Majoven Xl (Venlafaxine Hydrochloride)

Venlafaxine Hydrochloride is an SNRI indicated for several psychiatric conditions.

• Major depressive disorder: reduces depressive symptoms and improves overall mood.
• Generalized anxiety disorder: lessens excessive worry and associated physical tension.
• Social anxiety disorder: diminishes fear of social situations and improves functional performance.
• Panic disorder: decreases frequency and intensity of panic attacks.

• Venlafaxine Hydrochloride inhibits the reuptake of serotonin and norepinephrine at neuronal synapses, leading to increased concentrations of these neurotransmitters in the central nervous system. The enhanced serotonergic and noradrenergic signaling modulates mood, anxiety, and pain pathways, contributing to its therapeutic effects in depressive and anxiety disorders.

Venlafaxine Hydrochloride may cause a range of adverse reactions.

Common Side Effects

• Nausea: mild to moderate stomach upset.
• Headache: transient cranial discomfort.
• Dry mouth: reduced salivation.
• Insomnia: difficulty falling or staying asleep.
• Dizziness: sensation of light‑headedness.
• Sweating: increased perspiration.

Serious or Rare Side Effects

• Serotonin syndrome: potentially life‑threatening condition with agitation, hyperthermia, and neuromuscular abnormalities.
• Hypertension: elevated blood pressure requiring monitoring.
• Suicidal thoughts: emergence of suicidal ideation, especially in early treatment.
• Severe hyponatremia: low sodium levels causing confusion or seizures.
• Cardiac arrhythmia: abnormal heart rhythm in susceptible individuals.
• Anaphylaxis: rare severe allergic reaction with rash, swelling, and breathing difficulty.

Before initiating therapy with Venlafaxine Hydrochloride, consider the following precautions.

• Cardiovascular assessment: evaluate blood pressure and heart rate regularly.
• Serotonin syndrome monitoring: watch for signs of excessive serotonergic activity.
• Bipolar disorder screening: avoid use in untreated bipolar patients due to risk of mania.
• Hepatic/renal function: adjust use if liver or kidney impairment is present.
• Discontinuation: taper gradually under medical supervision to prevent withdrawal symptoms.
• Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Venlafaxine Hydrochloride can interact with several medication classes.

Major Interactions (Avoid)

• Monoamine oxidase inhibitors (MAOIs): risk of severe serotonin syndrome.
• Other serotonergic agents (SSRIs, SNRIs, Triptans): increased serotonin toxicity.
• Linezolid: combined serotonergic effect may be hazardous.

Moderate Interactions (Monitor Closely)

• Non‑steroidal anti‑inflammatory drugs (NSAIDs): heightened bleeding risk.
• Anticoagulants (warfarin, DOACs): may enhance anticoagulant effect.
• CYP2D6 inhibitors (e.g., fluoxetine, quinidine): can raise venlafaxine plasma levels.