DEAR DR. GOTT: I have a problem that baffles all of the internists, family physicians, dermatologists and alternative health experts I have consulted over the years.

I stopped using acrylic nails about 15 years ago. I now do my own manicures with tools that are sterilised weekly. Despite these precautions, I have nail fungus on at least five of my nails. I understand that until I treat the skin under the nail, the fungus will continue. A year ago, a black/green mold appeared on my right thumbnail. The nail then fell off. When it started to grow back, so did the fungus.

This black/green mold concerns me. It is slowly spreading to more nails and is very unsightly. What is causing this to happen? How can I get rid of it?

I don't have my hands in water excessively, and, when I do, I wear rubber gloves. I have tried every over-the-counter product, including tea tree oil.

DEAR READER: Nail fungus is a common disorder that leads to thick, yellow, misshapen nails.

I tell most of my readers with this condition to try Vicks VapoRub. However, you may have more success using a new product called Miranel. It's designed to penetrate the skin and nail. This allows the product to work faster and more effectively than does Vicks.

Black/green "mold" is not typical for nail fungus. While you may wish to try to treat it yourself, I urge you to see your primary-care physician. Ask for a nail culture. This involves taking a scraping of the nail fungus and "mold," then analysing it in the laboratory. The lab technicians can then determine what type of organism or organisms are present and the best way to treat them. You may have two or more types of fungus, necessitating the use of prescription medication.

To give you related information, I am sending you a copy of my Health Report "Dr. Gott's Compelling Home Remedies." Other readers who would like a copy should send a self-addressed, stamped No. 10 envelope and $2 to Newsletter, PO Box 167, Wickliffe, OH 44092. Be sure to mention the title.

DEAR DR. GOTT: Can calcium and fish oil be taken at the same time? I find it easier to remember if I take all my pills at once but worry that I am not getting all the possible benefits.

DEAR READER: As far as I know, there is no problem taking fish oil and calcium together. If you are worried about taking medications together, speak to your pharmacist, who will be able to help. He or she should know of any possible dangers or complications that may occur between two or more medications taken at the same time.