Vitamins that may be helpful
Vitamin E has been studied as a possible
add-on to conventional drug treatment for epilepsy. A double-blind trial found that adding 400
IU per day of vitamin E reduced seizure frequency in children without side
effects.22 Other preliminary trials23 24 have reported
similar results, and, while some preliminary research suggested this effect might also be
achieved in adults,25 a double-blind trial found no effect of vitamin E
supplementation on adults with epilepsy.26
Folic acid supplementation (5 mg per day)
was reported to reduce epileptic seizure frequency, though the effect was not significantly
better than with placebo.27 Folic acid supplementation of as little as 800 mcg per
day has also been reported to interfere with the action of anticonvulsant medications,
resulting in an increase in the frequency and/or severity of seizures;28
29 30 31 this effect occurs only in a small number of
cases.32 33 People taking
anticonvulsant medications should consult with the prescribing physician before deciding
whether to use folic acid.
Vitamin B6 has been used to treat infants
and small children who have seizures related to a genetic enzyme defect.34
35 36 37 However, this condition is not considered true epilepsy,
and whether people with epilepsy would benefit from taking vitamin B6 supplements is
unknown.
Taurine is an amino acid that is thought to play a role in the
electrical activity of the brain; deficits of taurine in the brain have been associated with
some types of epilepsy. However, while some short-term studies have suggested that taurine
supplementation may reduce epileptic seizures in some people, the effect appears to be only
temporary.38
Case reports have suggested that evening
primrose oil may worsen symptoms in people with temporal lobe epilepsy.39 Until
more is known, people with this type of epilepsy should avoid using evening primrose oil
supplements, except perhaps under the supervision of a qualified physician.
In a preliminary study, supplementation with 3.25 grams per day of a mixture of omega-3 fatty acids (primarily eicosapentaenoic acid
[EPA] and docosahexaenoic acid [DHA]) for six months markedly reduced the frequency of
seizures in five severely retarded epileptic patients.40 Additional research is
needed to confirm this report and to identify which people with epilepsy are most likely to
benefit.
A small, preliminary trial found that 5 to 10 mg per day of melatonin improved sleep and provided “clear
improvement of the seizure situation” among children with one of two rare seizure
disorders.41 More research is needed to determine whether or not melatonin could
benefit other people with epilepsy.
Two elderly individuals with well-controlled epilepsy reportedly developed recurrent
seizures within two weeks of starting Ginkgo biloba extract.42 Individuals with
epilepsy should not, therefore, take Ginkgo biloba without medical supervision.
Are there any side effects or interactions?
Refer to the individual supplement for information about any side effects or interactions.
1. Wilder RM. The effects of ketonemia on the course of epilepsy.
Mayo Clinic Proc 1921;2:307–8.
2. Prasad AN, Stafstrom CF, Holmes GL. Alternative epilepsy therapies:
the ketogenic diet, immunoglobulins, and steroids. Epilepsia 1996;37:S81–S95
[review].
3. Vining EP, Freemen JM, Ballaban-Gil K, et al. A multicenter study of
the efficacy of the ketogenic diet. Arch Neurol 1998;55:1433–7.
4. Freeman JM, Vining EP, Pillas DJ, et al. The efficacy of the ketogenic
diet-1998: a prospective evaluation of intervention in 150 children. Pediatrics
1998;102:1358–63.
5. Neelam GK, Koehler AN, McGhee B, et al. The ketogenic diet in
refractory epilepsy: the experience of Children’s Hospital of Pittsburgh. Clinical
Pediatrics 2000;39:153–9.
6. Barborka CJ. Results of treatment by ketogenic diet in one hundred
cases of epilepsy in adults. Assoc Res Nerv Ment Dis 1929;7:638–58.
7. Ballaban-Gil K, Callahan CM, O’Dell C, et al. The ketogenic diet
in the treatment of intractable epilepsy in adults. Epilepsy 1996;37:92
[abstract].
8. Ballaban-Gil K, Callahan CM, O’Dell C, et al. Complications of
the ketogenic diet. Epilepsia 1998;39:744–8.
9. Prasad AN, Stafstrom CF, Holmes GL. Alternative epilepsy therapies:
the ketogenic diet, immunoglobulins, and steroids. Epilepsia 1996;37:S81–95
[review].
10. Barron TF, Hunt SL. A review of the newer antiepileptic drugs and the
ketogenic diet. Clin Pediatr (Phila) 1997;36:513–21.
11. Freeman JM, Kelly MT, Freeman JB. The epilepsy diet
treatment. New York, NY: Demos, 1994.
12. Carroll J, Koenigsberger D. The ketogenic diet: a practical guide for
caregivers. J Am Diet Assoc 1998;98:316–21.
13. http://www-leland.stanford.edu/group/ketodiet
14. Kossoff EH, Krauss GL, McGrogan JR, Freeman JM. Efficacy of the
Atkins diet as therapy for intractable epilepsy. Neurology 2003;61:1789–91.
15. Stevens H. Allergy and epilepsy. Epilepsia
1965;6:205–16 [review].
16. Campbell M. Neurologic manifestations of allergic disease. Ann
Allergy 1973;31:485–98 [review].
17. Crayton JW, Stone T, Stein G. Epilepsy precipitated by food
sensitivity: report of a case with double-blind placebo-controlled assessment. Clin
Electroencephalogr 1981;12:192–8.
18. Cunningham AS. Allergy, immunodeficiency and epilepsy.
Lancet 1975;11:975 [letter].
