UPDATED 05/10/2016

Carlson B-12 SL Review
Carlson B-12 SL Review

PUBLISHED: 11/15/2012 by BR Technical
Editor's Review: 3.5/5.0
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Carlson B-12 SL

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The core benefits for Carlson B-12 SL, although not specifically advertised as such by the manufacturer, include support for a healthy cognitive function and nervous system and energy production, enhancement of cardiovascular health, and improvement of red cells formation processes. The manufacturer Carlson Laboratories offers very little overall information on the formula, however various research results on Vitamin 12 are available.

The manufacturer is a U.S. company established in 1965 by the Carlson family. The company’s product portfolio includes a complete line of natural source vitamin E products, fish oils, amino-acids, enzymes, vitamins and minerals, and various condition-specific products. The company enjoys a vast experience in the dietary supplements industry and has been offered numerous awards for specific products or lines of products.

Carlson B-12 SL comes with a special sublingual delivery system, designed to promote a fast absorption of the nutrient, increased efficacy and easiness of administration. Carlson B-12 SL is a vegetarian formulation.

Carlson B-12 SL Ingredients

Carlson B-12 SL includes the following ingredients: Vitamin B-12 (as cyanocobalamin), Sorbitol, mannitol, silicon dioxide, magnesium stearate, natural lemon flavor, and citric acid.

Product Features

Vitamin B12 is a water-soluble vitamin, one of the eight included in the B complex. Its core benefits include support for energy production processes, promotion of emotional stability, mental clarity and nervous system health, and red cell formation support.

The sublingual delivery system has become increasingly popular with vitamin B12 because one of the causes of B12 deficiencies results from poor absorption from stomach and intestines. With an under-the-tongue delivery system B12 is absorbed directly into the blood stream and guaranteed superior efficacy.

The roles of Vitamin B12 greatly expand to the brain and the nervous system. Deficiencies can lead to potentially severe and irreversible damage, particularly at the level of the brain and nervous system. Symptoms such as poor memory, depression or extreme fatigue may be experienced. Mood disorders such as postpartum depression or dystimia are more likely to appear when a B12 imbalance is present. Apparently, lack of B12 can increase homocysteine levels in the blood, an amino acid associated to depression symptoms, stroke and Alzheimer’s disease.

B12, together with another B vitamin (the Folic Acid), help produce red blood cells, which are key to oxygen transportation processes. By continuously supplying red blood cells (which have a limited life span of 120 days), Vitamin B12 promotes optimum oxygenation of cells, and so a normal function of tissues and organs.

There are no consumer reviews available online for this formula. The recommended dose of Carlson B-12 SL is 1 tablet, placed under the tongue. The tablets may also be chewed. No side effects warnings are issued, however B12 may sometimes cause diarrhea, itching, allergic reactions, and other side effects.

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  • The sublingual delivery system increases efficacy and easiness of administration
  • Affordable product (approximately $18 for a 6 months’ supply)
  • The benefits of B12 have been heavily researched and are supported by clinical data
  • Vegetarian formula
  • Free of artificial preservatives and most common allergens


  • Lack of consumer reviews on the formula makes it difficult to assess its effectiveness
  • There are some potential side effects for Vitamin B12, although it is considered likely safe


Vitamin B12 is an essential B vitamin, without which essential bodily functions would go wrong. Supplementation is recommended in case you have a diet low in B12 (especially vegetarians) or in case the risk of mal-absorption is elevated (especially people over 50 years old). Supplementation with B12 should however not replace the need for medication or counseling, in case you are taking it to help you with particular ailments: depression, cognitive impairing ailments etc. It is always advised you talk to your doctor and decide together which the right treatment path is. There are no consumer reviews referencing Carlson B-12 SL, hence we cannot draw a clear conclusion regarding the formula’s effectiveness.

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Carlson B-12 SL ReviewBR Technical3.52016-05-10 12:09:31
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