How do i cure my dark toenails or a toenail fungus?

Many ways...: Topical solutions, oral medications, laser treatments, surgical removal, homeopathic remedies, etc. The most used treatment is oral Lamisil (terbinafine) tablets once daily for 90 days. See a podiatrist for what may be best for your specific needs and expectations.

Three options: There are three main treatment options for toenail fungus. The first option is an oral medication. The tablets although highly effective do have some possible side effects and consequences. Direct doctor supervision is needed. The second option is laser treatment. This option is also highly effective, in my experience, without any significant side effect. The third option is a topical medication.

Toe nail: Treatment of toenail fungus is almost always cosmetic (medically not necessary).