Do nutraceuticals work in erectile dysfunction? Although nutraceutical based treatments are often offered for erectile dysfunction (ED), their efficacy remains doubtful. In a recent meta analysis, the efficacy of available nutraceutical L arginine and Erectile Dysfunction: Uses, Side Effects, Benefits Allo Health Blog L Arginine L Carnitine (ARGI L SURE), Pack Size: 1*10 Tablets, Strength: 1000 mg Serum l carnitine and vitamin D levels may be low among oral sildenafil citrate non responders International Journal of Impotence Research L Carnitine Fumarate Olympian Labs Viagra & Cialis Interactions with Arginine, or Others ConsumerLab.com