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New search Medicine profile Meclozine/Caffeine

Clinical medicine profile

Meclozine/Caffeine

Therapeutic agent (verify pharmacological class)

POM
Evidence state General guidance Reviewed 14 Aug 2026
Route
See product SmPC
Schedule
POM
ATC
Not assigned
PPB status
registered
Patient advice Check interactions
Verification required

This profile needs source confirmation

Some sections contain general class guidance rather than medicine-specific evidence. Confirm prescribing decisions against the current SmPC and Kenya STG/EML.

01 Risk first

Safety essentials

The information most likely to change a prescribing or dispensing decision.

Contraindications

  • [From component Caffeine Citrate] CONTRAINDICATIONS Caffeine Citrate Injection is contraindicated in patients who have demonstrated hypersensitivity to any of its components.

Precautions

  • [From component Caffeine Citrate] Prolonged half-life in premature neonates, history of the habit of the mother in regards to the consummation of caffeine, worsening of seizure disorders, impaired renal or hepatic function.
02 Point of care

Dosing matrix

Population and organ-function guidance, shown together for faster comparison.

Adult

Dosing is indication-, age-, weight- and organ-function-specific for this INN. Do not use class averages for high-risk patients. Confirm the exact regimen in the current SmPC and Kenya Standard Treatment Guidelines. Typical professional workflow: (1) confirm indication, (2) check renal/hepatic function, (3) screen interactions/allergies, (4) select dose/route/duration, (5) define monitoring.

Paediatric

Paediatric dosing is weight- and age-based; use a paediatric formulary / SmPC. Do not extrapolate adult tablets without calculation.

Renal

Review renal impairment dosing; many agents need CrCl/eGFR adjustment.

  • CrCl 0–120: Confirm renal dosing in product SmPC / primary label.
Hepatic

Review hepatic impairment dosing; monitor LFTs if agent is hepatically cleared or hepatotoxic.

03 Clinical use

Use, effects & interactions

Indications

  • Therapeutic use is agent- and indication-specific within the class (Therapeutic agent (verify pharmacological class)).
  • Use according to culture results, national guidelines (Kenya STG/EML where applicable) and the current product SmPC.
  • Nausea and vomiting

Adverse effects

  • [From component Caffeine Citrate] ADVERSE REACTIONS Overall, the reported number of adverse events in the double-blind period of the controlled trial was similar for the caffeine citrate and placebo groups.
  • The following table shows adverse events that occurred in the double-blind period of the controlled trial and that were more frequent in caffeine citrate-treated patients than placebo.
  • ADVERSE EVENTS THAT OCCURRED MORE FREQUENTLY IN CAFFEINE CITRATE-TREATED PATIENTS THAN PLACEBO DURING DOUBLE-BLIND THERAPY Adverse Event (AE) Caffeine Citrate N=46 n (%) Placebo N=39 n (%) BODY AS A WHOLE Accidental Injury 1 (2.2) 0 (0.0) Feeding Intolerance 4 (8.7) 2 (5.1) Sepsis 2 (4.3) 0 (0.0) CARDIOVASCULAR SYSTEM Hemorrhage 1 (2.2) 0 (0.0) DIGESTIVE SYSTEM Necrotizing Enterocolitis 2 (4.3) 1 (2.6) Gastritis 1 (2.2) 0 (0.0) Gastrointestinal Hemorrhage 1 (2.2) 0 (0.0) HEMIC AND LYMPHATIC SYSTEM Disseminated Intravascular Coagulation 1 (2.2) 0 (0.0) METABOLIC AND NUTRITIVE DISORDERS Acidosis 1 (2.2) 0 (0.0) Healing Abnormal 1 (2.2) 0 (0.0) NERVOUS SYSTEM Cerebral Hemorrhage 1 (2.2) 0 (0.0) RESPIRATORY SYSTEM Dyspnea 1 (2.2) 0 (0.0) Lung Edema 1 (2.2) 0 (0.0) SKIN AND APPENDAGES Dry Skin 1 (2.2) 0 (0.0) Rash 4 (8.7) 3 (7.7) Skin Breakdown 1 (2.2) 0 (0.0) SPECIAL SENSES Retinopathy of Prematurity 1 (2.2) 0 (0.0) UROGENITAL SYSTEM Kidney Failure 1 (2.2) 0 (0.0) In addition to the cases above, three cases of necrotizing enterocolitis were diagnosed in patients receiving caffeine citrate during the open-label phase of the study.
  • Three of the infants who developed necrotizing enterocolitis during the trial died.
  • All had been exposed to caffeine.
  • Two were randomized to caffeine, and one placebo patient was “rescued” with open-label caffeine for uncontrolled apnea.
  • Adverse events described in the published literature include: central nervous system stimulation (i.e., irritability, restlessness, jitteriness), cardiovascular effects (i.e., tachycardia, increased left ventricular output, and increased stroke volume), gastrointestinal effects (i.e., increased gastric aspirate, gastrointestinal intolerance), alterations in serum glucose (i.e., hypoglycemia and hyperglycemia), and renal effects (i.e., increased urine flow rate, increased creatinine clearance, and increased sodium and calcium excretion).
  • Published long-term follow-up studies have not shown caffeine to adversely affect neurological development or growth parameters.
  • A published randomized, placebo-controlled, clinical trial in premature infants with birthweights of 500-1250 grams studied the safety of caffeine citrate in apnea of prematurity (NCT00182312).
  • This trial randomized approximately 2000 premature infants with a mean gestational age of 27 weeks at birth.
  • The median duration of caffeine therapy was 37 days.
  • Prior to discharge home, death, ultrasonographic signs of brain injury, and necrotizing enterocolitis were not more common in the caffeine citrate group compared to the placebo.
  • At follow up at both 18 months and 5 years corrected age, death was not more common in the caffeine citrate treated group compared to placebo, nor did caffeine citrate use adversely affect neurodevelopmental outcomes.
  • Fixed-dose/multi-ingredient product.
  • Clinical details partially inherited from component monographs: Caffeine Citrate.
  • Confirm combination SmPC for exact dosing.
04 Pharmacology

