Discussion- Listed in Linda Clark's Know Your Nutrition. Otherwise, unknown. Yeast a possible source.
Vitamin Bc- See Folic Acid
Vitamin Bh- See Inositol
Vitamin Bp- See Choline
Chemical Names- L-Carnitine
Optimal intake- 500 mg mg
Good Sources- Chicken, red meats, fish
Discussion- Carnitine is an amino acid and not essential as a protein or vitamin. It has been promoted as a treatment for heart disease.
Vitamin Bx- See PABA
Vitamin Bw- See Biotin
The factors that are thought to be possible B-vitamins, but have not yet
been proven to be essential in the diet are denoted with a letter subscript
instead of a number subscript. The letter is the factor letter (like "factor C")
of the substance. Presumeably, these would have been converted to number
subscripts after the vitamins are confirmed, but later researchers prefer to use the
chemical names of substances to avoid confusion.
Vitamin Bc denotes folic acid.
Vitamin Bh denotes inositol.
Vitamin Bp denotes choline.
Vitamin Bt denotes carnitine. (I saw one nutrition book that used "vitamin
Bt" as a poor abbreviation for "biotin".)
Vitamin Bw denotes biotin.
Vitamin Bx denotes para-aminobenzoic acid.
Vitamin B was discoverd to be a mixture of substances, and was later broken
down into all the B-complex vitamins.
Factor B denotes vitamin B12p, a specific form of vitamin B12,
Factor CF denotes folic acid.
Vitamin F refers to the Essential Fatty Acids, or EFAs. These are still
accepted as being required by the human body, but are no longer denoted as a
vitamin. The FDA outlawed this terminology when fast-food chains started claiming
"vitamin enriched foods" based on the fact that frying food in oil adds EFAs.
Vitamin G is an old term for riboflavin.
Factor GT denotes trivalent Chromium.
Vitamin H is an old term for biotin.
Vitamin H' (H-prime) is an old term for para-amino benzoic acid.
Vitamin H2 is an old term for para-aminobenzoic acid.
Vitamin H3 was once listed in the Merck Index for para-
aminobenzoyldiethylaminoethanol hudrochloride. This was based on the work
of a Rumanian scientist, Dr. Ana Aslan who used procaine preparations as a
youth drug. Her drug was very popular in the 60's, and research still goes on
today. Her preparations break down into para-aminobenzoic acid (B-complex factor)
and DEAE (related to choline precursors), and thus produced vitamin-like
properties. A few researchers postulated that there was a unique vitamin property to
the original substance as well. Her drug, called Gerovital-H3, thus became
listed in the Merck Index as "vitamin H3". This terminology has since been
dropped, and the hypothesis is rejected by most doctors in the United States.
Vitamin I is an old term for biotin. The term "vitamin I" was also used as
an old term for vitamin B7. The term "vitamin I" was proposed for an
undiscovered substance composed of vitamins A and E that was formed internally in the
body. This was based on observations that both vitamins have many similar
effects. Later, this theory was dropped. The similar effects noted for these and
other vitamins may have been the antioxidant activity, which is exhibited by many
substances. The term "vitamin I" was also used by a few researchers to
Vitamin J is an old term for choline. The term "vitamin J" was also used
by some researchers to denote vitamin C2, chatechol (flavin), a bioflavinoid.
Vitamin L1 is anthranilic acid or ortho-aminobenzoic acid, a vitamin
required for lactation in human females.
Vitamin L2 is adenyl thiomethylpentose, an alternate form of vitamin L.
Vitamin MK complex, consisting of vitamin MK1 through vitamin MK10, refer
to a specific set of vitamin K forms.
Vitamin N is thioctic acid or alpha-lipoic acid. It acts as an acetate
replacing factor and pyruvate oxidation factor in the human body. It is lipid
soluble, so is no longer conside. Its deficiency causes decreased ATP production
resulting in fatigue and decreased muscle strength. Used by weight lifters and body
builders. It is not clear if this is a required nutrient, or if the body can make
enough of its own.
Vitamin OHB12 refers to the vitamin B12 enzyme, which is form in which
vitamin B12 is utilized inside the body.
Vitamin P denotes the bioflavinoids. Vitamin P1 denots rutin. Vitamin P2
denotes hesperidin. Vitamin P4 denotes troxerutin.
Vitamin Q was a substance announced by a Dr. Quick, who reported that its
deficiency caused a lack of blood clotting. Although it was extracted from soy beans,
alfalfa and clover, like coenzyme Q10, it was not isolated to a specific
substance. It is not clear if the coenzyme Q10 complex is related.
Vitamin Q1 through vitamin Q7 denote coenzymes Q1 through Q7, respectively,
but cannot be used a precursors to coenzyme Q10 in humans.
Vitamin Q8 and vitamin Q9 denote coenzyme Q8 and coenzyme Q9, respectively,
and are precursors to coenzyme Q10.
Vitamin Q10 denotes coenzyme Q10.
Vitamin Q199 was an alternate term for coenzyme Q10.
Coenzyme R denotes biotin.
Vitamin R was an old term for vitamin B10.
Factor R denoted vitamin B10.
Vitamin S was an old term for vitamin B11.
Factor S denoted vitamin B11.
Vitamin T is Goetsch's vitamin in the form of mycoine or penicin.
Vitamin U was originally an old term for folic acid. The term was later
used for an ulcer-preventative factor discovered in cabbage, alfala, celery and
cereal grasses. That substancewas isolated down to methylmethioninesulfonium
Factor U refers to the original chick factor that was isolated to folic
Vitamin V is possibly nicotinamide adenine dinucleotide/NAD. Its
deficiency causes developmental problems in chicks. The term "vitamin V" was also
used by some researchers to denote para-aminobenzoic acid.
Vitamin W is being researched, but may turn out to be biotin, because it
has similar properties.
Vitamin X is a term that has been used for almost every undiscovered
vitamin until its true chemical nature was identified. Most noteably, it was
during the search for vitamin B12, the search for vitamin E, and the isolation of
Factor X is a term that has been used like vitamin X, to denote any
Vitamin Y is being researched, but may turn out to be vitamin B6, because
it has similar properties.
In Studies: Vitamin PP was an old term for niacin. also Vitamin PP - see Vitamin B3
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