As demand outpaces supply, shortages have been reported, particularly in Europe, where the European Medicines Agency (EMA) does not anticipate resolution until beyond 2024
If you have a vitamin B12 deficiency, that can cause fatigue
A later study using Adenosine-loaded dissolving microneedle patches reported gains in wrinkle depth, dermal density, elasticity, and hydration
Most people notice changes in about 1 to 2 weeks
Eur J Nutr 41 (1): 12-8
While very uncommon with proper administration, it's important to be aware of more serious potential risks, often linked to improper techniques or unreliable products: Allergic Reactions: As with any substance, an allergic reaction (like rashes, hives, or difficulty breathing) is a slim possibility