Approximately 6 ml = 1Teaspoon
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A teaspoon is 1/6 ounce. 3 teaspoons = 1 tablespoon, 2 tablespoons = 1 ounce.
an ounce (US) is ~29.6 ml so a teaspoon would be 4.9333...ml
an ounce (Imp) is 28.35 ml (the volume of one ounce[weight] of water) so a teaspoon would be 4.725 ml
Unless your teaspoon is defined as a measure equal to 1/96 of a pint (imperial measure) which would then make it 5.9 ml a much larger measure. You may be better off keeping your measures in milliliters or cc.
The amount of a medicine in a tablet is measured in milligrams.
There's roughly 5ml in a teaspoon but teaspoons are all slightly different sizes and if you fill one with a medicine it's easy to spill. I'd recommend using a dosing cup rather than a spoon for any medicine.
The word douse means to pour something. The word dose is to pour a measured amount "a dose of medicine"
5 ml in a teaspoon
A milligram is a very small amount (a teaspoon is 5 mg of water). So not a unit to weigh coal in.
A teaspoon of liquid medicine is about 5 ccs.
1 teaspoon
Yes, medicine can be measured in milliliters, but it can also be measured in cubic centimeters, or cc, which are identical to milliliters.
A teaspoon holds 'about' 5 ml, so the spoon would need to be 1/5 full - but, for such a small amount of medicine it would be safer to use a pippette (dropper) where you would be able to measure 1 ml more accurately.
Medicine can be measured in millilitres
It is 1 teaspoon.
Anything with masscan have that mass measured and expressed in grams.