However, injections are much more efficient for a number of reasons: Higher Absorption Rate : B12 Injections directly bypass the digestive system so that the Vitamin B12 gets absorbed by the body as efficiently as possible
It uses your own bloods plasma, rich in growth factors, to awaken dormant hair follicles and stimulate new growth
Frequency : BPC-157 : 1-2 times daily
Haemoglobin levels begin to rise after about one week, whilst the mean corpuscular volume (MCV), which is typically elevated in B12 deficiency, gradually normalises

Flags theoretical pathologic angiogenesis potential: PMC12446177 Evidence Summary Preclinical: IBD/colitis models: High remission rates, restored mucosal architecture, improved barrier function Tendon repair: Accelerated healing, improved tensile strength, reduced fibrosis Neurovascular: Sciatic nerve protection, enhanced blood vessel growth in nerve tissue Human data (emerging): Interstitial cystitis pilot (2024, n=12): 10/12 complete resolution, 2/12 at 80% improvement IV safety study (2025, n=2): no adverse effects on cardiac, hepatic, renal, or glucose biomarkers Knee pain retrospective (2021, n=17): 91.6% reported significant improvement No large-scale controlled trials published Safety: No immunosuppression or hormonal disruption in available data 2025 systematic review (HSS Journal): recommends caution due to limited high-quality clinical evidence 2025 narrative review: flags theoretical pathologic angiogenesis risk Stable in gastric acid (oral administration viable) No observed toxicity at therapeutic doses in published reports Foundational Reviews Sikiric P, Seiwerth S, et al
