • Product guide

Super B12-Complex has been expertly formulated to enhance delivery of vitamin B12, by combining three bioactive forms for superior absorption. B12 uptake via the gut can be compromised. Sublingual delivery bypasses the gut and fast-tracks B12 directly into the bloodstream to raise levels effectively.

Vitamin B12

  • contributes to the normal metabolism of iron
  • contributes to the maintenance of normal red blood cells 
  • contributes to normal vision
  • contributes to the reduction of tiredness and fatigue
  • contributes to normal energy-yielding metabolism
  • contributes to normal blood cell formation and to normal homocysteine synthesis
  • contributes to the normal function of the immune system
  • contributes to the normal process of cell division
  • contributes to the normal functioning of the nervous system
  • contributes to normal psychological function

Each bottle contains 180 sublingual tablets, providing a 6-months' supply.

Adults and children aged 12+: 1 tablet daily. Place under the tongue and allow to dissolve slowly. Do not chew. Do not exceed the stated dose.

This product should not be used as a substitute for a varied and balanced diet and healthy lifestyle. Seek professional medical advice before taking any food supplement if you are pregnant, breastfeeding or taking medication. Keep out of the reach of children. Store in a cool, dry place and away from sunlight.

Ingredients: Sugar-free sweeteners: mannitol, steviol glycosides from stevia leaf; bulking agent: hydroxypropyl cellulose; anti-caking agent: ascorbyl palmitate; natural strawberry flavour; natural colour (beetroot); hydroxocobalamin; methylcobalamin; adenosylcobalamin.

vitamin b12 sublingual high absorption with methycobalamin adenosylcobalamin and hydroxocobalamin

This product is not made with any ingredients containing gluten, wheat, dairy, soya, eggs, fish, shellfish, tree nuts or peanuts. Our manufacturing facilities have strict allergen management procedures in place, however we cannot guarantee that our products are made in allergen-free facilities without the very small risk of trace amounts of cross contamination.

No sugar, artificial colours, flavours or sweeteners; not tested on animals; non-GMO; suitable for vegetarians & vegans; compatible with halal & kosher diets.

We often get asked many questions about our products, so our nutritionists have compiled this downloadable product information guide to ensure you get the most from taking Super B12-Complex. Find out when to take it, at what dose and how to maximise absorption for optimum results.

sublingual vitamin b12

Sublingual delivery for high absorption

Standard absorption of vitamin B12 via the gut relies on several factors that can easily be compromised, and is limited to small quantities of B12 at any one time. Absorption is usually reliant on adequate stomach acid to detach B12 from proteins in the diet, and the presence of intrinsic factor (IF) - a binding protein which supports absorption in the intestines. Levels of stomach acid and IF are often reduced by medication, genetic variations, digestive disorders and ageing, leading to reduced B12 uptake. Sublingual format bypasses the digestive system, delivering B12 directly to the bloodstream without the reliance on absorption in the gut.

With a natural strawberry flavour, Super B12-Complex is pleasant and easy to use. The small tablets have a smooth texture, sitting comfortably under the tongue. This formula is free from sugar and artificial sweeteners, colours and flavours.

vitamin b12 supplement with methylcobalamin adenosylcobalamin and hydroxocobalamin

Superior bioactivity from three B12 forms 

Standard B12 supplements deliver a single form, often synthetic cyanocobalamin, but methylco-balamin provides superior bioavailability and retention in comparison. Different forms of B12 are also required for different functions in the body so we combine three naturally occurring and bio-active forms - methylcobalamin, adenosylcobalamin and hydroxocobalamin - for greater health coverage. Those with genetic variations may also benefit from taking multiple forms to raise B12 status more efficiently. 

1000mcg vitamin b12

Optimal dosing works in harmony with the body

Absorption in the gut relies on several factors that can easily be compromised, and is limited to small quantities of B12 at any one time. Instead of improving absorption via the digestive system with slow-release technology and split-dosing, sublingual delivery bypasses this route altogether, allowing for superior uptake via passive diffusion directly into the bloodstream. As such, each small tablet delivers an effective 1000mcg B12 in a convenient 1-a-day dose, ideal for boosting levels without oversaturating the body.
vitamin b12 supports energy production

Energy production

Adenosylcobalamin is an active form of B12 found in cellular tissues and retained in mitochondria - the powerhouse of cells - where it supports cellular energy production. Adenosylcobalamin also account for ~60-70% of total B12 stored in the liver. With co-factor activity, this form also supports brain development, growth and muscle development. Similar to methylcobalamin, ade-nosylcobalamin has superior bioavailability with the advantage of delivering B12 more efficiently to cells.

vitamin b12 for mood health

Mood & central nervous system

Active predominantly in cell plasma, methylcobalamin is required to convert folic acid to its active form. Providing superior bioavailability, methylcobalamin is also a cofactor for homocysteine recycling, essential for neurotransmitter function, affecting brain function and mood balance. With an important role in detoxification, methylcobalamin also supports the formation of S-adenosylmethionine (SAMe), a universal methyl donor for almost 100 different substrates, including DNA, RNA, hormones, proteins, and lipids. 

supplement vitamin b12 for anaemia and blood health

Red blood cell production

Hydroxocobalamin is active in both cell plasma and blood. Particurlarly beneficial for smokers, hydroxocobalamin acts as a scavenger for detoxification by-products, including cyanide mole-cules and nitric oxide (NO) radicals.

Customer Reviews

Based on 22 reviews
stuart Mayall
A better B12 supplement!

I have Low B vitamins in my blood probably due to digestion issues & acid reflux medication. These are easy to take, seem to have no side effects or nasty ingredients, they bypass the need for digestion to be absorbed and seem to have helped with some of my medical issues - Tiredness, mouth ulcers, muscle weakness.

Aimee Larson
Superb b12

This b12 contained 3 active forms and is one of the best b12 I have used for my deficiency.

Tamara Pizarro Fernandez
Very Happy Customer

I have taken these for a while after feeling that my energy levels were so low that I could hardly get out of bed in the mornings, the size and flavour makes it easy to keep under my tongue often after my lunch and I have noted a huge difference in how I feel in myself and my energy levels.


It took over 15 minutes to dissolve under my tongue!!

Sarah Ward

Started taking this supplement in September as it was recommended by my doctor after a blood test revealed catastrophically low B12 levels. 4 months in I've noticed a difference in my energy and mood, and a reduction in the awful mood swings and lethargy I was suffering from. For convenience I would probably have preferred a tablet I can take with water rather than one that dissolves in my mouth but that said the tablets are tiny and the strawberry taste is not unpleasant. A good value quality supplement as I have come to expect from Igennus.

Be kind to your health

“We are living in a rapidly changing world that challenges us in new and unexpected ways. We believe evidence-based nutrition has an important role to play in helping us to protect and boost our wellbeing. At Igennus we empower people who are committed to investing in their health with high impact nutrition to lead a healthier and fuller life. Our supplements are expertly formulated by our in-house nutrition scientists to achieve superior bioavailability for maximum impact on your health."

Dr Jav Nazemi

CEO & Co-Founder