[162] [163] Several states and cities ended business relations with the company
A 12-week randomized controlled trial in vegans and vegetarians with marginal deficiency (Effect of two different sublingual dosages of vitamin B12 on cobalamin nutritional status, Del Bo and colleagues, Clinical Nutrition , 2018, 40 subjects) found that even a modest sublingual dose of about 50 mcg per day restored serum B12 and improved holotranscobalamin, methylmalonic acid, and homocysteine, which confirms that sublingual liquid B12 can correct a marginal deficiency in plant-based eaters
As a result, it is best to talk with a doctor before taking L-arginine.
To me the biggest concern is that these companies appear to be promoting a lifelong duration of therapy, as evident by their zero attention to getting people off the drugs, without reverting back for both weight gain and risk of adverse outcomes
You actually find this amino acid in some of these shower gels which say they "wake" you up too