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By supplementing with paraxanthine directly, you bypass this inefficient and variable conversion process
WO 00/53148 (Merck) discloses and claims a "method for the treatment of erectile dysfunction which comprises administering to a human subject in need of such treatment an effective amount of an agonist of the melanocortin receptor in combination with an effective amount of a cyclic-GMP- specific phosphodiesterase inhibitor or an alpha-andrenergic receptor antagonist." MT-II is a disclosed melanocortin receptor agonist and sildenafil is a disclosed PDE-5 inhibitor
Questionable at best
Too Much B12 Symptoms: Overdose Signs & Safe Dosage Vitamin B12 is essential for nerve function, DNA synthesis, and red blood cell production, yet concerns occasionally arise about the side effects of too much B12 from supplements or injections
