what is the b12 injection called Vitamin B-12 - Mobile and Clinic IV Therapy — ASAP IVs Cyanocobalamin - Wikipedia

Source Bacteria synthesize methylcobalamin and methylcobalamin occurs in animal-based foods while cyanocobalamin is synthetic

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It primarily affects the gastrointestinal and nervous systems of cats, leading to a wide range of symptoms such as fever, weight loss, loss of appetite, and neurological abnormalities

The results showed that vitamin D supplementation could significantly reduce headache attacks per month, headache days per month, and migraine disability assessment (MIDAS) score in migraine patients

It is possible that the effects are additive, that they are redundant, or that combining approaches produces unexpected outcomes