Vitamin B12 injections are generally safe when administered by qualified professionals
Liposomal BPC-157 + KPV by Quicksilver Scientific

BPC-157 Supports Vascular and Neurological Repair One underappreciated hallmark of long COVID is endothelial dysfunction damage to the lining of blood vessels that impairs circulation, oxygenation, and tissue delivery.7 BPC-157 has demonstrated angiogenic (new blood vessel formation) effects in research models, upregulating VEGFR2 and promoting collateral circulation in ischemic tissue.8 This matters for two reasons: Cardiovascular symptoms (breathlessness, reduced exercise tolerance, tachycardia) may partly reflect impaired tissue oxygenation from vascular damage Neurological symptoms (brain fog, cognitive impairment) may similarly reflect reduced cerebral blood flow BPC-157's neuroprotective effects shown across models of traumatic brain injury, dopamine dysregulation, and serotonin syndrome also suggest value in supporting the neurotransmitter disruption many long COVID patients experience.9 BPC-157 Modulates Inflammation Without Immune Suppression This is critical

The World Health Organization (WHO) labels B12 deficiency as the most common nutritional disorder in the world
now with Erlanger Gastroenterology, Chattanooga, Tennessee Kornpong Vantanasiri, MD Resident in Gastroenterology, Mayo Clinic School of Graduate Medical Education, Mayo Clinic College of Medicine and Science, Rochester, Minnesota Xiao Jing (Iris) Wang, MD Consultant, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota