It is so troublesome to store the Glyceryl Trinitrate tablets into the given brown glass bottle. Can I use some other containers?
Glyceryl Trinitrate is a very volatile (i.e. easy to evaporate) substance, and the tablet will no longer be useful if the Glyceryl Trinitrate is gone by evaporation.
To prevent this from happening, it is necessary to place the tablets in a brown bottle and keep the tablets away from direct sunlight.
Glyceryl Trinitrate tablets should also be kept in a cool and dry place, away from moisture.
However, DO NOT put Glyceryl Trinitrate tablets into a refrigerator.
It is also NOT recommended to put Glyceryl Trinitrate tablets into pockets of your clothes, to avoid the body heat from evaporating Glyceryl Trinitrate.
Some more notes on using Glyceryl Trinitrate sublingual tablets:
Tablets should NOT be used 8 weeks after first opening of the original glass bottle.
And do seek emergency medical attention if your heart pain (angina) is not relieved by taking 3 Glyceryl Trinitrate tablets in a row!