1. Lindschinger M, Tatzber F, Schimetta W, Schmid I, Lindschinger B, et al. A Randomized Pilot Trial to Evaluate the Bioavailability of Natural versus Synthetic Vitamin B Complexes in Healthy Humans and Their Effects on Homocysteine, Oxidative Stress, and Antioxidant Levels. Oxidative Medicine and Cellular Longevity. 2019;2019. Article ID 6082613
2. Kennedy DO. B vitamins and the brain: mechanisms, dose and efficacy—a review. Nutrients. 2016 Feb;8(2):68.
3. Republik Indonesia. 2019. Peraturan Menteri Kesehatan Nomor 28 Tahun 2019 tentang Angka Kecukupan Gizi yang Dianjurkan untuk Masyarakat Indonesia. Menteri Kesehatan RI. Jakarta.
4. Wiley KD, Gupta M. Vitamin B1 Thiamine Deficiency (Beriberi) [Updated 2019 Dec 29]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2020 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK537204/
5. Meyer-Ficca M, Kirkland JB. Niacin. Adv Nutr. 2016 May 16;7(3):556-8. doi: 10.3945/an.115.011239. PMID: 27184282; PMCID: PMC4863271.
6. Wolffenbuttel BH, Wouters HJ, Heiner-Fokkema MR, van der Klauw MM. The many faces of cobalamin (vitamin B12) deficiency. Mayo Clinic Proceedings: Innovations, Quality & Outcomes. 2019 Jun 1;3(2):200-14.
7. Leach JM. Should GPs prescribe vitamin B compound strong tablets to alcoholics?. Br J Gen Pract. 2017 Mar 1;67(656):134-5.
8. Zhou SS, Zhou Y. Excess vitamin intake: An unrecognized risk factor for obesity. World journal of diabetes. 2014 Feb 15;5(1):1.
9. Meyer HE, Willett WC, Fung TT, Holvik K, Feskanich D. Association of high intakes of vitamins B6 and B12 from food and supplements with risk of hip fracture among postmenopausal women in the Nurses’ Health Study. JAMA network open. 2019 May 3;2(5):e193591-.
10. Lonsdale D. Thiamin. Adv Food Nutr Res. 2018;83:1–56.
11. Jennifer C Kerns, Jean L Gutierrez, Thiamin, Advances in Nutrition, Volume 8, Issue 2, March 2017, Pages 395–397, https://doi.org/10.3945/an.116.013979
12. Pinto JT, Zempleni J. Riboflavin. Adv Nutr. 2016 Sep 15;7(5):973-5. doi: 10.3945/an.116.012716. PMID: 27633112; PMCID: PMC5015041.
13. Minto C, Vecchio MG, Lamprecht M, et al. Definition of a tolerable upper intake level of niacin: a systematic review and meta-analysis of the dose-dependent effects of nicotinamide and nicotinic acid supplementation. Nutrition reviews. 2017 Jun 1;75(6):471-90.
14. European Food Safety Authority (EFSA). Scientific Opinion on the safety and efficacy of pantothenic acid (calcium D-pantothenate and D-panthenol) as a feed additive for all animal species based on a dossier submitted by VITAC EEIG. EFSA J. 2011;9(11).
15. Vrolijk MF, Opperhuizen A, Jansen EHJM, et al. The vitamin B6 paradox: Supplementation with high concentrations of pyridoxine leads to decreased vitamin B6 function. Toxicol Vitr. 2017;44:206–12.
16. Bacharach R, Lowden M, Ahmed A. Pyridoxine Toxicity Small Fiber Neuropathy with Dysautonomia: A Case Report. J Clin Neuromuscul Dis. 2017;19(1):43–6.
17. 1. Pastén-Hidalgo K, Riverón-Negrete L, Sicilia-Argumedo G, Canul-Medina G, Salazar-Anzures T, Tapia-Rodríguez M, et al. Dietary Biotin Supplementation Impairs Testis Morphology and Sperm Quality. J Med Food. 2019;
18. Rosner I, Rogers E, Maddrey A, Goldberg DM. Clinically Significant Lab Errors due to Vitamin B7 (Biotin) Supplementation: A Case Report Following a Recent FDA Warning. Cureus. 2019 Aug;11(8).
19. Patel KR, Sobczyńska-Malefora A. The adverse effects of an excessive folic acid intake. European journal of clinical nutrition. 2017 Feb;71(2):159-63.
20. Morales-Gutierrez J, Díaz-Cortés S, Montoya-Giraldo MA, Zuluaga AF. Toxicity induced by multiple high doses of vitamin B12 during pernicious anemia treatment: a case report. Clinical Toxicology. 2020 Feb 1;58(2):129-31.