Methylcobalamin is often taken to improve cardiovascular problems, cognitive impairments, behavioral issues associated with autism, and circadian rhythm disturbances
Vitamin B9 (Folate) Essential for red blood cell formation DNA synthesis Supports healthy cell growth and function Symptoms of a deficiency: Fatigue Weakness Shortness of breath Dizziness Pale skin Headaches Vitamin B12 Supports red blood cell formation Supports nerve function Helps with energy production Supports brain function Symptoms of a deficiency: Numbness or tingling in hands and feet Fatigue Weakness Low tolerance to cold Pale skin Mouth ulcers Memory and cognitive issues As you can see, theres a lot of overlap between symptoms of different B vitamin deficiencies
RetzlerRx supplements are selected as part of an evidence-based preventive longevity medicine approach
Our clinical team provides comprehensive training on reconstitution, injection technique, site rotation, and proper storage
A highly bioavailable form of acetyl-L-carnitine, essential for brain function, energy production, and nerve health
Direct NAD+ IV Tolerability A small 2026 commercial-infusion study reported short-term tolerability data and variable exploratory metabolic outcomes, with more research needed beyond 30 days
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