It also supports collagen production, improves fibroblast activity (important for wound healing), and helps regulate inflammatory cytokines
The perifollicular vascular network that VEGF supports is not merely passive plumbing it delivers the hormonal signals (androgens, thyroid hormones, growth factors) that regulate follicular cycling, making vascularization a determinant of both hair growth rate and follicle cycling phase duration
In fact, its a Systematic Review of other existing and previously conducted research (Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency: a systematic review of randomised controlled trials C.C
Summary: Vitamin B12 supplements can be taken at any time of day, as absorption mechanisms function consistently throughout the 24-hour cycle, with consistency being more important than specific timing
Oral Supplements: Which Is Right for You
Larger, longer clinical trials are needed to confirm long term effects