The typical adult dosage of polyethylene glycol for treating occasional constipation is 17 grams of powder dissolved in a beverage and consumed once daily. It may take up to four days after starting this laxative to have a bowel movement. If you do not have a bowel movement right away, do not take more than the standard amount.
An Introduction to Dosing With Polyethylene Glycol 3350
There is only one standard recommended dose for polyethylene glycol 3350 (MiraLAX®). As is always the case, do not adjust your dosage unless your healthcare provider specifically tells you to do so.
Polyethylene Glycol 3350 Dosage for Constipation
The recommended dosage of polyethylene glycol 3350 for treating occasional constipation is 17 grams (about one heaping tablespoon) of powder dissolved in four to eight ounces of liquid and swallowed once a day.
Each single-dose packet contains 17 grams of powder. Therefore, if you are using the single-dose packets, dissolve an entire packet in four to eight ounces of liquid and drink it.
If you are using the multidose bottles, use the cap of the bottle to measure the correct amount of powder. Look for the dose line on the cap.
Although polyethylene glycol 3350 is not officially approved to treat constipation in children, it is sometimes used off-label for this purpose. If your child's healthcare provider recommends this laxative, follow his or her specific dosing instructions.
The product information for polyethylene glycol 3350 states that this laxative should not be used for more than seven days. Although some people may need to use this laxative for a longer period, it is a good idea to check with your healthcare provider before using it long-term. If your healthcare provider recommends that you take polyethylene glycol 3350 for longer than seven days, you may disregard the label directions that warn against this.
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