Cultured dairy or fermented foods (ideally organic and raw) — these are beneficial for replacing good bacteria in the gut since they provide probiotics. Probiotics help control yeast and also have numerous immune-enhancing effects. For other sources of probiotics, in addition to yogurt or kefir try cultured foods like kimchi, kombucha or sauerkraut.
Chronic nail trauma, such as repeatedly starting and stopping, kicking, and other athletic endeavors, can cause damage to the nails that can look a lot like fungal nails. This sort of repetitive trauma can also occur with certain types of employment or wearing tight-fitting shoes. Some traumas may cause permanent changes that may mimic the appearance of fungal nails.
Prevent future occurrences. There are many situations that make you more at risk for infection. You are at a higher risk if you are older, have diabetes, have an impaired immune system, or have poor circulation. If you are at high risk, you should take extra care to prevent infection. Preventative measures include wearing shoes or sandals when you are at damp public areas such as swimming pools or gyms, keeping your toenails clipped and clean, making sure your feet are dry, and drying your feet after you shower.
Onychomycosis (toenail fungus) is an infection of the nail and sometimes surrounding tissue. It is extremely common with 20 percent of the general population and 75 percent of people over 60 years old affected. Frequently the problem causes cosmetic concerns, but many patients also experience pain. Sometimes toenail fungus can allow more serious infections to develop.
If the diagnosis is uncertain, direct microscopy of a potassium hydroxide preparation of a skin scraping (known as a KOH test) can confirm the diagnosis of athlete's foot and help rule out other possible causes, such as candidiasis, pitted keratolysis, erythrasma, contact dermatitis, eczema, or psoriasis.[13][23][27] Dermatophytes known to cause athlete's foot will demonstrate multiple septate branching hyphae on microscopy.[13]

Caprylic acid, one of the medium-chain fatty acids in coconut oil, has the ability to penetrate the durable cell wall of candida and other fungi.  Without its protective coating the cells of the fungus dissolve, effectively destroying the infection.  Apply a thin layer of coconut oil to infected areas and let it soak in for at least fifteen minutes.  Coconut oil is great for skin health, so there is no limit to how often you can use this treatment.  Just make sure you aren’t allergic to coconuts before applying this product to sensitive tissue.
Topical treatment is also usually recommended for children. One reason for this is that most oral medications aren’t suitable for children. Another reason is that children have thinner nails that grow more quickly, so it’s assumed that treatment with nail polish or creams is more likely to work in children than in adults. White superficial onychomycosis is also often treated with a nail polish or cream.
Onychomycosis – commonly known as toenail fungus – is characterized by inflammation, pain, and swelling of the toe, as well as yellowing, thickening, and crumbling of the nail itself.  Toenail fungus can be the result of abnormal pH of the skin, continuous exposure to moisture, wearing synthetic socks, compromised immune system, sweat build-up in shoes, poor foot hygiene, or weak circulation such as that caused by diabetes.

I ditched this product and trusted my instincts. I tried my own home remedy. No, I didn't see "immediate results" but I am gradually noticing a positive change. Mix equal parts of warm water, hydrogen peroxide, and Apple Cider Vinegar with mother in it. Soak for 20-30 minutes or make a paste with these products and baking soda and put it directly on nails. Wash off after about 30 minutes. Put lavender and tea tree oil on for the remainder of the day. At night, cover with Vicks and go to sleep. After a week's time, my nails actually look healthier and seem stronger. The skin around my nails is less red and irritated. Is the fungus gone? No, not yet...but it is moving up with the growing nail, which is much better progress that I had with this product.
Research suggests that fungi are sensitive to heat, typically 40–60 °C (104–140 °F). The basis of laser treatment is to try to heat the nail bed to these temperatures in order to disrupt fungal growth.[37] As of 2013 research into laser treatment seems promising.[2] There is also ongoing development in photodynamic therapy, which uses laser or LED light to activate photosensitisers that eradicate fungi.[38]
If you have diabetes or a weakened immune system, treatment is especially important. After getting a fungal nail infection, people who have diabetes have an increased risk of developing sores that do not heal. Sores that do not heal can lead to a serious health problem. It’s important to see a dermatologist (or other doctor) at the first sign of a nail problem. A dermatologist can tell you whether you have a nail infection or something else.
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