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Phenytoin

More information: STITCH, PubChem and possibly Wikipedia

ATC Code: N03AB02

Side effects

Options: Hide MedDRA Preferred Terms ,   display all 25 labels

MedDRA Preferred Term Side effect Data for drug Placebo Labels
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Nystagmus Nystagmus 8.2% - 59.1% x x x x x x x x x x x x x x x x x x x x
Somnolence Somnolence 6.7% - 27.3% x x x x x x x x x x x x x
Drowsiness x
Tremor Tremor 3.3% - 13.1% x x x x x x x x x x x x x x x x x x x x
Trembling x
Tinnitus Tinnitus 8.9% - 9.1% x x x
Ataxia Ataxia 8.2% - 18.2% x x x x x x x x x x x x x x x x x x x x
Hypotension Hypotension 0.3% - 9.1% x x x x x x x x
Ecchymosis Ecchymosis 4.9% - 7.3% x x x
Stupor Stupor 4.5% - 7.7% x x x
Depressed level of consciousness Stupor 4.5% - 7.7% x x x
CNS depression NOS infrequent x x x x
Amblyopia Amblyopia 2.2% - 9.1% x x x x
Infection Infection frequent x x x
Constipation Constipation frequent x x x x x x x x x x x x x x x x x x x x
Dizziness Dizziness 3.3% - 31.1% x x x x x x x x x x x x x x x x x x x x
Syncope infrequent x x x
Dermatitis Rash frequent x x x x x x x x x x x x x x x x x x x x
Dermatitis x x x x x x x x x x x x x x
Rash Rash frequent x x x x x x x x x x x x x x x x x x x x
Body temperature increased Body temperature increased frequent x x x x x x x x x x x x x x x x x x x x
Hypertension Hypertension frequent x x x
Hypoaesthesia Hypoaesthesia frequent, 2.2% - 9.1% x x x
Hypokalaemia Hypokalaemia frequent x x x
Nervousness Nervousness frequent x x x x x x x x x x x x x x x x x x x x
Tension Nervousness frequent x x x x x x x x x x x x x x x x x x x x
Pneumonia Pneumonia frequent x x x
Speech disorder Speech disorder frequent x x x
Chills Chills frequent x x x
Injection site reaction Injection site reaction frequent x x x
Injury Accidental injury 3.4% - 6.6% x x x
Intracranial pressure increased Intracranial pressure increased frequent x x x
Injection site pain Injection site pain frequent x x x
Hyperreflexia Hyperreflexia frequent x x x
Thinking abnormal Thinking abnormal frequent x x x
Mental disability Thinking abnormal frequent x x x
Face oedema Face oedema frequent x x x
Muscular weakness Myasthenia frequent x x x
Headache Headache 2.2% - 8.9% x x x x x x x x x x x x x x x x x x x x
Coordination abnormal Coordination abnormal 4.4% - 7.8% x x x
Nausea Nausea 0% - 13.6% x x x x x x x x x x x x x x x x x x x
Dry mouth Dry mouth 4.4% - 4.5% x x x
Hyporeflexia Hyporeflexia 2.8% - 4.9% x x x
Paraesthesia Paraesthesia 0% - 4.4% x x x x x x x x x x x x x
Tingling sensation x x x
Asthenia Asthenia 0% - 3.9% x x x x
Fatigue x
Dysgeusia Dysgeusia frequent, 0% - 3.3% x x x x x x x x
Taste metallic x x x x x
Taste altered x x x x x
Pruritus Pruritus 0% - 48.9% x x x
Vomiting Vomiting 0% - 9.1% x x x x x x x x x x x x x x x x x x x x
Dysarthria Dysarthria frequent, 0% - 2.2% x x x
Slurred speech x x x x x x x x x x x x x x x x x
Osteoarthritis Dysarthria frequent, 0% - 2.2% x x x
Pelvic pain Pelvic pain 0% - 4.4% x x x
Tongue disorder Tongue disorder 0% - 4.4% x x x
Tongue oedema infrequent x x x
Brain oedema Brain oedema infrequent, 2.2% - 4.5% x x x
Diplopia Diplopia 0% - 3.3% x x x
Agitation Agitation 0% - 3.3% x x x
Hyperkinesia infrequent x x x
Excitement x
Back pain Back pain 0% - 2.2% x x x
Tachycardia Tachycardia 0% - 2.2% x x x
Vertigo Vertigo 0% - 2.2% x x x x x x x x x
Acidosis Acidosis infrequent x x x
Albuminuria Albuminuria infrequent x x x
Alkalosis Alkalosis infrequent x x x
Amnesia Amnesia infrequent x x x
Anaemia Anaemia infrequent x x x
Hypochromic anaemia Hypochromic anaemia infrequent x x x
Decreased appetite Anorexia infrequent x x x x
Appetite absent x
Aphasia Aphasia infrequent x x x
Apnoea Apnoea infrequent x x x
Arthralgia Arthralgia infrequent x x x x x x x x x x x x
Musculoskeletal discomfort Arthralgia infrequent x x x x x x x x x x x x
Myalgia infrequent x x x
Asthma Asthma infrequent x x x
Atelectasis Atelectasis infrequent x x x
Pneumothorax Atelectasis infrequent x x x
Pneumothorax infrequent x x x
Atrial flutter Atrial flutter infrequent x x x
Bronchitis Bronchitis infrequent x x x
Bundle branch block Bundle branch block infrequent x x x
Cachexia Cachexia infrequent x x x
Vulvovaginal candidiasis Vaginal moniliasis infrequent x x x
Vulvovaginal mycotic infection Vaginal moniliasis infrequent x x x
Cerebral infarction Cerebral infarction infrequent x x x
Coma Coma infrequent x x x
Confusional state Confusional state infrequent x x x x x x x x x x x x x x x x x x x x
Feeling abnormal Confusional state infrequent x x x x x x x x x x x x x x x x x x x x
Malaise infrequent x x x
Conjunctivitis Conjunctivitis infrequent x x x
Cryptococcosis Cryptococcosis infrequent x x x
Cyanosis Cyanosis infrequent x x x
