Which is best product for fungus on the nail big toe i am diabetic and some products burn my skin ?

None: Often nail fungus does not require treatment. Prescription meds work well but are expensive and liver tests must be monitored.

See a podiatrist: Penlac (ciclopirox) nail laqure is a good medication that I use for diabetics. This is a nail polish so it will not be applied to your skin.

See below: Unfortunately topical agents have a success rate of less than 10% at best. Some doctors are using lasers, but i will defer to my healthtap colleagues to address, but you may not be a candidate due to diabetes. Oral agents work best but they can cause liver enzyme elevation. Without knowing your full history, i would recommend you discuss your options with your primary.

Consider laser...: Because of your diabetic status, you are smart to be careful with your treatment. See your podiatrist. Ask them about topical medications that can be used with those with sensitive skin, but you may also want to ask them about their thoughts about incorporating laser therapy too. There is valid evidence based research with this type of treatment for some.

Have them evaluated.: There are oral antifungal medications available for the treatment of nail fungus. Specialized lasers are also now available for treatment of fungal nail infections. Have your nails evaluated and get the appropriate treatment.