This medicine works best when taken with a glass of water on an empty stomach (either 30 minutes to 1 hour before meals or 2 hours after meals) since that way it will get into the blood sooner. However, in some cases your doctor may want you to take this medicine with meals or right after meals to lessen stomach upset. If you have any questions about how you should be taking this medicine, check with your doctor.
Take this medicine only as directed. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. To do so may increase the chance of serious side effects.
In order for this medicine to help your medical problem, it must be taken every day in regularly spaced doses as ordered by your doctor . This is necessary to keep a constant amount of this medicine in the blood. To help keep the amount constant, do not miss any doses.
Make certain your health care professional knows if you are on any special diet, such as a high-protein, low-carbohydrate or low-protein, high-carbohydrate diet.
The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
After you begin taking theophylline and guaifenesin combination, it is very important that your doctor check your blood level of theophylline at regular intervals to find out if your dose of theophylline and guaifenesin combination needs to be changed. Do not change your dose of theophylline and guaifenesin combination unless your doctor tells you to do so.
If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.