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PLoS ONE 11 , e0156729 (2016)

J Ovarian Res 18 , 78 (2025)

doi: 10.1158/1535-7163.MCT-10-0309 194 WeiHPuCZengMLuRWeiYHuangYet al

B12 injections can be more effective than pills in patients who have trouble absorbing vitamin B12, says Foxx

Any deficiency in these essential nutrients can affect melanin synthesis, leading to changes in hair colour

Moreover, respiratory depression may feature, along with gastrointestinal disturbances such as nausea, vomiting, hyperphagia, dry mouth, and thirst (Richards et al., 2017