Title :

Scientific opinion on the tolerable upper intake level for vitamin B6.

Author(s) :

Turck, Dominique [Auteur]
Institut de Recherche Translationnelle sur l'Inflammation (INFINITE) - U1286
Bohn, T. [Auteur]
Castenmiller, J. [Auteur]
De Henauw, S. [Auteur]
Hirsch-Ernst, K. I. [Auteur]
Knutsen, H. K. [Auteur]
Maciuk, A. [Auteur]
Mangelsdorf, I. [Auteur]
Mcardle, H. J. [Auteur]
Pelaez, C. [Auteur]
Pentieva, K. [Auteur]
Siani, A. [Auteur]
Thies, F. [Auteur]
Tsabouri, S. [Auteur]
Vinceti, M. [Auteur]
Fairweather-Tait, S. [Auteur]
Vrolijk, M. [Auteur]
Fabiani, L. [Auteur]
Titz, A. [Auteur]
Naska, A. [Auteur]

Journal title :

EFSA Journal

Abbreviated title :

EFSA J

Volume number :

21

Pages :

e08006

Publication date :

2023-05-26

ISSN :

1831-4732

English keyword(s) :

tolerable upper intake level
UL
vitamin B6
pyridoxine
pyridoxal
pyridoxamine
dietary reference value

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver a scientific opinion on the tolerable upper intake level (UL) for vitamin B6. Systematic ...
Show more >Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver a scientific opinion on the tolerable upper intake level (UL) for vitamin B6. Systematic reviews of the literature were conducted by a contractor. The relationship between excess vitamin B6 intakes and the development of peripheral neuropathy is well established and is the critical effect on which the UL is based. A lowest-observed-effect-level (LOAEL) could not be established based on human data. A reference point (RP) of 50 mg/day is identified by the Panel from a case–control study, supported by data from case reports and vigilance data. An uncertainty factor (UF) of 4 is applied to the RP to account for the inverse relationship between dose and time to onset of symptoms and the limited data available. The latter covers uncertainties as to the level of intake that would represent a LOAEL. This leads to a UL of 12.5 mg/day. From a subchronic study in Beagle dogs, a LOAEL of 50 mg/kg body weight (bw) per day can be identified. Using an UF of 300, and a default bw of 70 kg, a UL of 11.7 mg/day can be calculated. From the midpoint of the range of these two ULs and rounding down, a UL of 12 mg/day is established by the Panel for vitamin B6 for adults (including pregnant and lactating women). ULs for infants and children are derived from the UL for adults using allometric scaling: 2.2–2.5 mg/day (4–11 months), 3.2–4.5 mg/day (1–6 years), 6.1–10.7 mg/day (7–17 years). Based on available intake data, EU populations are unlikely to exceed ULs, except for regular users of food supplements containing high doses of vitamin B6.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
Inserm
CHU Lille

Collections :

• Institut de Recherche Translationnelle sur l'Inflammation (INFINITE) - U1286

Submission date :

2024-01-11T22:39:23Z
2024-03-27T13:07:29Z