Any DIY AHK-Cu solution intended for more than a few days of use absolutely requires a preservative
In this blend they are already combined, and the pairing has a mechanistic rationale: NAD+ supplies the coenzyme, while 5-Amino-1MQ blocks the NNMT enzyme that would otherwise drain NAD+ precursors [4]
Also, people who have had surgery on their intestines, like weight loss surgery, or have diseases that affect the gut, like Crohns disease or celiac disease, are also at risk of not getting enough vitamin B12
The trial was 12 weeks
Anyone pregnant, breastfeeding, or with a diagnosed metabolic, hepatic, or endocrine condition falls entirely outside any studied context and should not be a subject of self-directed use
Important Notes Practical considerations for consistency and safety