2 The British Society for Haematology recommends intramuscular vitamin B 12 for severe deficiency and malabsorption syndromes, whereas oral replacement may be considered for patients with asymptomatic, mild disease with no absorption or compliance concerns
A broad spectrum of pharmaceutical contaminants including analgesics, antibiotics, beta blockers, xenobiotics, and veterinary drugs has been detected across diverse environmental matrices such as surface water, groundwater, wastewater, and agricultural runoff [13, 77, 107]
This is a big risk because it can make life harder for you
J Nanosci Nanotechnol 11:75217536 Resch-Genger U, Grabolle M, Cavaliere-Jaricot S, Nitschke R, Nann T (2008) Quantum dots versus organic dyes as fluorescent labels