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Phenergan and Allergic Reaction: What Users Say

Allergic reaction: mentioned by 4 users (2.6%)

Based on user experiences from 151 Phenergan reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

drowsiness 19.2%
nausea 13.2%
sleepy 6.6%
anxiety 4.6%
hallucinations 4.6%
tiredness 4.6%
vomiting 4.6%
dizziness 4.0%
allergic reaction 2.6%
restless leg syndrome 2.6%

Reviews for Phenergan

  • Lit...
  • March 30, 2012

For Nausea/Vomiting "I have been using Phenergan to treat nausea for years. I have frequent and severe nausea associated with abdominal pain. It has been over three years, and I am yet to get a diagnosis. I am grateful for this medicine. It is the only thing that stops the nausea. I would be crazy without this medicine! I was given Phenergan in the ER after I had a bad reaction to Zofran. It worked so well, I asked the doctor to send me home with a prescription for it. At my last ER visit, they told me they were out of Phenergan and that it was in short supply. I was given Bentyl instead. That also gave me a bad reaction. I do without nausea medicine in the hospital if they do not have Phenergan."

10 / 10
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33 Report
  • SGa...
  • Taken for less than 1 month
  • October 24, 2019

For Allergic Reactions "Was prescribed promethazine (Phenergan) 25 mg after a procedure and had a severe allergic reaction to the medication. My face broke out in red, itchy hives, which spread down my neck and soon covered my entire body, head to toe. My throat began to swell up, and my heart rate spiked. Be careful with this medication if you've never taken it before."

1 / 10
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13 Report
  • Anonymous
  • Taken for less than 1 month
  • September 23, 2012

For Nausea/Vomiting "I have chronic pancreatitis and have severe nausea almost every day. My doctor tried many different medicines for nausea and vomiting over the 8 years I've been sick. Several years ago, I tried Phenergan and had a severe allergic reaction. I later learned it is called a tonic reaction."

2 / 10
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10 Report

Frequently asked questions

  • nic...
  • March 9, 2009

For Light Sedation "I suffered a reaction to this product. I bought it for help with sleeping, and I was unable to sit or lie down due to the restless nerve endings that lasted all night and most of the following day."

1 / 10
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33 Report

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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.