Taking medicine frequency

After seeing doctor, people will be asked to take medication,
and below is just a guideline to quantify the instruction. (though not very scientific)

1 teaspoon = 5 mili-litre,

1 tablespoon = 3 teaspoons,

take 1/day = once every morning,
take 2/day = once every 10 hrs,
take 3/day = once every 6 hrs,
take 4/day = once every 4 hrs