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Fluorouracil topical and Pain: What Users Say

Brand names: Efudex, Tolak, Carac, Fluoroplex, Efudex Occlusion Pack

Pain: mentioned by 77 users (24.8%)

Based on user experiences from 310 Fluorouracil topical 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.

itching 26.5%
pain 24.8%
redness 19.0%
burning 14.2%
swelling 9.0%
peeling 8.4%
blisters 5.8%
bleeding 5.2%
discomfort 4.8%
rash 4.2%

Reviews for Fluorouracil topical

Commonly mentioned side effects
  • j m...
  • Taken for less than 1 month
  • September 27, 2015

Fluorouracil topical for Keratosis "This is the best!! I've been using it for 4 years and it is absolutely the best solution for AK's. I am 60 years old, fair skin, been outside for years and developed way too many AK's, not to mention basal and squamous problems too. For years, the dermatologist only used spot nitrogen and prescribed caramac. I can only assume she didn't prescribe Efudex because she needed the steady income stream from me and my insurance. By chance, I was having a physical from my family doctor. He asked me when I was going to address my AK's on the forehead. I told him I did, and he told me he could write me a prescription for medicine that solves it, Efudex. He did and I am amazed at the end results. Yes, the Efudex was painful, looked bad when it was working, but results speak for themselves."

10 / 10
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281 Report
  • JGa...
  • Taken for less than 1 month
  • May 2, 2020

Fluorouracil topical for Keratosis "This is my second time around for using Efudex. The first time was 6 years ago. I've grown up on the West coast and spent my summers in the deserts or at the beach. I am of Irish descent, brown hair, blue eyes. By the time I was 60, my face looked terrible. High danger for skin cancer, many trips to dermatologist. Began to hurt significantly on day 14. Everything I read and saw on the web said 'stick it out'. I made it to day 25. Couldn't do another minute. Dragged myself into the doc's office on a Friday afternoon. I looked like Frankenstein. Appt's clerk gasped. Doc said 'Great job. Looks like it was very effective.' That night I washed everything off, and applied Aquaphor. Next two days were most painful. After that, it got better every day, and within two months, there was no trace of the 40 years of sun damage on my face. So...I would give this a 10. I'm a teacher, and did the treatment over the winter holidays. It was all done by January 7."

10 / 10
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164 Report
  • for...
  • May 14, 2015

Fluorouracil topical for Keratosis "I am now into my 15th day of using the Efudix cream, and I look scary. I was told by my skin specialist to do my whole face, and as directed, have done so. I am a 51-year-old woman that grew up on the coast and never thought anything of it. After having a melanoma removed last year, the ugliness, pain, and itchiness of this treatment is far better than an alternative outcome. Like others, I googled pictures and was horrified, but I remember the outcome will be beautiful. I would do it again in a heartbeat."

9 / 10
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227 Report
  • Joj...
  • October 19, 2019

Fluorouracil topical for Actinic Keratosis "I am a 60-year-old with very fair skin and blue eyes who grew up at the beach. I was regularly burned to a blister stage every year. I had many keratosis burned off from age 30 to 50. Finally advised to use Efudex. I have completed treatments on my face 5 times now over the course of these 10 years. I have an unusually mild reaction each time. In fact, I have to use it for 40 days to get the full benefit. So, you never know how your own skin will react. The dermatologists have been amazed at the length of time it takes me to get a reaction. But for the chest area, the reaction is incredibly painful, red, and fast. Maybe the constant freezing of those places on my face helped more than I know? In any case, maybe it could be recommended to try a small area before using on the entire face. The end results are very good and I would not let fear keep you from trying this."

10 / 10
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111 Report
  • LTO...
  • January 3, 2015

Fluorouracil topical for Basal Cell Carcinoma "This is my second time around. I am on Day 10 of a 14-day regime, then steroid cream for another 14 days. I am in excruciating pain and I look horrific. I know it's a good thing, but it is so painful. I wanted to write here to help encourage others; I found this site because I needed encouragement. I use a dish towel with fringe to flap against my face, and that's the only relief I get. I forget how awful I look until I catch myself in a mirror."

10 / 10
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171 Report

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  • Sno...
  • January 31, 2020

Fluorouracil topical for Basal Cell Carcinoma "Face was covered in about 7 areas after years of sun damage from working in the sun, used Efudex for 15 days applied 2 times a day till the 40mg tube ran out, week 2 the pain was not nice but honestly go through it, it is worth it. Like having a face lift looking 10 years younger! Believe me it is truth. Using it on my arms now just started. For anyone going through a course, it really is an impressive cream."

