Does Miralax Raise Blood Pressure (Page 3)

I've never had a blood pressure issue and since taking MiraLAX for a week for constipation my lood pressure was 166/104! Could it be the MiraLAX?

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Re: Rhondajr51 (# 35)

The last time I checked, it is not listed as a side effect but it definitely raised my BP and many of my friends. Doctors don’t believe it when it isn’t listed.

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I’m so glad I found this thread. Showed up for my colonoscopy today and my BP was so high that they couldn’t perform the procedure. At one point was 220/120. A week prior, at the dentist, it was around 150/80 (still not great, but much lower). They strongly suggested I go to the ER, so I did that and was prescribed BP meds. Hoping that once the Miralax gets out of my system we’ll see a decrease back to normal range. The dose I was prescribed for my prep was 15 doses yesterday (about 8.3 oz) mixed with Gatorade and then another 4 doses this morning before the procedure. Very scary.

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This just happened to me. I have an aneurysm so must closely watch my BP and it has been around 110/70 for weeks. I took one packet of Miralax and 2 hours later it was 150/90! It was high for the next 48 hours (topped at 170/90 one morning, very scary!) and is finally coming down today. I will never take a PEG-3350 medication again. BP this high could rupture my aneurysm. I wish more doctors knew about the possibility of dangerously high BP from this substance.

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Re: John (# 42)

Did your BP go back down? If so, how long did it take? Mine is still messed up!

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Re: NorthernLiz (# 44)

A follow-up to this: My BP finally came down after 8 days, and with it the constipation came back. After getting badly bloated and plugged up again I took 1 Senokot in the evening.

2 hours later my BP went up 25 points and continued to be high all the next day (while the laxative worked). It topped out at 160/89. Finally the day after that (today) it came down again (so far).

I am newly on metoprolol, a beta blocker, and never had constipation issues until I was on it. Since I've now experienced a significant rise on 2 different laxatives of 2 different types (osmotic and stimulant) I am thinking now that it is some interaction with the beta blocker and the bowel signaling causing this and not the laxative itself.

5 years ago I used a PEG-based colonoscopy prep that I had no issues with. I wasn't on BP meds at the time nor a beta blocker.

I would be very interested in hearing if anyone else having this issue was also on a beta blocker and if so, which one.

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Yes, this happens to my family member every time they take it. Feels like crap and bp goes up despite being well controlled on a couple of different meds! No doubt it's the Miralax. It needs a warning - there are enough comments here to confirm it is not a super rare side effect in women over 60!

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Re: Verwon (# 1)

Raised mine as well. After I finished with a bm x 3 it went back to normal

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Re: John (# 42)

I did the same pre colonoscopy prep. Couldn’t figure out why I was getting a pounding headache and flushing. My BP is usually 118/60, but it went up to 165/90! Glad I found this forum, now I know it was the Miralax! Hoping it goes back down after the procedure tomorrow

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Re: John (# 42)

I just went through the same thing. l did the prep on Tuesday & Wednesday. I went to get the procedure and they sent me home. My BP went from 140/75 to 210/110. So I prepped for nothing. My BP is still high at 175/99 and I’m waiting for my cardiologist to call me back.

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Re: Tony (# 49)

They like to use this prep because it’s Gentle, but I can’t do it either. The volume of it makes me vomit it all up and then it doesn’t work. When I can try again they told me to ask for a specific prep they will note in my file (I don’t remember the name) I guess it’s the equivalent of a shot or two but it tastes really gross. I don’t really care how it tastes if it’s only two swallows, vomiting up all that MiraLAX and Gatorade tasted pretty gross and I didn’t even get to have the procedure so . . .

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Re: Medical Mess (# 5)

Yes made my BP go up . Didn’t finish taking it for my colonoscopy , which I cancelled.

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Re: Linda (# 48)

My BP has been high 187/101 and usually runs 115/65. Been to heat Dr and primary care provider. Each time they changed my BP pill frequency with no positive results. Stopped Miralax and bingo, BP went down after a week!

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