evidence: This is also the case with aluminium, which can be neurotoxic in high doses. It is one of the ingredients contained in the 6-in-1 vaccine which is recommended by the NHS for babies at 8, 12 and 16-weeks-old. It provides protection against diphtheria, hepatitis B, polio, hib (Haemophilus influenzae type b), tetanus and whooping cough. [...] It is also possible the post may be referring to injections of Vitamin K, which are offered to all newborns to prevent a rare bleeding disorder that can occur due to low levels of the vitamin at birth. However, these injections contain only the vitamin and a small amount of alcohol as a preservative, which is not enough to be dangerous. Vitamin K has not been linked to neurotoxicity and studies suggest it may have a protective effect on brain cells.