10 / 10
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86 Report
  • Car...
  • May 2, 2016

Fluorouracil topical for Basal Cell Carcinoma "This is my third time over the past 10 years doing this treatment. I'm scheduled for 4-6 weeks treating my legs, stomach, and chest areas. I like that the medication seeks out and treats damaged skin only. My stomach has only 3 small spots. However, my legs and chest area that have been far more exposed to sun have a much more aggressive reaction. The pain, redness, swelling, and sores are extremely painful, however, my history reminds me that in 3-4 weeks, I will be finished, and my skin will look and be much better. Skin cancer gone and baby-smooth new skin. It's affordable and a more complete overall treatment that definitely works. Stick with the plan, you won't be disappointed!"

10 / 10
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128 Report
  • Dee...
  • Taken for 1 to 6 months
  • November 14, 2014

Fluorouracil topical for Skin Cancer "Before I started with Efudex, I googled pictures and reviews. On seeing the pictures, I decided to do one part of my face at a time. I did my lip first, and now I've just done 2 weeks on the right side of my face. I'm glad I did, especially because I work in retail. The pain of feeling like you have cold sores all over your face, thank God for makeup is all I can say. I will do my right side once my left has healed, and then my forehead followed by a microdermabrasion. I think this product is amazing, and the way it keeps working after you stop applying. Those who did your whole face all at once, I take my hat off to you."

10 / 10
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139 Report
  • urp...
  • July 12, 2009

Fluorouracil topical for Keratosis "Efudex works great but is very painful and itchy after about two weeks. I tried many creams to relieve the symptoms between applications of Efudex. One cream that REALLY helped was Traumeel. What a sanity saver. Just thought I would pass this on for others to get some relief. I hope it can help you too."

10 / 10
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181 Report
  • Sar...
  • October 7, 2017

Fluorouracil topical for Keratosis "I was diagnosed with actinic keratosis in August and then decided to apply the Efudex cream to face in the middle of September. I thought that I only had a couple of spots which I was concerned about, but after applying the cream to my forehead, temples, cheeks, nose, around the eyes, and my ears, it became quite apparent that there were a vast amount of areas that had been affected. In the first week, I saw that these areas became inflamed, although not painful. In the second week, these areas started to merge together and then looked like blisters and sores on my face, especially below my eyes. In the third week, these started to scab a little and became a bit painful, I think due to the skin feeling very dry. I am now in my fourth and final week."

10 / 10
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103 Report
  • Anonymous
  • September 29, 2010

Fluorouracil topical for Keratosis "I just finished a 14-day usage of Carac, as prescribed by my skin doctor. After the first two days, my skin started to turn red, by the 7th it started to flake, and the areas that I needed to apply it to (cheeks, temples, and forehead) turned dark red, like a bad sunburn. Days 8-14 were the worst as to pain on these areas when showering in lukewarm water or washing from the sink bowl, either way I could feel a burning sensation, as well as light bleeding at some areas on the next-to-last day. Flaking of the skin and an itchy feeling now that treatment is done. I wonder how long before my skin color returns to normal. Would I do this again? Yes."

9 / 10
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144 Report
  • Ann...
  • Taken for 1 to 6 months
  • March 3, 2019

Fluorouracil topical for Actinic Keratosis "One of the most painful experiences of my entire life. I thought childbirth was the worst pain I ever experienced, but this pain is indescribable. I'm at 5 weeks now. Hope to come off soon. Just opening my mouth to try to eat is excruciating. My doctor never warned me about any of this, nor did he tell me I was going to look like a monster."

10 / 10
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80 Report
  • ETa...
  • Taken for 1 to 6 months
  • August 7, 2019

Fluorouracil topical for Skin Cancer "Used Efudex on my whole face 10 years ago. I think it was for 4 weeks. Week 2 the redness turned into lesions on my whole face, especially my left side (driver's side). Hurt like hell. I play poker sometimes at a casino. I didn't have to look at me so my appearance wasn't my problem. After the lesions healed, my face was as smooth as a baby's butt. A couple of the players were surprised I was still alive because I looked like I had full-blown AIDS. I recommend it as I had no idea my face was such a mess. It is an ordeal. Using it on my ear now, started 6 weeks ago and in the last few days. Fingers crossed. Not pleasant but hopefully I can avoid surgery and plastic surgery."

