melanotic macule lips Does anyone know what this black mark on my lip is? Started last August so it's I've had it nearly a year, was living in Spain at the time for 6 months Melanotic Macule Lip | TikTok

First things first: what is the FDA

Biological Role of Vitamin B12 Helps make red blood cells Prevents certain types of anemia Keeps nerves protected Supports memory and focus Helps turn food into energy B12 deficiency may lead to fatigue, shortness of breath, nerve damage, memory impairment, mood changes, and irreversible neurological complications if untreated

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Doherty TJ

Since the ATP binding site is conserved among all three RyR isoforms 27,32,33 , it would follow that atorvastatin may also bind to RyR2 and RyR3 at the same site, but this remains to be confirmed