Deafness Deafness infrequent, 0% - 2.2% x x x
Dysphagia Dysphagia infrequent x x x x
Dehydration Dehydration infrequent x x x
Delirium Delirium infrequent x x x
Depersonalisation Depersonalisation infrequent x x x
Dermatitis contact Dermatitis contact infrequent x x x
Diabetes insipidus Diabetes insipidus infrequent x x x
Diarrhoea Diarrhoea infrequent x x x
Dyspepsia Dyspepsia infrequent x x x
Dyspnoea Dyspnoea infrequent x x x
Dysuria Dysuria infrequent x x x
Ear pain Ear pain infrequent x x x
Encephalitis Encephalitis infrequent x x x
Epistaxis Epistaxis infrequent x x x
Extrapyramidal disorder Extrapyramidal disorder infrequent, 0% - 4.4% x x x
Flatulence Flatulence infrequent x x x
Gastritis Gastritis infrequent x x x
Gastrointestinal haemorrhage Gastrointestinal haemorrhage infrequent x x x
Cardiac arrest Cardiac arrest infrequent x x x
Cardiomegaly Cardiomegaly infrequent x x x
Cardiac failure congestive Cardiac failure congestive infrequent x x x
Subdural haematoma Subdural haematoma infrequent x x x
Hemiplegia Hemiplegia infrequent x x x
Haemoptysis Haemoptysis infrequent x x x
Hostility Hostility infrequent x x x
Hyperaesthesia Hyperaesthesia infrequent x x x
Hyperglycaemia Hyperglycaemia infrequent x x x
Hyperkalaemia Hyperkalaemia infrequent x x x
Hyperventilation Hyperventilation infrequent x x x
Orthostatic hypotension Orthostatic hypotension infrequent x x x
Influenza Influenza infrequent x x x
Ketosis Ketosis infrequent x x x
Muscle spasms Cramps of lower extremities infrequent x x x
Leukocytosis Leukocytosis infrequent x x x
Leukopenia Leukopenia infrequent x x x x x x x x x x x x x x x x x x x
Meningitis Meningitis infrequent x x x
Hypotonia Hypotonia infrequent x x x
Muscle relaxant therapy Hypotonia infrequent x x x
Myopathy Myopathy infrequent x x x
Mydriasis Mydriasis infrequent x x x
Myoclonus Myoclonus infrequent x x x
Neurosis Neurosis infrequent x x x
Oliguria Oliguria infrequent x x x
Palpitations Palpitations infrequent x x x
Personality disorder Personality disorder infrequent x x x
Petechiae Petechiae infrequent x x x
Pharyngitis Pharyngitis infrequent x x x
Pneumonia aspiration Pneumonia aspiration infrequent x x x
Polyuria Polyuria infrequent x x x
Urine output increased Polyuria infrequent x x x
Psychotic disorder Psychotic disorder infrequent x x x
Pulmonary embolism Pulmonary embolism infrequent x x x
Hyperacusis Hyperacusis infrequent x x x
Extensor plantar response Extensor plantar response infrequent x x x
Renal failure Renal failure infrequent x x x
Rhinitis Rhinitis infrequent x x x
Scotoma Scotoma infrequent x x x
Convulsion Convulsion infrequent x
Shock Shock infrequent x x x x x x x x
Syncope infrequent x x x
Salivary hypersecretion Salivary hypersecretion infrequent x x x
Sinusitis Sinusitis infrequent x x x
Skin mass Skin nodule infrequent x x x
Hyperhidrosis Sweating infrequent x x x
Syncope Syncope infrequent x x x
Loss of consciousness Syncope infrequent x x x
Thrombocytopenia Thrombocytopenia infrequent x x x x x x x x x x x x x x x x x x x x
Thrombophlebitis Thrombophlebitis infrequent x x x
Urinary incontinence Urinary incontinence infrequent x x x
Urticaria Urticaria infrequent x x x
Vaginal inflammation Vaginal inflammation infrequent x x x
Vaginal infection Vaginal inflammation infrequent x x x
Urinary retention Urinary retention infrequent x x x
Encephalopathy Encephalopathy infrequent x x x
Sinus bradycardia Sinus bradycardia infrequent x x x
Mood swings Mood swings infrequent x x x
Affect lability Mood swings infrequent x x x
Photophobia Photophobia infrequent x x x
Rash pustular Rash pustular infrequent x x x
Hypophosphataemia Hypophosphataemia infrequent x x x x x x x
Hypokinesia Hypokinesia infrequent x x x
Migraine Migraine infrequent x x x
Generalised oedema Generalised oedema infrequent x x x
Fluid retention Generalised oedema infrequent x x x
Oedema genital Oedema genital infrequent x x x
Injection site swelling Injection site swelling infrequent x x x
Tongue oedema Tongue oedema infrequent x x x
Ventricular extrasystoles Ventricular extrasystoles infrequent x x x
Injection site haemorrhage Injection site haemorrhage infrequent x x x
Injection site inflammation Injection site inflammation infrequent x x x
Liver function test abnormal Liver function test abnormal infrequent x x x
Eye pain Eye pain infrequent x x x
Urethral pain Urethral pain infrequent x x x
Paraesthesia oral Circumoral paresthesia infrequent x x x
Skin discolouration Skin discolouration infrequent x x x
Photosensitivity reaction Photosensitivity reaction infrequent x x x
Malaise Malaise infrequent x x x
Discomfort Malaise infrequent x x x
Discomfort x x x
Ill-defined disorder Malaise infrequent x x x
Myalgia Myalgia infrequent x x x
Muscle twitching Muscle twitching infrequent x x x
