Informational nutrient overview
Histamin Plus
Three separate B vitamins associated with overmethylation and reduced histamine — a hallmark of the histapenia biotype. This page explains the role they play in the body; any actual supplementation and dosage is determined only by a test and a consultation.
Read more: Methylation Explained Simply — What It Is and Why It Drives Your Mental State
- Niacin (B3) — as nicotinamide, without the "flush" effect
- Folate — natural L-5-MTHF
- B12 — bioactive form (methyl-, adenosyl-, hydroxocobalamin)
What to know about these vitamins
Niacin as nicotinamide
A form of niacin without the typical "flush" effect (skin flushing and tingling) — part of the NAD and NADP coenzymes involved in more than 450 reactions in the body.
Folate as L-methylfolate
The natural, directly usable form of folate (L-5-MTHF) — unlike synthetic folic acid, it requires no conversion in the body.
B12 in three active forms
Methylcobalamin, adenosylcobalamin and hydroxocobalamin — three bioactive forms of vitamin B12 in a single capsule.
Linked to histapenia
Histapenia (biotype 3, overmethylation) is associated with low histamine and a relative shortage of folate and B12.
The exact opposite of histadelia
In the opposite biotype (histadelia), folate is usually not recommended — here the situation is exactly reversed.
EFSA health claims
Niacin, folate and B12 contribute to normal energy metabolism, normal psychological function and the reduction of tiredness and fatigue (EFSA-approved claims).
Read more
How niacin, folate and B12 work in the body
Four mechanisms linked to overmethylation and reduced histamine in histapenia.
Niacin (B3) and methylation Read more
Niacin (vitamin B3) is involved in forming the NAD and NADP coenzymes, essential for more than 450 enzymatic reactions including energy metabolism. In this combination it is used as nicotinamide, a form that — unlike nicotinic acid — does not cause the typical skin flush.
In histapenia (biotype 3, overmethylation), niacin is mentioned in connection with its role in methyl-group metabolism — the body here has a relative excess of them.
Folate as L-5-MTHF Read more
Folate is essential for cell division, blood formation and homocysteine metabolism. This combination contains folate as L-5-methyltetrahydrofolate (L-5-MTHF) — the natural form the body can use directly, without needing the enzymatic conversion required for synthetic folic acid.
In histapenia, blood histamine is low and folate is relatively deficient — the exact opposite of the situation in histadelia (biotype 2), where folate is usually not recommended.
B12 in a bioactive form Read more
Vitamin B12 contributes to normal energy metabolism, red blood cell formation, the nervous system and reduces tiredness and fatigue. This combination contains three bioactive forms of B12 — methylcobalamin, adenosylcobalamin and hydroxocobalamin — which the body can use directly, without needing conversion from synthetic cyanocobalamin.
B12 is closely linked to folate and homocysteine metabolism, which is why it is usually supplemented together with it in histapenia.
Why histadelia calls for the opposite approach Read more
In histadelia (biotype 2, undermethylation) the situation is exactly reversed — the body has an excess of methyl groups and elevated histamine. Folate would deepen that methylation further, so it is usually left out for this biotype, and nutrients such as calcium and L-methionine are mentioned instead.
This is exactly why it matters to know your biotype before any supplementation — these two combinations are designed for opposite conditions.
Frequently asked questions about niacin, folate and B12
Who are niacin, folate and B12 relevant for?
These are three nutrients associated with overmethylation and reduced histamine — typically in the histapenia biotype. Whether and to what extent supplementing them is relevant for you is determined by a histamine test result and a consultation.
Why is the folate in the form of L-5-MTHF rather than folic acid?
L-5-MTHF is the natural, directly usable form of folate that requires no enzymatic conversion in the body — unlike synthetic folic acid. For some people it is therefore better suited.
How do I know if I have histapenia and not histadelia?
A whole-blood histamine test distinguishes the two precisely — a value below 28 µg/ml points to histapenia, above 51 µg/ml to histadelia. We recommend taking the test before your consultation, since these are opposite conditions requiring opposite support.
Are niacin, folate and B12 medicines?
No, these are ordinary B vitamins, not medicines. The information on this page does not replace treatment or professional advice — consult a doctor or pharmacist before supplementing, especially if you take medication, are pregnant, or are breastfeeding.
Related test and biotype
Niacin, folate and B12 are most relevant for Histapenia (biotype 3, low histamine). If you don't yet have a confirmed biotype from testing, see the Histamine Test or the Histapenia — symptoms and path to resolution page.
Wondering whether these vitamins are relevant for you?
If you're not sure which of the two histamine biotypes you have, start with a test.