Hello dear I understand your concern Penis size does not determine the potency of the men/satisfying factor to parner . Genetic factor determine the size of penis and after certain limit it will not increase. Normal size of penis in flaccid state: 2 to 4 inches Normal size of penis in erect position: 4 to 6 inches. Anterior female vaginal wall that is sensitive to sex: 3 inches Anterior 3 inches of female vaginal wall is sensitive to sexual stimuli. So 3-3.5 inches penis sufficient to satisfy the women. So just be relax. Do not get influenced by the commercial available product/advertisement product as it cause harmful effect. Take diet rich in protein, fruits, vegetables, fish, chicken, meat and green leafy vegetables. Do regular exercise like walking, running, swimming and medication Avoid excessive smoking and alcohol. Hope this may help you Contact HCM for further health issue Best regards Dr. Sagar