Usually, so sunlight won't affect the quality of the vitamins inside.
some are photoreactive
Dark bottles are used for chemicals sensitive to UV or some visible light.
Some medicines are photoreactive and will deteriorate if exposed to extended direct lighting.
Some medications are deactivated by sunlight.Dark colored bottles prevents too much sunlight from coming into contact with the medication and inactivating it.
Some chemical compounds are sensitive to light. The dark colored bottle prevents light from getting to the contents. The same is true for things like beer and medicines.
Under the action of light, nitric acid slowly decomposes into oxides of nitrogen plus free oxygen, and may thus produce a pressure in a stoppered container. If kept for any time, the stopper should be occasionally loosened (carefully) to avoid pressure build up.
well some foods and beverages (like rootbeer)are stored in brown bottles to keep them cold.the brown of the bottle reflects the sun away from the food or beverage to keep it nice and cold. :)
Yes, bottle green is a colour of green. It is a dark mossy green, like some old bottles.
In the majority of cases, medications should be stored in a cool, dry place. The medicine cabinent in a bathroom is not a good spot, due to the heat and moisture that is there. On top of a bedroom dresser or nightstand would be a good choice. Remember, you can always ask your pharmacist where the medication can be stored. There are only a few that should be case in the fridge, mainy injectable drugs or insulin.
For some vitamins and other drugs, it is important to keep them out of the sunlight as this exposure can change their chemical structure. The dark brown bottles keeps the sunlight out to protect them.
Medications stored in glass containers are usually liquid. These medications are better stored in glass due to how they sometimes react to the plastic of the other containers. Also, some of these glass containers are known to be darkened, in order to help preserve the medication in the bottle.
Cough medicines are abused for being addictive when used for longer and for some rare side effects like dark spots on the skin.
Medicine and perfume are normally made up of chemical compounds. Exposure to light can often provide enough energy to breakdown these compounds, changing the way they work and smell. Dark colored bottles help protect these compounds and allow them to remain stable for a longer period of time.