Drowsiness following the administration of lidocaine HCl is usually an early sign of a high blood level of the drug and may occur as a consequence of rapid absorption
B12 Shot Enhances Your Sleep Studies have connected B12 to melatonin synthesis
B-100 complex can interfere with other medicines including but not limited to: levodopa, medicines containing oestrogen, hydrazine, certain anti epileptic drugs, phenobaritone, phenytoin, immunosuppressants and some drugs used to treat infections such as isoniazid, pyrazinamide, cycloserne and penicillamine
While topical application has minimal systemic absorption, the precautionary principle suggests avoiding use during pregnancy unless a healthcare provider approves
Consider bolstering your natural intake of vitamin B12 through your diet