Mechanism & disposition

Combination product.

Combination product.Component mechanism (Caffeine Citrate): Me…It is a bronchial smooth muscle relaxant,…
Read complete mechanism

Combination product. Component mechanism (Caffeine Citrate): Mechanism of Action Caffeine is structurally related to other methylxanthines, theophylline, and theobromine. It is a bronchial smooth muscle relaxant, a CNS stimulant, a cardiac muscle stimulant, and a diuretic. Although the mechanism of action of caffeine in apnea of prematurity is not known, several mechanisms have been hypothesized. These include: (1) stimulation of the respiratory center, (2) increased minute ventilation, (3) decreased threshold to hypercapnia, (4) increased response to hypercapnia, (5) increased skeletal muscle tone, (6) decreased diaphragmatic fatigue, (7) increased metabolic rate, and (8) increased oxygen consumption. Most of these effects have been attributed to antagonism of adenosine receptors, both A 1 and A 2 subtypes, by caffeine, which has been demonstrated in receptor binding assays and observed at concentrations approximating those achieved therapeutically.

Onset

Product-specific

Duration

Product-specific

Route

See product SmPC

Elimination

are product-specific. Consider food effects, protein binding, hepatic CYP/UGT

Half-life

when adjusting for organ impairment, age and drug interactions. Verify parameters in the current SmPC.

05 Special populations

Pregnancy, lactation & diet

Pregnancy

[From component Caffeine Citrate] Pregnancy Pregnancy Category C Concern for the teratogenicity of caffeine is not relevant when administered to infants. In studies performed in adult animals, caffeine (as caffeine base) administered to pregnant mice as sustained release pellets at 50 mg/kg (less than the maximum recommended intravenous loading dose for infants on a mg/m 2 basis), during the period of organogenesis, caused a low incidence of cleft palate and exencephaly in the fetuses. There are no adequate and well-controlled studies in pregnant women.

Lactation

[Meclozine] Assess infant risk vs benefit of maternal therapy; prefer agents with lactation data. [Caffeine] Assess infant risk vs benefit of maternal therapy; prefer agents with lactation data.

06 Kenya market

Brands & loaded prices

From
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BrandManufacturerPackObserved price
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07 Provenance

Sources & review state

Primary sourceLocal active-ingredient clinical extract; Component monographs (multi-source pipeline); Professional class pharmacology (Therapeutic agent (verify pharmacological class))
Last reviewed14 Aug 2026
EvidenceGeneral guidance

Decision support only. Confirm patient-specific decisions against the current product SmPC, Kenya STG/EML, and professional judgement.