9 / 10
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71 Report
  • Anonymous
  • January 5, 2012

Fluorouracil topical for Basal Cell Carcinoma "I've been using Carac off and on for over a year. I did my face for three weeks, then my chest, then my back. I am now going back over specific areas of my face. This cream is amazing. It is somewhat painful and quite unattractive visually as you are going through the treatment, but the results are worth it. My skin doesn't have rough red patches of scaly skin anymore and no more discoloration. I would definitely recommend it!"

10 / 10
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137 Report
  • Oil...
  • December 25, 2014

For Keratosis "I was on Fluorouracil two times a day for two weeks. It wasn't too bad for the first 10 days, then it continued to burn more with every application. The most painful part of the Fluorouracil treatment was after I completed the applications. A nurse recommended that I mix ⅓ cup of white vinegar with 6 cups of water and place the mixture in the refrigerator until chilled. Then, use a very soft washcloth and the vinegar solution to cleanse my face. She also said to take the damp washcloth and place it over my face for 15 minutes 4 times daily. Contrary to what I thought, the vinegar solution did not burn, it soothed incredibly."

10 / 10
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114 Report
  • JMe...
  • January 18, 2020

Fluorouracil topical for Skin Cancer "Two weeks after Efudex, my skin looked incredible - soft, and everyone asked if I got a peel! One day later, on day 15, there were burn abrasions, raised cuts, and I went to my scheduled two-week check-in with the doctor. She said it’s “working beautifully” and to continue for two more weeks. During week 3, I had small “cuts” all over my face where I applied the cream twice a day. Small scabby cuts also appeared on my scalp and chest, even though I didn’t apply the medication there. The doctor said that was strange, but I read in the leaflet that it’s plausible. I had a horrible taste in my mouth and felt sick to my stomach within 20 minutes of applying it. I’m in horrible pain, look awful, and have two more weeks to go. I had SCC with two Mohs surgeries and then reconstruction of my nose and head earlier last year. I'm 47 years old and grew up in California sun. Hope this prevents future SCC."

8 / 10
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67 Report
  • Boa...
  • Taken for less than 1 month
  • August 8, 2020

Fluorouracil topical for Basal Cell Carcinoma "Ten years ago, I used Aldara over my whole face. 20 minutes of pain after each application and a violent reaction after nine days. My face looked as though I had been in a bad fire and scared the kids at school. It did heal, and I looked 10 years younger. I have just finished three weeks on Efudex and three weeks healing. My skin looks like the proverbial baby's bottom, and I am very happy with the results. This time, I treated my whole face, ears, and parts of my neck. Applying the Efudex was less painful than the Aldara, even a little bit soothing. It was hard to sleep with sore ears. Tried all kinds of moisturizers, and they caused stinging for five to ten minutes. I used Vaseline two to three times daily, and it was by far the most satisfactory. Very pleased with the results. Also treated both arms at the same time. Used three tubes of Efudex in this session. Always worked outside and did lots of boating. I am 76 years young now after this treatment."

10 / 10
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60 Report
  • Nin...
  • Taken for less than 1 month
  • January 8, 2020

Fluorouracil topical for Actinic Keratosis "I had a very tiny split on the side of my nose that wouldn’t heal. It was BCC. It was surgically removed. One of the most horrible experiences, emotionally. I used Efudex a year ago for a spot that appeared on my chest. It worked well, although painful and itchy. I am now using it on my forehead, nose, and upper lip area. I was shocked at how many spots appeared! Extremely painful when touched, but otherwise just a little itchy on occasion. I am grateful for all the comments here... it gives me courage to keep going. Week 2..."

7 / 10
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59 Report
  • Phi...
  • Taken for less than 1 month
  • November 16, 2017

Fluorouracil topical for Skin Cancer "At 65 years old and a lifetime in the sun and numerous treatments including surgery, cryotherapy, etc., the doctor said I would have to use Efudex on my whole face as I had untold AKs plus Bowen's Disease. I was told it was a 'brutal' treatment. He was right. All I can say is that this treatment was the most painful experience of my life. By week two, I was in agony but forced myself to continue with the three-week treatment. A word of warning: under no circumstances get this stuff on your genitals. I did, and it was agonizing. The pain was so intense it sent me into depression for 3 months. Results were excellent, however, I have no regrets."