Proctalgia Rectal tenesmus infrequent x x x
Rectal tenesmus Rectal tenesmus infrequent x x x
Anorectal discomfort Rectal tenesmus infrequent x x x
Sputum increased Sputum increased infrequent x x x
Increased bronchial secretion Sputum increased infrequent x x x
Sepsis Sepsis infrequent x x x
Akathisia Akathisia infrequent x x x
Rash maculo-papular Rash maculo-papular infrequent x x x
Hyperkinesia Hyperkinesia infrequent x x x
Lymphadenopathy Lymphadenopathy infrequent x x x x x x x x x x x x x x x x x x x x
Paralysis Paralysis infrequent x x x
Cough Cough increased infrequent x x x
Insomnia Insomnia infrequent x x x x x x x x x x x x x x x x x x x x
Ileus Ileus infrequent x x x
Parosmia Parosmia infrequent x x x
Ageusia Ageusia infrequent x x x x
Cerebral haemorrhage Cerebral haemorrhage infrequent x x x
Bradycardia Bradycardia 0.2% x x x
Anaphylactic shock Anaphylactic shock postmarketing x x x x x x x x x x
Anaphylactoid reaction postmarketing x x x x x
Dyskinesia Dyskinesia postmarketing x x x x x x x x x x x x x x x x x x
Anaphylactoid reaction Anaphylactoid reaction postmarketing x x x x x
Agranulocytosis Agranulocytosis x x x x x x x x x x x x x x x x x
Anaemia megaloblastic Anaemia megaloblastic x x x x x x x x x x x x x x x x x
Breast disorder Breast disorder x
Chorea Chorea x x x x x x x x x x x x x x x x x
Connective tissue disorder Connective tissue disorder x
Drug eruption Drug eruption x
Dupuytren's contracture Dupuytren's contracture x
Eosinophilia Eosinophilia x x x x x x x x x
Toxic epidermal necrolysis Toxic epidermal necrolysis x x x x x x x x x x x x x x
Extravasation Extravasation x x x x x
Fatigue Fatigue x
Fibrosis Fibrosis x
Multiple fractures Fracture x x x x x
Fracture Fracture x x x x x
Gastrointestinal disorder Gastrointestinal disorder x
Gingival hyperplasia Gingival hyperplasia x x x x x x x x x x x x x x x x
Gingivitis Gingivitis x
Gynaecomastia Gynaecomastia x
Haemorrhage Haemorrhage x
Haemoglobin Haemorrhage x
Hepatitis toxic Hepatitis toxic x x x x x x x x x x x x x x x x x
Hirsutism Hirsutism x x x
Hodgkin's disease Hodgkin's disease x x x x x x x x x x x x x x x x
Hodgkin's disease lymphocyte depletion type stage unspecified Hodgkin's disease x x x x x x x x x x x x x x x x
Hodgkin's disease lymphocyte predominance type stage unspecified Hodgkin's disease x x x x x x x x x x x x x x x x
Hyperplasia Hyperplasia x x x x x x x x x x x x x x x
Hypersensitivity Hypersensitivity x x x x x x x x x x
Hypertrichosis Hypertrichosis x x x x x x x x x x x x x x x x
Hypocalcaemia Hypocalcaemia x x x x
Immune system disorder Immune system disorder x
Inflammation Inflammation x x x x x
Irritability Irritability x
Systemic lupus erythematosus Systemic lupus erythematosus x x x x x x x x x x x x x x x x
Lupus erythematosus x x x x x x x x x
Lymphoma Lymphoma x x x x x x x x x x x x x x x x
Non-Hodgkin's lymphoma Lymphoma x x x x x x x x x x x x x x x x
Measles Measles x x x x x x x x x x x x
Necrosis Necrosis x x x x x
Tubulointerstitial nephritis Nephritis interstitial x
Nervous system disorder Nervous system disorder x
Osteomalacia Osteomalacia x x x x x
Osteoporosis Osteoporosis x x x x
Pancytopenia Pancytopenia x x x x x x x x x x x x x x x x
Peyronie's disease Peyronie's disease x x x x x x x x x x x x x x x x
Polyarteritis nodosa Polyarteritis nodosa x x x x x x x x x x x x x x x
Erythema multiforme Stevens-Johnson syndrome x x x x x x x x x x x x x x x
Stevens-Johnson syndrome Stevens-Johnson syndrome x x x x x x x x x x x x x x x
Dysphemia Stuttering x
Ventricular fibrillation Ventricular fibrillation x x x x
Weight decreased Weight decreased x
Hepatic function abnormal Hepatic function abnormal x x x x x x x x x
Hepatocellular injury Hepatocellular injury x x x x x x x x x x x x x x x x x
Liver injury Hepatocellular injury x x x x x x x x x x x x x x x x x
Liver injury x x
Purpura Purpuric rash x x x x x x x x x x x x x x x
Polyneuropathy Polyneuropathy x x x x x x x x x x x x x x x x x
Traumatic liver injury Liver injury x x
Acute hepatic failure Acute hepatic failure x x x x x
Hypopnoea Shallow breathing x
Pseudolymphoma Pseudolymphoma x x x x x x x x x x x x x x x x
Abdominal pain upper Epigastric pain x
Asterixis Asterixis x x x x x x x x x x x x x x x x x
Tenderness Tenderness x x x x x
Rash morbilliform Rash morbilliform x x x x x x x x x x x x x
Hepatotoxicity Hepatotoxicity x
Chest pain Chest discomfort x
Chest discomfort Chest discomfort x
Lung infiltration Lung infiltration x
Hepatobiliary disease Hepatobiliary disease x
Tonic convulsion Tonic convulsion x
Cognitive disorder Cognitive impairment x
Epigastric discomfort Gastric irritation x x
Drug reaction with eosinophilia and systemic symptoms Hypersensitive syndrome x x x x x x x x x
Purple glove syndrome Purple glove syndrome

