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Table 10 Rates of adverse effects regardless of the severity and the rate of severe adverse effects for treatments perceived to be most effective.

From: Traditional and non-traditional treatments for autism spectrum disorder with seizures: an on-line survey

 

Number of Adverse Effects

Number of Severe Adverse Effects

Treatment

One

Two

Three

One

Two

Three

Valproic Acid

48%

25%

11%

15%

4%

5%

Lamotrigine

34%

19%

12%

16%

3%

1%

Levetiracetam

43%

19%

10%

16%

2%

3%

Ethosuximide

26%

7%

7%

7%

0%

4%

Ketogenic Diet

27%

13%

4%

8%

0%

2%

Atkin's Diet/Modified Atkin's Diet

15%

0%

0%

0%

0%

0%

Gluten-free Casein-free Diet

6%

2%

1%

3%

1%

0%

Hyperbaric Oxygen Therapy

10%

6%

4%

6%

0%

2%