Kventiax SR
On the Bulgarian pack: Квентиакс SR 300 mg таблетки с удължено освобождаване
300 mg · prolonged - release tablets
- Prescription only
- Pain, sleep, mood, epilepsy and the brain
- Active substance
- Quetiapine
- Made by
- KRKA, d.d. Novo Mesto
- Source
- Official label
Quoted from the official source. Not yet reviewed by Mediclarum — the leaflet in your pack is authoritative.
What it is for
Mediclarum has not yet read the official leaflet for this product. The exact uses and dose are in the leaflet inside the pack. Open the official leaflet
How it works
This product’s leaflet is published as a scanned document. This section quotes the US prescribing label for the same active substance (quetiapine fumarate). It describes the substance, not this Bulgarian product — its uses and doses can differ.
The mechanism of action of quetiapine in the listed indications is unclear.
However, the efficacy of quetiapine in these indications could be mediated through a combination of dopamine type 2 (D 2 ) and serotonin type 2 (5HT 2 ) antagonism.
Quetiapine is unlikely to interfere with the metabolism of drugs metabolized by cytochrome P450 enzymes.
The bioavailability of quetiapine is marginally affected by administration with food, with C max and AUC values increased by 25% and 15%, respectively.
Quoted from the prescribing label, sections “Mechanism of Action” and “Pharmacokinetics”. DailyMed · 2026-07-16
Safety of the active substance
This product’s leaflet is published as a scanned document. This section quotes the US prescribing label for the same active substance (quetiapine fumarate). It describes the substance, not this Bulgarian product — its uses and doses can differ.
WARNING: INCREASED MORTALITY IN ELDERLY PATIENTS WITH DEMENTIA-RELATED PSYCHOSIS; and SUICIDAL THOUGHTS AND BEHAVIORS See full prescribing information for complete boxed warning.
- Known hypersensitivity to quetiapine or any components in the formulation.
- ( 4 ) Hypersensitivity to quetiapine or to any excipients in the quetiapine tablets formulation.
- Anaphylactic reactions have been reported in patients treated with quetiapine tablets.
Most common adverse reactions (incidence ≥5% and twice placebo): Adults: somnolence, dry mouth, dizziness, constipation, asthenia, abdominal pain, postural hypotension, pharyngitis, weight gain, lethargy, ALT increased, dyspepsia.
Quoted from the US prescribing label for the same active substance. Your own pack’s leaflet is the authority for your product. DailyMed
Same active substance, strength and form in other countries
Matched on active substance, strength and kind of form only. This is not a statement that the products are equivalent or interchangeable: other ingredients, release and approved uses can differ — ask a pharmacist before swapping.
Medicine passport: one printable page to show a pharmacist abroad
United States51 matching products
Spain54 matching products
- SEROQUEL 300 mg · comprimido recubierto con película3 makers
- QUETIAPINA ALTER 300 mg · comprimido de liberación prolongada2 makers
- QUETIAPINA KERN PHARMA 300 mg · comprimido de liberación prolongada2 makers
- QUETIAPINA MABO 300 mg · comprimido de liberación prolongada2 makers
- QUETIAPINA NORMON 300 MG · comprimido de liberación prolongada2 makers
- QUETIAPINA PENSA 300 mg · comprimido de liberación prolongada2 makers
- QUETIAPINA QUALIGEN 300 mg · comprimido de liberación prolongada2 makers
- QUETIAPINA SANDOZ FARMACEUTICA 300 mg · comprimido de liberación prolongada2 makers
Canada33 matching products
- QUETIAPINE XR 300 mg · tablet (extended-release)3 makers
- QUETIAPINE 300 mg · tablet2 makers
- ACH-QUETIAPINE 300 mg · tablet (immediate-release)
- ACH-QUETIAPINE FUMARATE XR 300 mg · tablet (extended-release)
- ACT QUETIAPINE 300 mg · tablet
- AG-QUETIAPINE FUMARATE 300 mg · tablet (immediate-release)
- AG-QUETIAPINE XR 300 mg · tablet (extended-release)
- APO-QUETIAPINE 300 mg · tablet
Netherlands22 matching products
- Quetiapine Aurobindo 300 mg 300 mg · tablet met verlengde afgifte2 makers
- Seroquel XR 300 mg 300 mg · tablet met verlengde afgifte2 makers
- Quetiapine 300 mg Teva 300 mg · filmomhulde tablet
- Quetiapine Accord 300 mg 300 mg · tablet met verlengde afgifte
- Quetiapine Accord 300 mg filmomhulde tabletten 300 mg · filmomhulde tablet
- Quetiapine CF 300 mg 300 mg · filmomhulde tablet
- Quetiapine Edest 300 mg tabletten met verlengde afgifte 300 mg · tablet met verlengde afgifte
- Quetiapine Fairmed Healthcare 300 mg tabletten met verlengde afgifte 300 mg · tablet met verlengde afgifte
SwitzerlandNo exact match for this strength and form
Details
| Made by | KRKA, d.d. Novo Mesto · Slovenia |
|---|---|
| Active substance | Quetiapine |
| Used in | Pain, sleep, mood, epilepsy and the brain |
| Strength | 300 mg |
| Form | prolonged - release tablets |
| Pack sizes | 10 · 30 · 50 · 60 · 90 · 100 |
| Classification | N05AH04 · Pain, sleep, mood, epilepsy and the brain |
| Name in the register | Квентиакс SR 300 mg таблетки с удължено освобождаване |
| Reg. no. | 20150054 |
Source: Bulgarian Drug Agency register · 2026-08-01 · not reviewed by a clinician
Източник: Изпълнителна агенция по лекарствата (ИАЛ). The publisher’s terms do not grant reproduction, so text is shortened and linked. Publisher’s terms.
Other strengths and forms
5 products are sold under this name. Grouped by form; a number on a strength means several companies make it.
Same active substance
These contain the same substance. That does not mean one can replace another — ask a pharmacist.