Medical professionals and researchers are not clear if the allergic reaction is caused by the preservatives or other substances found in the injection solution or the vitamin itself
The practical solution is dietary
Refer to the approved prescribing information for each specific product for titration guidance
The question is whether, in your specific situation, it preserves enough muscle to justify the cost, or whether simpler interventions would give you the same result at a fraction of the price
There exist three distinct isoforms of HO referred to as HO-1, HO-2, and HO-3
Its use is considered illegal in many countries, and it is often sold on the gray market, where product quality and purity are not guaranteed, posing additional health risks