EpilepsyRx

Potassium bromide

Kaliumbromid DESITIN (Germany)

Seizure aggravation / coverage
The German label states that bromide is ineffective for absence, myoclonic and tonic seizures and may provoke these seizures. The Dravet syndrome listing concerns tonic-clonic seizures.

Antiseizure indications · Germany product label

Indication / use

Label / evidence summary
No US antiseizure indication. Germany: Kaliumbromid DESITIN is labeled for primary and secondary generalized tonic-clonic seizures in early-childhood grand mal epilepsy and severe childhood myoclonic syndromes, including Dravet syndrome, especially when other antiseizure medicines are insufficient.
Role
Maintenance · Germany label
Class
Bromide salt

No US antiseizure indication. Germany national product labeling is summarized here; this is not an EU-wide authorization. Other countries and products may have different indications.

Formulations & strengths

Germany product label; strengths per dosage unit.

Brand & formulation labels

Each link names the product and formulation it covers. Archived labels do not establish current availability.

Dosing & administration

Adult / product-specific schedule
German label: 30–50 mg/kg/day when childhood epilepsy persists and treatment continues into adulthood; maximum 4,000 mg/day. This is not a general adult-onset epilepsy indication.
Pediatric
German maintenance schedule: 0.5–3 years / 7–15 kg, 50–70 mg/kg/day; 4–8 years / 16–28 kg and 9–15 years / 29–58 kg, 40–60 mg/kg/day. Maximum 4,000 mg/day; divide into 2–3 doses. These dosing bands are not approved age limits.
Titration / repeat dosing
Specialist supervision and serum bromide measurements are essential. Infection, dehydration or altered salt intake may require dose adjustment; consult the label’s illness instructions.
Dose basis
Germany product label; not a US dosing recommendation.

Practical administration

Product instructions
850 mg scored tablets, after meals with liquid; may be dispersed in lukewarm water or tea.

Dose adjustment & concentrations

Renal impairment
Contraindicated in renal insufficiency; assess renal function and electrolytes before treatment.
Hepatic impairment
No numeric adjustment schedule is provided in the cited label.
Serum reference information
Targets depend on the assay. X-ray fluorescence and photometric results are not interchangeable; use the method-specific ranges in the label. Check at least every four weeks for the first three months, then at least every three months.

Safety

Boxed warning
No US approved human label; consult the linked national label for serious precautions.
Contraindications
Renal insufficiency, pregnancy, breastfeeding, bromide intolerance or product hypersensitivity. The label also advises against use with asthma or malnutrition.
Serious precautions & monitoring
Accumulation can cause bromism with cognitive or motor impairment. Monitor skin toxicity, respiratory secretions, potassium and fluid / salt balance.

Common / selected adverse effects

  • Sedation / cognitive slowing
  • Ataxia
  • Gastrointestinal irritation
  • Bromacne / bromoderma
  • Respiratory secretions

Selected label-reported effects; frequencies cannot be compared across drugs.

Drug interactions: toxicity & clinical action

Partner / combinationClinical effectClinical action
Salt intake / dehydrationChanges can alter bromide clearance and accumulation.Maintain appropriate hydration and consistent salt intake; review serum levels.
Saluretic diureticsCan increase bromide elimination.Review concentrations and seizure control.
Other sedating medicinesMay increase CNS impairment.Review combined effects and tolerability.

Selected interactions; consult the full product label.

Pregnancy & contraception

Fetal / neonatal risk
Contraindicated during pregnancy and breastfeeding in the German label. Bromide crosses the placenta and enters breast milk.

Clinical evidence

Research summaries describe studied populations and outcomes; they do not add indications or constitute treatment recommendations.

Extrapolation

Trial summary

Study design / duration
Retrospective series of 32 people with SCN1A-related Dravet syndrome (2012); not a randomized trial.
Primary endpoint
No single pivotal endpoint is identified in the cited source.
Results
More than 50% seizure reduction was reported in 18/32 patients at three months and 15/32 at twelve months; adverse effects led to discontinuation in five. Uncontrolled findings do not establish comparative efficacy.

Trial publications

Comparative evidence

Findings
No randomized head-to-head efficacy comparison is summarized.

Mechanism of action

  • Bromide is the active ion. Membrane hyperpolarization and enhanced GABA-A-mediated anion currents are proposed; the exact clinical antiseizure mechanism is unknown.

Pharmacology

Adult values unless specified. Vd/F denotes apparent oral distribution volume.

Pharmacokinetics

Bioavailability
Rapid, complete gastrointestinal absorption is described. The cited 96% estimate comes from a sodium-bromide study, not a direct potassium-bromide formulation study.
Elimination half-life
Approximately 12 days in humans; adult steady state takes about 30–40 days.
Volume of distribution
Distributes in extracellular fluid; no numerical volume is specified.
Active metabolite(s)
No active metabolites; bromide itself is the active ion.
Active-metabolite half-life
Not applicable: no active metabolite identified.
Protein binding
No protein or fat binding described.
Metabolism / elimination
Not metabolized; excreted predominantly unchanged by the kidneys.

Product-label values depend on population and study conditions.

Molecular structure

Molecular structure of Potassium bromide
PubChem structure of the named compound.
NIH PubChem structure and record ↗

Product history

Initial U.S. approval
No US antiseizure indication. German human-product authorization: 2201990.00.00, granted 7 January 2019; renewed 22 May 2023.
Market / formulation history
Germany national authorization; this does not establish EU-wide authorization or availability in other countries.
Brands
Kaliumbromid DESITIN (Germany)
Manufacturer / marketer
DESITIN Arzneimittel GmbH
Generic availability
Availability and product labeling are country-specific.
Related drugs
Not summarized.

Sources & review status

Germany label checked: 2026-09-27. Other profile sources reviewed: 2026-09-27 · label revision noted at that review: German prescribing information, April 2024.. This is a draft reference; final review is pending.