COFFEE: More than once daily...if you have the right genes, shows a "protective effect" for cutaneous melanoma. Not sure exactly what that means, and not really clear if these genes might be the protection in and of themselves, without the addition of coffee. Presumably they looked at that, but????
DOXYCYCLINE: An older antibiotic, causes some nausea, but pretty good in treating acne, but...apparently...it kills and inhibits growth of melanoma cells.
CURCUMIN: The yellow part of curry and mustard also stops melanoma in its tracks, at least in a petri dish.
CIMETADINE: aka: tagamet, taken for heart burn, ulcers, etc, as it decreases stomach acid, helped get rid of melanoma in at least three horses. There's a smattering of human "data" out there, too.
NSAID's: Non steroidal anti-iflammatory drugs like Advil seem to decrease the risk of melanoma and squamous cell skin cancers.
SHIITAKES: Good old Lentinula edodes mycelia! If you're a mouse with melanoma and you have access to mushroom juice...you are in luck, my friend.
THE DATA: Read at your own risk (the stuff on NAID's and Shiitakes I've posted before)!!