References Double-blinded comparison of diphenhydramine versus lidocaine as a local anesthetic The objective of this study was to evaluate the efficacy, onset of action, duration of action, and side effects of 1% diphenhydramine compared with 1% lidocaine when used as a local anesthetic agent
Clinical experience with b12 injections for other indications does not include nausea reduction as a known effect
They operate on different cell types, through different receptor systems, affecting different physiological processes
Long-term custodial care What Medicare does not cover in 2026 for long-term care includes custodial care in a nursing home or assisted living facility, help with activities of daily living such as bathing dressing and eating when that is the primary need, and personal care services at home when skilled care is not also needed
Injectable vitamin B12 avoids this limitation by: Delivering a concentrated dose directly into systemic circulation Ensuring near-complete absorption Rapidly increasing serum B12 levels Because of this mechanism, B12 shots are often recommended for moderate to severe deficiencies or when quick correction is required