> Megadosing it can harm sleep and severely increase blood pressure and heart rate https://www.researchgate.net/profile/Osama-Arafat/publication/234135338_METH

> Megadosing it can harm sleep and severely increase blood pressure and heart rate https://www.researchgate.net/profile/Osama-Arafat/publication/234135338_METHYLCOBALAMIN_HAS_AN_EFFECT_ON_HYPOTHALAMIC-HYPOPHYSEAL-ADRENAL_AXIS/links/00b7d535ff904b4c57000000/METHYLCOBALAMIN-HAS-AN-EFFECT-ON-HYPOTHALAMIC-HYPOPHYSEAL-ADRENAL-AXIS.pdf?origin=publication_detail https://www.researchgate.net/profile/Osama-Arafat/publicatio... > METHYLCOBALAMIN HAS AN EFFECT ON HYPOTHALAMIC–HYPOPHYSEAL– ADRENAL AXIS In rats, but may apply to humans too.