Limestone is by definition a rock that contains at least 50% calcium carbonate in the form of calcite by weight. All limestones contain at least a few percent other materials. These can be small particles of quartz, feldspar, clay minerals, pyrite, siderite and other minerals.
Answers (4) You have not mentioned the name of the medicine in your post. Ideally 4 times a day means every 6 hours. It depends on what the medicine is as to how rigid you should be in regards to dosing. If the medicine is an antibiotic then every 6 hour dosing is important as is pain relief medication if in severe pain. If the dosing isn't so critical then 4 times a day could be evenly spaced out during the waking hours.
HOW TO USE: Take this medication by mouth 1 to 2 times daily as directed on the product package. If your doctor has prescribed this medication, take it exactly as directed. If taking 1 dose a day, take it at bedtime. Take each dose with a large glass of liquid (8 ounces or 240 milliliters). Do not chew tablets or capsules.If you are using the liquid form, use a medication measuring device to carefully measure the dose.