Grades: Grade Point Average (GPA) Last updated: March 20, 2017 The grade point average is based on grades earned in courses offering credit at Duke, and may be calculated based on the following numerical equivalencies in the grading system: a+ 4.0
Vitamin E is considered the âSex Vitaminâ and is sure to add spice to your sex life. Vitamin E increases blood flow and oxygen to your genitalia. It also is a key player in the production of your sex hormones to give you that sex drive boost.
Vitamin B6 is a libido enhancer because it helps in controlling elevated prolactin. It also aids in estrogen and testosterone function, as well as production of red blood cells, serotonin, and dopamine. For men with low sperm count Vitamin B6 has been show to help increase these levels.