Sure. Medical care expenses must be primarily to alleviate or prevent a physical or mental defect or illness.
Getting a shot for shingles surely fits this. (say that 3 times!)
A shingles vaccine is a valid medical expense no matter what your age.
Are your medical expenses greater than 7.5% of your income? Just remember that medical expenses have to be pretty substantial to benefit your tax return. You must also itemize on Schedule A and not take the standard deduction.
