You can deduct the cost of Foreign medical expenses, as long as the expense(s) are for: cure, mitigation, treatment, or prevention of disease, and the costs for treatments affecting any part or function of the body. These expenses include payments for legal medical services rendered by physicians, surgeons, dentists, and other medical practitioners. They include the costs of equipment, supplies, and diagnostic devices needed for these purposes
"In general, you can't include in your medical expenses the cost of a prescribed drug brought in (or ordered shipped) from another country. You can only include the cost of a drug that was imported legally. For example, you can include the cost of a prescribed drug the Food and Drug Administration announces can be legally imported by individuals.
You can include the cost of a prescribed drug you purchase and consume in another country if the drug is legal in both the other country and the United States"
https://www.irs.gov/publications/p502/ar02.html#en_US_2016_publink1000179071
