When considering vitamin supplementation for erectile dysfunction, one of the first vitamins that you may come across in literature would be Vitamin D. This is a vitamin that can be easily obtained through many types of dairy products like milk, cheese, and yogurt and is also in abundance if you live in a tropical climate. Sunlight is able to give us a natural dose of vitamin D daily.  Although vitamin D is usually associated with improving bone strength and prevention osteoporosis, another valuable feat of vitamin D is the fact that it helps reduce atherosclerosis. Studies confirm that there is a similar underlying mechanism that occurs between conditions like cardiovascular disease and erectile dysfunction. As blood vessels are damaged and filled with plaques, the diameter for blood to flow through is gradually reduced. After a few years, the amount of blood may be reduced substantially. Vitamin D is able to help activate cells that remove some of these dangerous plaques and delay the onset of ED. 
Mirja Holtrop was born and raised in Germany, where she studied Computer Science and Public Relations. After working as a Marketing Assistant for a couple of years she joined the Dr. Rath Health Foundation. In the early 2000s she moved to South Africa where she studied Education at the University of Cape Town. Her first book, ‘The Secret of Cells’, was published in 2004.
As men age, their estrogen levels gradually rise, while testosterone levels fall. Anti-cancer coupounds called indoles can help strike a balance. Cruciferous vegetables like broccoli are rich in indoles, which boost testosterone production by breaking down and flushing the system of excess estrogen, which inhibits the production of male sex hormones. In one study, supplementing with indole-3-carbinol from cruciferous vegetables for just 7 days cut the estrogen hormone estradiol in half for men. Another study found indole supplementation significantly increased urinary excretion of estrogens.
Experts don't yet know whether the vitamin folic acid (also known as folate) is an effective natural treatment for erectile dysfunction. Research has shown that for some men, taking sildenafil (Viagra) together with folic acid and vitamin B6 seemed to help with erectile dysfunction more than taking medicine alone. Some experts contend that folic acid improves the function of the blood vessels involved in erections. But scientists say they need more studies to know if folic acid helps erectile dysfunction, either alone or in combination with other treatments.
Between 2001–2006, one-third of the US population had insufficient amounts of vitamin D, according to the Institute of Medicine. Risk factors for vitamin D deficiency include obesity and high BMI, not enough sun exposure or outdoor activity, having darker skin and suffering from certain from inflammatory conditions like Crohn’s disease. You can get a blood test to find out if you’re vitamin D deficient.
Research is mixed on the effectiveness of acupuncture as an erectile dysfunction cure, but one study published in November 2013 in the Journal of Alternative and Complementary Medicine found that acupuncture can be beneficial for men experiencing erectile dysfunction as a side effect of antidepressants, including selective serotonin reuptake inhibitors (SSRIs) and serotonin noradrenaline reuptake inhibitors (SNRIs).