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Phenytoin for Anxiety User Reviews

Brand names: Dilantin, Phenytoin Sodium, Phenytoin Sodium, Extended Release, Phenytek, Di-Phen

Rating: 9.5

Phenytoin has an average rating of 9.5 out of 10 from a total of 8 reviews for the off-label treatment of anxiety. 88% of reviewers reported a positive experience, while 0% reported a negative experience.

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  • No ...
  • Taken for less than 1 month
  • March 19, 2023

"I have been under chronic stress for three years, and I had become increasingly nonfunctional with anxiety and lack of focus, with seemingly no way to “turn off” my stress response. I was easily triggered into extreme overwhelm states. Since taking Phenytoin, the last four days, I immediately felt the effects and I have not been stressed out at all for four days. I have not felt this good in three years. I can focus and I actually feel happy. Granted I only just started it, but have had no side effects."

10 / 10
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12 Report
  • Fra...
  • March 25, 2010

Phenytoin "My doctor prescribed Dilantin for anxiety and depression. It seems to work just about 60 to 70% of the time for both conditions. Other times I can't really tell the difference. I use 1 or 2 - 100 mg capsule(s) a day or only as needed. I like that it is not habit-forming and tolerance is not built up. Side effects need to be looked at, although I don't experience any serious adverse effects. Extra vitamin B-12 and folic acid need to be taken while taking Dilantin because it may cause a deficiency with these nutrients."

7 / 10
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42 Report
  • Mea...
  • Taken for 6 months to 1 year
  • August 2, 2020

"I first learned about Dilantin for anxiety and depression in the book, A Remarkable Medicine Has Been Overlooked. It worked for me, and I could feel the results in 45 minutes, just as reported in the above-mentioned book. It's an old, tried and true medication, and I would recommend that you try it if you have anxiety or depression."

10 / 10
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13 Report

Frequently asked questions

  • Anonymous
  • Taken for 1 to 6 months
  • December 25, 2024

"I could barely go outside without having panic attacks, and now my anxiety has gone down about 90%."

10 / 10
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6 Report
  • Mic...
  • Taken for 6 months to 1 year
  • March 13, 2024

"I started with 50 mg per day for two weeks and then 100 mg once in the morning. Amazing drug! No more panic attacks and wonderful for anxiety. Also, I experienced vivid dreams."

10 / 10
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10 Report

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  • Mar...
  • Taken for 1 to 6 months
  • September 30, 2024

"My doctor advised trying this medicine after a bad experience with antidepressants. Good treatment for anxiety, personally, I don't have any side effects with 100 mg in the morning so far."

9 / 10
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5 Report
  • Anonymous
  • August 10, 2008

Phenytoin "I use 100 mg once a day to control anxiety. It works well. People at work have noticed I am much calmer at work."

10 / 10
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44 Report
  • Ano...
  • Taken for 2 to 5 years
  • April 25, 2025

"Been on this for a few years, taking 2 pills 3 times a day. It's been a life changer! My anxiety level has decreased. Finally living a happy life."

10 / 10
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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.

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