Product image of Metoxaleno Macopharma (Methoxsalen) supplied by GNH India

Metoxaleno Macopharma

Active Ingredient:
Methoxsalen
Origin:
EU

Metoxaleno Macopharma (Methoxsalen)

Methoxsalen, the active ingredient in Metoxaleno Macopharma, is a psoralen presented as a pharmaceutical preparation for extracorporeal use. It is employed in the management of certain chronic skin disorders, primarily in adult patients requiring phototherapy.

GNH India supplies Metoxaleno Macopharma as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Maco Pharma

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Indications & Clinical Uses

Methoxsalen is a psoralen that modulates skin cell proliferation and immune response in phototherapy‑based treatments.

  • Psoriasis: reduces plaque formation and scaling when combined with UVA exposure.
  • Vitiligo: promotes repigmentation of depigmented patches by stimulating melanocyte activity.
  • Cutaneous T‑cell lymphoma (rare): may be used as adjunctive therapy in selected cases.

How It Works

  • Methoxsalen intercalates into DNA strands and, upon activation by UVA radiation, forms covalent cross‑links that inhibit DNA synthesis. This photochemical interaction suppresses keratinocyte hyperproliferation and modulates local immune activity, contributing to clinical improvement in photosensitive skin conditions.

Side Effects

Methoxsalen may cause a range of adverse reactions, most of which are related to its photosensitizing properties.

Common Side Effects

  • Nausea: mild to moderate gastrointestinal upset.
  • Headache: transient cranial discomfort.
  • Erythema: redness of treated skin areas.
  • Pruritus: itching at exposure sites.
  • Hyperpigmentation: darkening of skin where UVA was applied.

Serious or Rare Side Effects

  • Severe phototoxic reaction: blistering or ulceration of skin.
  • Stevens‑Johnson syndrome: extensive mucocutaneous lesions.
  • Liver toxicity: elevated transaminases.
  • Hematologic abnormalities: anemia or leukopenia.
  • Ocular toxicity: cataract formation with prolonged exposure.

Precautions & Warnings

Methoxsalen requires careful patient assessment and monitoring to minimize risks.

  • Assess skin type: evaluate susceptibility to phototoxic reactions before therapy.
  • Avoid sun exposure: limit natural UV exposure during treatment periods.
  • Monitor liver function: perform baseline and periodic hepatic enzyme tests.
  • Review concomitant photosensitizing drugs: adjust therapy if other agents increase UV sensitivity.
  • Use protective eyewear: wear UVA‑blocking glasses during exposure.
  • Store at ambient temperature: keep in original container, protect from moisture and light.

Avoid Interactions

Methoxsalen can interact with several medication classes, altering its safety profile.

Major Interactions (Avoid)

  • Other psoralens: additive phototoxicity.
  • Systemic retinoids: increased risk of severe skin reactions.
  • Tetracyclines: enhanced photosensitivity.
  • Phenothiazines: heightened UV‑induced skin damage.
  • Thiazide diuretics: potential for exaggerated phototoxic response.

Moderate Interactions (Monitor Closely)

  • NSAIDs: may increase skin irritation.
  • Antihistamines: can mask early signs of phototoxicity.
  • Oral contraceptives: possible alteration of drug metabolism.

Frequently Asked Questions

Metoxaleno Macopharma contains methoxsalen, a psoralen used in combination with UVA phototherapy to treat chronic skin disorders such as psoriasis and vitiligo. It helps reduce plaque formation in psoriasis and promotes repigmentation in vitiligo by modulating skin cell growth.

Methoxsalen intercalates into DNA and, when activated by UVA light, creates cross‑links that inhibit DNA synthesis. This photochemical action suppresses excessive keratinocyte proliferation and alters local immune responses, leading to clinical improvement in targeted skin conditions.

The dosage of Metoxaleno Macopharma is individualized. A qualified prescriber determines the appropriate amount, frequency, and duration based on the patient’s condition, response to therapy, and any concurrent treatments. Patients should follow the prescribing clinician’s instructions precisely.

Safety data for methoxsalen in pregnancy and lactation are limited. It is generally advised to avoid use unless the potential benefit outweighs the risk. Women who are pregnant, planning to become pregnant, or breastfeeding should discuss alternatives with their healthcare provider.

To place an order, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including any cold‑chain requirements), and necessary import documentation.

Methoxsalen is a classic psoralen used with UVA (PUVA) therapy, offering a well‑established efficacy profile for psoriasis and vitiligo. Compared with newer narrow‑band UVB treatments, PUVA may achieve faster clearance in severe psoriasis but carries a higher risk of phototoxicity and long‑term skin cancer, requiring careful patient selection.

Metoxaleno Macopharma should be stored at ambient temperature, below 25 °C, in its original packaging. Protect the product from moisture, direct sunlight, and excessive heat to maintain stability and potency throughout its shelf life.

The preparation is intended for extracorporeal use, typically administered orally under medical supervision before scheduled UVA exposure. The exact route and timing are determined by the treating physician, who coordinates drug intake with phototherapy sessions to achieve optimal therapeutic effect.

Serious risks include severe phototoxic reactions such as blistering, Stevens‑Johnson syndrome, and increased long‑term risk of skin cancers. Ocular toxicity, including cataract formation, can occur with repeated exposure, so protective eyewear and regular eye examinations are essential.

Patients with a history of photosensitivity disorders, active skin infections, uncontrolled liver disease, or those taking other strong photosensitizing medications should avoid methoxsalen. Additionally, individuals with known hypersensitivity to psoralens or who are pregnant without clear medical justification should not use this product.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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