Europe — EMA
Methoxsalen S.A.L.F.
GNH USA supplies Methoxsalen S.A.L.F. (Methoxsalen), a psoralen for psoriasis and vitiligo. Certified GMP product available worldwide.
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What is Methoxsalen?
Methoxsalen, the active ingredient in Methoxsalen S.A.L.F., is a Psoralen presented as a pharmaceutical preparation for Extracorporeal Use. It is employed in the management of psoriasis and vitiligo in patients who are candidates for photochemotherapy.
GNH USA supplies Methoxsalen S.A.L.F. as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.
What is Methoxsalen used for?
Methoxsalen is a psoralen used in photochemotherapy for skin disorders.
Psoriasis: reduces plaque thickness, scaling and erythema. Vitiligo: promotes repigmentation of depigmented skin areas. Cutaneous photodermatoses: used as an adjunct in selected UVA‑based protocols to modulate skin response.
What are the side effects of Methoxsalen?
Methoxsalen may cause a range of adverse reactions, from mild to severe.
Common Side Effects: - Nausea or gastrointestinal discomfort. - Headache or dizziness. - Transient erythema or mild skin redness. - Pruritus at treated sites. - Increased photosensitivity leading to mild sunburn. - Hyperpigmentation of exposed skin.
Serious or Rare Side Effects: - Severe phototoxic burns or blistering. - Leukopenia or other hematologic abnormalities. - Hepatic dysfunction or elevated liver enzymes. - Severe allergic reactions, including anaphylaxis. - Ocular toxicity such as cataract formation. - Long‑term carcinogenic risk with repeated exposure.
What precautions apply to Methoxsalen?
Before initiating therapy with Methoxsalen, several safety considerations should be observed.
Assess liver function: ensure hepatic enzymes are within acceptable limits. Evaluate skin type: patients with very fair skin may experience heightened photosensitivity. Avoid excessive UVA exposure: limit sun exposure and use protective eyewear. Monitor blood counts: periodic CBC to detect hematologic changes. Contraindicated in pregnancy: avoid use in pregnant or potentially pregnant individuals. Store at ambient temperature: keep in original container, protect from moisture and light.
What does Methoxsalen interact with?
Methoxsalen can interact with other medications, requiring careful management.
Major Interactions (Avoid): - Concurrent photosensitizing antibiotics (e.g., tetracyclines). - Systemic retinoids such as acitretin. - Immunosuppressants that may amplify phototoxic risk.
Moderate Interactions (Monitor Closely): - CYP450 inhibitors that could alter methoxsalen metabolism. - Diuretics that may increase photosensitivity. - Oral contraceptives, which may require dose adjustment. - Antihistamines that could mask early skin reactions.
