These “sea pistachios,” as Kimmy Schmidt called them, are no joke.They’re one of the richest food sources of erection-enhancing Vitamin B12 you can find. The boner-boosting bivalves are also high in L-arginine, an amino acid that converts to nitric oxide (NO), the Marvin Gaye of naturally occurring gases: It causes blood vessels to relax and facilitate blood flow, helping you get and stay hard. Additionally, clams are high in muscle-building protein.
Tribulus terrestris is a dicotyledonous herbal plant of the Zygophyllaceae family, used to increase serum testosterone levels, which has only been shown in animal studies (40). A prospective, randomized, double blind study of 30 men showed that Tribulus terrestris was not more effective than placebo on improving IIEF scores or serum total testosterone (41). Two accounts of hepato-nephrotoxicity have been reported in young men who ingested high doses of this herbal medication (42,43).
To understand the physiology of erectile dysfunction, we need to know erection first. An erection occurs when impulses from the brain and genital nerves cause blood to fill the two chambers known as the corpora cavernosa in the male penis. This causes the penis to expand and stiffen. Anything that blocks these impulses or restricts blood flow to the penis can result in ED. This block may be caused by psychological, neurologic, hormonal, arterial, or cavernosal impairment or even from a combination of all these factors.3