Yes. Losing weight and increasing exercise is the best home treatment for erectile dysfunction. Have your provider check a testosterone level to make sure it's in good range.
No. Most e.D. Is a real structural disease and a signal that there is atherosclerosis with increase risk of heart attacks and strokes. There is no proven over the counter or natural product (non prescription) remedies. Most afrodisiacs don't work either. Discuss the options with your primary care physician, or an urologist i.e. Viagra, cialis, levitra, (vardenafil) caverget, vacuum devices muse, testosterone.