19. Egger J, Carter CM, Soothill JF, Wilson J. Oligoantigenic diet
treatment of children with epilepsy and migraine. J Pediatr 1989;114:51–8.
20. Van Someren V, Robinson RO, McArdle B, Sturgeon N. Restricted diets
for treatment of migraine. J Pediatr 1990;117:509–10 [letter].
21. Crayton JW, Stone T, Stein G. Epilepsy precipitated by food
sensitivity: report of a case with double-blind placebo-controlled assessment. Clin
Electroencephalogr 1981;12:192–8.
22. Ogunmekan AO, Hwang PA. A randomized, double-blind,
placebo-controlled, clinical trial of D-alpha-tocopheryl acetate (vitamin E), as add-on
therapy, for epilepsy in children. Epilepsia 1989;30:84–9.
23. Hom AC, Weaver RC, Aldersen JJ. Efficacy of D-alpha tocopherol
acetate as adjunctive antiepileptic agent in patients with refractory epilepsy and profound
developmental disability. A prospective, randomized, double-blind, placebo-controlled trial.
Epilepsia 1991;32(suppl 3):63 [abstract].
24. Sullivan C, Capaldi N, Mack G, Buchanan N. Seizures and natural
vitamin E. Med J Aust 1990;152:613–4 [letter].
25. Tupeev IR, Kryzhanovskii GN, Nikushkin EV, et al. The antioxidant
system in the dynamic combined treatment of epilepsy patients with traditional anticonvulsant
preparations and an antioxidant—alpha-tocopherol. Biull Eksp Biol Med
1993;116:362–4 [in Russian].
26. Raju GB, Behari M, Prasad K, Ahuja GK. Randomized, double-blind,
placebo-controlled, clinical trial of D-alpha-tocopherol (vitamin E) as add-on therapy in
uncontrolled epilepsy. Epilepsia 1994;35:368–72.
27. Gibberd FB, Nicholls A, Wright MG. The influence of folic acid on the
frequency of epileptic attacks. Eur J Clin Pharmacol 1981;19:57–60.
28. Guidolin L, Vignoli A, Canger R. Worsening in seizure frequency and
severity in relation to folic acid administration. Eur J Neurol
1998;5:301–3.
29. Lewis DP, Van Dyke DC, Willhite LA. Phenytoin-folic acid interaction.
Ann Pharmacother 1995;29:726–35 [review].
30. Berg MJ, Rivey MP, Vern BA, et al. Phenytoin and folic acid:
individualized drug-drug interaction. Ther Drug Monit 1983;5:395–9.
31. Reynolds EH. Effects of folic acid on the mental state and fit
frequency of drug treated epileptic patients. Lancet 1967;1:1086.
32. Eros E, Geher P, Gomor B, et al. Epileptogenic activity of folic acid
after drug induces SLE (folic acid and epilepsy). Eur J Obstet Gynecol Reprod Biol
1998;80:75–8.
33. Ueda S, Shirakawa T, Nakazawa Y, et al. Epilepsy and folic acid.
Folia Psychiatr Neurol Jpn 1977;31:327–37.
34. Bankier A, Turner M, Hopkins IJ. Pyridoxine dependent
seizures—a wider clinical spectrum. Arch Dis Child 1983;58:415–8.
35. Baxter P, Griffiths P, Kelly T, et al. Pyridoxine-dependent seizures:
demographic, clinical, MRI and psychometric features, and effect of dose on intelligence
quotient. Develop Med Child Neurol 1996;38:998–1006.
36. Jiao FY, Gao DY, Takuma Y, et al. Randomized, controlled trial of
high-dose intravenous pyridoxine in the treatment of recurrent seizures in children.
Pediatr Neurol 1997;17:54–7.
37. Goutieres F, Aicardi J. Atypical presentation of pyridoxine-dependent
seizures: a treatable cause of intractable epilepsy in infants. Ann Neurol
1985;17:117–20.
38. Durelli L, Mutani R. The current status of taurine in epilepsy.
Clin Neuropharmacol 1983;6:37–48.
39. Vaddadi KS. The use of gamma-linolenic acid and linoleic acid to
differentiate between temporal lobe epilepsy and schizophrenia. Prostaglandins Med
1981;6:375–9.
40. Schlanger S, Shinitzky M, Yam D. Diet enriched with omega-3 fatty
acids alleviates convulsion symptoms in epilepsy patients. Epilepsia
2002;43:103–104.
41. Fauteck J, Schmidt H, Lerchl A, et al. Melatonin in epilepsy: first
results of replacement therapy and first clinical results. Biol Signals Recept
1999;8:105–10.
42. Granger AS. Ginkgo biloba precipitating epileptic seizures. Age
Ageing 2001;30:523–5.
43. Yarnell EY, Abascal K. An herbal formula for treating intractable
epilepsy: a review of the literature. Alt Compl Ther 2000;6:203–6 [review].
44. Narita Y, Satowa H, Kokubu T, et al. Treatment of epileptic patients
with the Chinese herbal medicine “saiko-keishi-to” (SK). IRCS Med Sci
1982;10:88–9.
45. Nagakubo S, Niwa S-I, Kumagai N, et al. Effects of TJ-960 on
Sternberg’s paradigm results in epileptic patients. Jpn J Psych Neur
1993;47:609–19.
46. Mukherjee GD, Dey CD. Comparative study on the anti-epileptic action
of some common phyto-products. J Exp Med Sci 1968;11:82–5.
47. Mukherjee GD, Dey CD. Clinical trial on Brahmi. J Exp Med
Sci 1966;10:5–11.