The findings, available at UMDs research portal, were blunt: No significant change in erectile function scores (IIEF-5)
Rarely reported symptoms associated with excessive B12 intake may include: Skin reactions : Acne-like eruptions or rosacea-type dermatitis have been occasionally reported, particularly with high-dose intramuscular injections Gastrointestinal disturbance : Mild nausea, diarrhoea, or abdominal discomfort, though these are uncommon Headache : Infrequent reports of headaches following parenteral B12 administration Hypersensitivity reactions : In very rare cases, allergic reactions to injectable B12 preparations have been documented It is crucial to note that there is no established link between standard B12 supplementation and serious adverse effects
Am J Clin Nutr 2000
Some people can also experience more severe reactions, such as anaphylaxis and Steven-Johnson syndrome
It goes without saying that it takes more time and effort to mend weakened, broken skin than it does to fortify skin when its still fairly healthy
Kanika Sandal (R&D Engineer I, NINS laboratory) for her help in arranging the copyright permission from various publishers