Side effects of epilepsy medication

Most people are concerned with the potential side effects of drug treatments, particularly because they can affect the quality of life. Many anti-epileptic drugs can cause a wide range of possible side effects but this does not mean that everybody taking a particular drug will experience them. All medicines have potential side effects as well as benefits, and the effects of anti-epileptic drugs on people can vary greatly.

A few people reported no or minimal side effects. Several recalled how tiredness occurred at the start of treatment but later subsided when their bodies had adjusted to the drugs. Sleepiness, drowsiness or a lack of energy were also mentioned by many other people we interviewed.

Recalls his feelings of tiredness when first using anti-epileptic drugs.

Age at interview 43

Gender Male

Age at diagnosis 27

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Side effects sometimes occur when the dose of the drug being taken is too high for an individual. Some people said that high dosages of drugs left them feeling ‘zombified’, and so the dosage of the drug was reduced. One woman told us how her drug dosage was gradually changed because she was feeling tired and looking pale.

Explains how her drug dosage was altered because she felt tired and looked pale.

Age at interview 35

Gender Female

Age at diagnosis 1

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The effects of anti-epileptic drugs on speech – such as being unable to find the right words or slurred speech – were reported by some people. One person recalled having muscle jerks. Another discussed the hand tremors she’d had with one drug and poor concentration with another. One man discussed the effect of drugs on his gums.

Discusses the muscle jerks and speech problems she had with anti-epileptic drugs.

Age at interview 21

Gender Female

Age at diagnosis 11

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Recalls the hand tremors she had with one drug and poor concentration with another.

Age at interview 31

Gender Female

Age at diagnosis 25

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Weight gain was mentioned by several people we interviewed. One person felt it was acceptable as the drug controlled her seizures, but others found it problematic or unsatisfactory.

Explains that gaining weight was preferable to having seizures.

Age at interview 20

Gender Female

Age at diagnosis 14

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Explains how weight gain and other side-effects affected her.

Age at interview 18

Gender Female

Age at diagnosis 14

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Coping with side effects was difficult for some people because of the impact on their feelings, on work and on relationships. One woman described the impact of different drugs over the years. Another said that her feelings of depression and numbness led her to being weaned off medication. The severe side effects experienced by one woman led her to stop taking all her drugs for a time.

Discusses the impacts of different anti-epileptic drugs.

Age at interview 42

Gender Female

Age at diagnosis 6

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Explains why she came off all anti-epileptic drugs.

Age at interview 48

Gender Female

Age at diagnosis 10

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Describes the severe side effects she had with various anti-epileptic drugs.

Age at interview 53

Gender Female

Age at diagnosis 51

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Blurred vision, often at the start of taking some anti-epileptic drugs, was reported by some people. One woman described being weaned off lamotrigine because of its long-term effects on her vision. Several people reported being sensitive to a drug and having allergies such as skin rashes. The effects of anti-epileptic drugs on memory were also a common concern amongst people we spoke to.

Explains that she would like to come off a drug because of its effects on her vision.

Age at interview 28

Gender Female

Age at diagnosis 19

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Discusses the skin rash she had with an anti-epileptic drug.

Age at interview 30

Gender Female

Age at diagnosis 17

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Comments on the effects of anti-epileptic drugs on his memory.

Age at interview 32

Gender Male

Age at diagnosis 24

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Because anti-epileptic drugs affect different people in different ways, some people have no side effects while others may have several. However, anti-epileptic drugs should never be stopped without medical advice as seizures can occur without them (see ‘Taking and stopping medication for epilepsy’).

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