Topiramate (All indications) updated on 06-15-2026

Table   Graphic     exposition period:

Congenital malformations
Adverse outcome OR 95%CII2k No. casesNo. exposedpublication biasROBE-value
All congenital malformations (majors, minors, majors and minors, or unspecified)2.13 [1.63, 2.80]15%14 studies231,4101,506low ROB3.69 [2.64; .]
Major congenital malformations2.13 [1.63, 2.80]15%14 studies231,4101,506low ROB3.69 [2.64; .]
Oro-facial clefts3.15 [2.12, 4.69]0%8 studies2,8614,639not evaluable ROB5.76 [3.66; .]
Congenital heart defects1.61 [0.85, 3.02]0%6 studies36592not evaluable ROB-
Cleft lip with or without cleft palate3.95 [2.07, 7.54]0%5 studies6,6112,826not evaluable ROB7.37 [3.56; .]
Microcephaly / Small head circumference for gestational age3.47 [1.11, 10.84]81%4 studies155,4861,710not evaluable ROB6.40 [1.47; .]
Limb defects3.53 [1.09, 11.44]0%4 studies581not evaluable ROB6.51 [1.39; .]
Spina bifida2.34 [0.73, 7.50]0%3 studies6,1241,072not evaluable ROB-
Cleft palate1.90 [0.59, 6.14]0%3 studies4,2722,769not evaluable ROB-
Hypospadias4.03 [1.56, 10.45]0%4 studies3,3901,056not evaluable ROB7.53 [2.49; .]
Neural Tube Defects3.21 [0.62, 16.76]0%4 studies4583not evaluable ROB-
Atrial septal defect1.31 [0.89, 1.94]0%2 studies84,5501,024not evaluable ROB-
Club foot / Talipes equinovarus2.58 [1.30, 5.14]0%2 studies20,0591,024not evaluable ROB4.61 [1.92; .]
Tetralogy of Fallot6.10 [1.67, 22.27]0%2 studies1,7831,024not evaluable ROB11.67 [2.73; .]
Ventricular septal defect1.19 [0.54, 2.63]0%2 studies25,6411,024not evaluable ROB-
Digestive system anomalies6.26 [0.69, 56.84]0%2 studies437not evaluable ROB-
Urinary malformations1.68 [0.22, 13.11]0%2 studies14161not evaluable ROB-
Bilateral renal agenesis including Potter syndrome24.05 [1.49, 388.57]-1 study75517not evaluable ROB47.59 [2.34; .]
Bladder exstrophy and/or epispadia22.01 [1.36, 355.32]-1 study82517not evaluable ROB43.51 [2.07; .]
Ebstein's anomaly35.96 [2.22, 583.57]-1 study50517not evaluable ROB71.41 [3.86; .]
Hypoplastic right heart (HRH/HRHS)27.30 [1.69, 441.71]-1 study66517not evaluable ROB54.10 [2.77; .]
12 non statistically significant endpoints reported in only one study

Growth parameters and prematurity
Adverse outcome OR 95%CII2k No. casesNo. exposedpublication biasROBE-value
Preterm (< 37 weeks)1.05 [0.80, 1.36]59%7 studies289,4903,721not evaluable ROB-
Small for gestational age (weight)1.60 [1.11, 2.32]86%6 studies655,9403,839not evaluable ROB2.58 [1.45; .]
Low birth weight (< 2500g)1.42 [1.11, 1.81]24%4 studies263,9341,853not evaluable ROB2.18 [1.45; .]
Very preterm (28 to 32 weeks)2.53 [1.13, 5.65]-1 study8,590477not evaluable ROB4.49 [1.51; .]
2 non statistically significant endpoints reported in only one study

Maternal consequences
Adverse outcome OR 95%CII2k No. casesNo. exposedpublication biasROBE-value
5 non statistically significant endpoints reported in only one study

Neonatal disorders
Adverse outcome OR 95%CII2k No. casesNo. exposedpublication biasROBE-value
Neonatal medical care1.15 [0.51, 2.62]11%2 studies44,809393not evaluable ROB-
3 non statistically significant endpoints reported in only one study

Long term consequences
Adverse outcome OR 95%CII2k No. casesNo. exposedpublication biasROBE-value
1 non statistically significant endpoints reported in only one study

Intrauterine deaths
Adverse outcome OR 95%CII2k No. casesNo. exposedpublication biasROBE-value
Intrauterine deaths (as a whole or unspecified)4.84 [0.85, 27.69]68%5 studies1,027455not evaluable ROB-
Late intrauterine deaths (> 22 weeks) / Stillbirths15.37 [0.63, 376.77]0%2 studies3not evaluable ROB-
Early intrauterine deaths (< 22 weeks) / Spontaneous abortions8.47 [0.57, 125.19]0%2 studies34not evaluable ROB-
Elective/induced termination of pregnancy1.65 [1.22, 2.23]-1 study712365not evaluable ROB2.69 [1.74; .]

Neuro-developmental disorders
Adverse outcome OR 95%CII2k No. casesNo. exposedpublication biasROBE-value
ASD (Autism spectrum disorder): Diagnosis/Risk1.22 [0.79, 1.89]28%7 studies73,5102,334not evaluable ROB-
Language disorders/delay1.56 [1.02, 2.37]61%8 studies72,8071,674not evaluable ROB2.49 [1.17; .]
ASD (Autism spectrum disorder): Diagnosis1.19 [0.74, 1.93]39%6 studies73,4822,328not evaluable ROB-
ADHD (Attention deficit hyperactivity disorder): Diagnosis/Risk1.25 [0.82, 1.89]53%7 studies160,4301,732not evaluable ROB-
Cognitive developmental disorders/delay (3-6 years old)2.24 [1.30, 3.86]4%5 studies3,5452,072not evaluable ROB3.90 [1.92; .]
ADHD (Attention deficit hyperactivity disorder): Diagnosis1.21 [0.73, 2.01]68%4 studies148,5891,669not evaluable ROB-
Severe cognitive developmental delay (Mental retardation) (3-6 years old)1.85 [1.06, 3.24]0%4 studies3,5452,063not evaluable ROB3.11 [1.31; .]
Cognitive developmental disorders/delay (> 6 years old)2.71 [1.63, 4.52]0%4 studies24,525592not evaluable ROB4.87 [2.64; .]
Psychomotor developmental disorders/delay1.48 [0.66, 3.29]63%5 studies441,167not evaluable ROB-
Neuro-developmental disorders (as a whole)1.49 [0.94, 2.35]0%3 studies10,474950not evaluable ROB-
Severe cognitive developmental delay (Mental retardation) (> 6 years old)2.33 [1.31, 4.14]0%2 studies24,519554not evaluable ROB4.09 [1.95; .]
ADHD (Attention deficit hyperactivity disorder): Risk1.41 [0.46, 4.32]39%3 studies11,84163not evaluable ROB-
ASD (Autism spectrum disorder): Risk2.65 [0.36, 19.38]0%2 studies287not evaluable ROB-
Learning disorders 2.11 [0.15, 29.13]84%2 studies970not evaluable ROB-
1 non statistically significant endpoints reported in only one study

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