10 / 10
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69 Report
  • Rud...
  • December 20, 2019

Fluorouracil topical for Basal Cell Carcinoma "I was prescribed this cream to treat BCC on my nose. I had a red spot with suspected basal cell carcinoma. My dermatologist wanted me to treat my entire nose to get any spots that hadn't emerged yet. I put it on twice daily for two weeks. It took about a week for anything to happen, but then the spot turned red. Soon my entire nose turned pink. At day 14, my nose was red, with purple areas, blisters, and depressions. I had to put Vaseline on it to tolerate the pain. It felt like someone had burned my face with a hot iron. The skin was pulled taut, and I was afraid of scarring. It has been 8 weeks since the application stopped. It is still a little pink. Unfortunately, it did not get my spot, it is not superficial enough. The cream's redness lasts longer for me than I anticipated. It was an 8-week process for me, and I still have a pink nose. Hope it isn't permanent."

8 / 10
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51 Report
  • Red...
  • Taken for less than 1 month
  • January 20, 2015

For Keratosis "In week 3 of Efudex treatment and my skin is still raw and peeling, though less than at day 14. I applied it twice daily for two weeks; I personally could not have gone one more day past day 14. The first week was not too bad without much noticeable effect. Week 2 was a different story. My skin, especially on my lower forehead, nose, and cheek area adjacent to my nose, became extremely red and raw, like a severe sunburn. Also behind my ears and in the folds of my neck. I found it difficult both physically and mentally to apply more cream to those areas because of the pain. My doctor says everything looks excellent. Applying a prescribed cortisone cream now, but fading is very slow. Best I can offer is hang in there."

6 / 10
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82 Report
  • Hap...
  • Taken for less than 1 month
  • December 5, 2019

For Skin Cancer "I was advised to use this on my face, neck, chest area, legs, and arms. I started on my neck and chest area. Applied twice a day for 5 to 7 days. I was able to do 5 days but not able to touch the area any longer. On day 6, the entire area looked like I had a very, very bad chemical burn, and the pain was unbelievable. I’m tough and have been through a lot of surgeries. I can deal with pain. But this pain was beyond anything I ever experienced before. I tried using an Aquaphor spray to help. It felt like a blowtorch was being used on me. After the initial pain of application, I did not notice any relief. Not gonna use it anymore. The only relief I am getting, I’m on day 11 since first use, is warm Vaseline, heating it up with my hairdryer makes it a lot easier to apply painlessly. I will not be using it on any other part of my body. And I wish I had found this site prior to using it because I would not have used it."

1 / 10
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46 Report
  • Lin...
  • Taken for less than 1 month
  • September 26, 2020

Fluorouracil topical for Keratosis "I am a 70-year-old woman originally from Britain. Used Efudex on chin, side of nose, and cheek. Went up a little too close to the corner of my eye, which swelled up. I used it twice a day for 15 days, which was enough to bear. Big crusty scab on chin. Very sore, itchy, and burning. Can't do the other side of my nose as it's too painful."

10 / 10
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40 Report
  • Did...
  • Taken for less than 1 month
  • July 27, 2020

Fluorouracil topical for Skin Cancer "Being a white Aussie girl who loved being outside, my skin was a mess. I’m now 58. I’ve used Efudex several years ago with great success. Started again due to scaly patches on my face that never went away. These reacted instantly and then disappeared. After having a break, I started using it on pigmentations on my face. These too reacted, interestingly, I started getting reactions on places I didn’t put the cream. So I started putting the cream there too. My face is a mess, very itchy, sore. I certainly wouldn’t recommend using this on large areas at a time due to the uncomfortableness of the process. I know it will be worth it, so I will continue on. I have some lumps on my head, once my face is done, I will be doing my scalp."

9 / 10
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41 Report
  • Man...
  • Taken for less than 1 month
  • April 20, 2020

Fluorouracil topical for Basal Cell Carcinoma "I am up to my last day of treatment, day 21. I have treated my entire face once a day with Efudex and would never do it again. After the first couple of days, red spots start to appear, after a week, my face looked like a severe case of sunburn and felt like it. The intensity of the redness increased along with constant burning. By day 12, I was ready to give up but reminded myself I was over halfway. I didn't know how I could bear to apply more Efudex, but perseverance and willpower have been on my side. It is a painful experience, which I would only recommend as a last resort. Even today, I dread putting the cream on for the last time, but after that, I know each day will be a slow pace of healing. I look forward to the end result and hope all the discomfort is worth it."

4 / 10
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43 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.