Indications

Information about indications was extracted from the indications and usage sections of the labels.

PHENYTOIN

Side effects:39
Source:FDA Structured Product Label

Phenytoin

Side effects:46
Source:FDA Structured Product Label

PHENYTOIN / TARO-PHENYTOIN

Side effects:47
Source:Health Canada

PHENYTOIN SODIUM / DILANTIN - 30MG

Side effects:47
Source:Health Canada

PHENYTOIN

Side effects:47
Source:FDA Structured Product Label

Phenytoin

Side effects:48
Source:FDA Structured Product Label

PHENYTOIN

Side effects:48
Source:FDA Structured Product Label

Phenytoin

Side effects:48
Source:FDA Structured Product Label

PHENYTOIN

Side effects:49
Source:FDA Structured Product Label

PHENYTOIN

Side effects:49
Source:FDA Structured Product Label

PHENYTOIN

Side effects:54
Source:FDA Structured Product Label

PHENYTOIN

Side effects:56
Source:FDA Structured Product Label

Phenytoin

Side effects:56
Source:FDA Structured Product Label

PHENYTOIN

Side effects:181
Source:FDA Structured Product Label

phenytoin

Side effects:182
Source:FDA Structured Product Label

PHENYTOIN

Side effects:184
Source:FDA Structured Product Label

Color scheme:

standard – alternative

    100%
    75%
    50%
    10%
    frequent (1% to 100%)
    infrequent (0.1% to 1%)
    rare (<0.1%)
    postmarketing
    0%
    no frequency information
    not found on label