Nausicalm Adultes (Dimenhydrinate)

Dimenhydrinate is an antihistamine used to manage conditions affecting the vestibular system and nausea pathways.

• Motion sickness: reduces nausea, vomiting and dizziness caused by travel or movement.
• Vestibular‑related nausea and vomiting: alleviates symptoms associated with inner‑ear disorders.
• Vertigo: helps control the sensation of spinning and imbalance.

• Dimenhydrinate blocks peripheral H1 histamine receptors and exerts anticholinergic effects, which diminish vestibular stimulation and suppress the central vomiting centre. By reducing histamine‑mediated signaling and cholinergic activity, it stabilises the inner ear and brain pathways that trigger nausea, vomiting and vertigo.

Dimenhydrinate may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

• Drowsiness: feeling unusually sleepy or fatigued.
• Dry mouth: reduced salivation leading to a parched sensation.
• Blurred vision: temporary difficulty focusing.
• Constipation: slowed intestinal motility.
• Urinary retention: difficulty emptying the bladder.

Serious or Rare Side Effects

• Allergic reactions: rash, itching, swelling, or difficulty breathing.
• Severe skin reactions: Stevens‑Johnson syndrome or toxic epidermal necrolysis.
• Cardiac arrhythmias: irregular heartbeats, especially in susceptible individuals.
• Confusion or hallucinations: altered mental status, more common in the elderly.
• Seizures: rare but possible neurological events.

Before using Dimenhydrinate, consider the following safety measures.

• Avoid alcohol: may increase drowsiness and impair coordination.
• Use caution in glaucoma: anticholinergic effect can raise intra‑ocular pressure.
• Use caution in elderly: higher risk of sedation and confusion.
• Pregnancy: safety category unknown; discuss with a healthcare professional before use.
• Breastfeeding: consult a physician as drug may pass into milk.
• Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Dimenhydrinate can interact with several drug classes; monitoring is advised.

Major Interactions (Avoid)

• Monoamine oxidase inhibitors (MAOIs): risk of severe hypertension.
• Other anticholinergic agents: additive dry‑mouth, urinary retention, and blurred vision.
• Central nervous system depressants (e.g., benzodiazepines, opioids): enhanced sedation and respiratory depression.

Moderate Interactions (Monitor Closely):\n- Antihypertensive drugs: possible additive hypotensive effect.

• Antidiabetic medications: may mask hypoglycemia symptoms.
• Tricyclic antidepressants: increased anticholinergic burden.