Product image of Gradient (Flunarizine Hydrochloride) supplied by GNH India

Gradient

Active Ingredient:
Flunarizine Hydrochloride
Origin:
EU

Gradient (Flunarizine Hydrochloride)

Gradient is an oral medication containing the active ingredient flunarizine hydrochloride, a calcium channel blocker used for migraine prophylaxis and related neurological conditions. The product is marketed in the European Union and is available by prescription only. While the specific tablet strength and dosage form are not disclosed, the medication is administered orally and belongs to the class of T‑type calcium channel antagonists in clinical practice.

Manufacturer / TM Owner

Polifarma S.P.A

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Indications & Clinical Uses

Gradient (flunarizine hydrochloride) is prescribed for several neurological and vascular indications.

  • Prevention of migraine attacks.
  • Management of vertigo associated with vestibular disorders.
  • Treatment of cerebral vascular disorders such as ischemic episodes.
  • Adjunct therapy for certain types of chronic headache.
  • Off‑label use may include prophylaxis of cluster headaches.

Side Effects

Side effects of Gradient vary in frequency and severity, ranging from mild to rare serious reactions.

Common

  • Drowsiness or fatigue.
  • Weight gain.
  • Dry mouth.
  • Constipation.
  • Mood changes such as depression.
  • Muscle weakness.

Serious

  • Extrapyramidal symptoms (e.g., tremor, rigidity).
  • Severe depression or suicidal thoughts.
  • Cardiac arrhythmias.
  • Hepatotoxicity.
  • Allergic reactions including rash or angioedema.

Precautions & Warnings

When considering Gradient therapy, several precautions should be reviewed.

  • Assess patient history for depression or mood disorders before initiating treatment.
  • Use cautiously in individuals with hepatic impairment; monitor liver function.
  • Evaluate cardiac status, especially in patients with known arrhythmias.
  • Discuss potential weight gain with patients who have obesity or metabolic concerns.
  • Avoid abrupt discontinuation to reduce risk of withdrawal symptoms.
  • Pregnancy and lactation status should be clarified; use only if benefits outweigh risks.

Avoid Interactions

Gradient may interact with other medicines, influencing efficacy or safety.

Avoid

  • Concomitant use with other central nervous system depressants (e.g., benzodiazepines, antihistamines) due to additive sedation.
  • Strong CYP3A4 inhibitors, which can increase flunarizine plasma levels.
  • Monoamine oxidase inhibitors (MAOIs) because of potential serotonergic effects.

Use with caution

  • Antidepressants, particularly SSRIs, may increase risk of mood changes.
  • Antihypertensive agents, as flunarizine can cause hypotension.
  • Antipsychotics, especially those affecting dopamine pathways.
  • Other calcium channel blockers, which may enhance cardiovascular effects.

Frequently Asked Questions

Flunarizine blocks T‑type calcium channels and also antagonizes histamine H1 and dopamine D2 receptors, which leads to vasodilation and reduced neuronal excitability that can help prevent migraine attacks.

Yes, Gradient is indicated for the management of vertigo associated with vestibular dysfunction, as flunarizine’s calcium‑channel blocking properties improve inner‑ear blood flow.

No, Gradient is a prescription‑only medication (Rx) in the European Union and must be prescribed by a qualified healthcare professional.

Common side effects include drowsiness, weight gain, dry mouth, constipation, mood changes such as mild depression, and occasional muscle weakness.

Patients with a history of depression should be evaluated carefully before starting Gradient, as the drug can exacerbate mood disorders; monitoring is recommended.

Flunarizine is metabolized in the liver; patients with hepatic impairment may require dose adjustments and periodic liver‑function testing.

Use with caution; flunarizine can lower blood pressure, so concurrent antihypertensives may increase the risk of hypotension and should be monitored.

A severe rash may indicate an allergic reaction; the patient should discontinue the medication and seek immediate medical attention.

The safety of flunarizine during pregnancy or lactation has not been established; it should only be used if the potential benefits justify the potential risks.

Clinical experience suggests that noticeable reduction in migraine frequency may occur after several weeks of consistent daily use, though individual response varies.

No specific dietary restrictions are required, but patients should avoid excessive alcohol as it may increase sedation.

Regular assessments of weight, mood, liver function tests, and cardiovascular status are advised during prolonged treatment.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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