Osmotic laxatives, such as MiraLAX®, are generally well-tolerated and have very few side effects. Studies have shown that MiraLAX® increases bowel movement frequency with less straining and improves stool consistency. If gastrointestinal side effects do occur, they are usually mild and transient.

MiraLAX is an osmotic laxative. That means it draws water into the colon, which softens the stool and may naturally stimulate the colon to contract. These actions help ease bowel movements. Colace is a stool softener.

How long does it take for MiraLAX® to work? MiraLAX® generally produces a bowel movement in one to three days. Because it works naturally with the water in your body without causing harsh side effects, you do not need to worry about sudden urgency.

Miralax usually takes effect in 1 to 3 days, but this can vary. You can take Miralax once daily for up to a week at a time. If you need it longer than this, contact your healthcare provider. Miralax can cause common side effects like nausea, cramping, and bloating.

You can take Miralax once daily for up to a week at a time. If you need it longer than this, contact your healthcare provider. Miralax can cause common side effects like nausea, cramping, and bloating.

MiraLAX usually produces a bowel movement in 1 to 3 days. You may start taking MiraLAX at the first signs of constipation and continue taking one dose per day until you experience relief (up to 7 days maximum or as directed by your doctor).

The bottom line You can take Miralax once daily for up to a week at a time. If you need it longer than this, contact your healthcare provider. Miralax can cause common side effects like nausea, cramping, and bloating.

When used as directed for constipation, MiraLAX should produce a bowel movement in 1 to 3 days without harsh side effects. It does not typically cause a sudden feeling of urgency like some other laxatives. Contact your doctor if you have used MiraLAX for 7 days and still have not had a bowel movement.

MiraLax™ softens stool and increases the number of times you have a bowel movement by keeping water in the stool. It can be taken at any time during the day. It is best, if you can take it first thing in the morning on a full or empty stomach.

The typical Miralax dosage is 17 g (one capful or packet) dissolved in 4 to 8 ounces of a beverage and taken once daily as needed.

Official answer. For relief of constipation, you can take one dose of MiraLAX at any time of the day for up to 7 days. You may prefer to take it early in the day so that it's less likely you will have a bowel movement during bedtime or late at night. MiraLAX usually produces a bowel movement in 1 to 3 days.

The diet limits fiber to 15 grams or less per day and omits nuts, seeds and whole grains. Fruits and vegetables are limited. Beverage - All Meat Or Substitute - Meat, fish, poultry, eggs, cheese, cottage cheese, creamy peanut butter.