Ictammolo Nova Argentia (Ichthammol)

Ichthammol is used topically for inflammatory and suppurative skin conditions.

• Acne: reduces inflammation and promotes drying of lesions.
• Boils and furuncles: facilitates drainage and alleviates pain.
• Eczema and dermatitis: soothes irritation and limits secondary infection.
• Psoriasis plaques: softens scales and diminishes redness.
• Minor wounds and ulcerations: provides antiseptic action and supports healing.

• Ichthammol exerts its effects through a combination of anti‑inflammatory, antibacterial and keratolytic actions. The sulfonated oil component inhibits prostaglandin synthesis, reducing local inflammation, while the sulfur content contributes to antimicrobial activity against common skin pathogens. Its mild keratolytic property helps to soften hyperkeratotic tissue, facilitating drainage and healing of suppurative lesions.

Topical application of ichthammol may be associated with local skin reactions.

Common Side Effects

• Mild skin irritation or burning sensation.
• Redness (erythema) at the application site.
• Dryness or peeling of the skin.
• Itching (pruritus).
• Contact dermatitis in sensitive individuals.
• Temporary discoloration of the skin.

Serious or Rare Side Effects

• Severe allergic reaction (angioedema, anaphylaxis).
• Extensive skin necrosis.
• Systemic toxicity from excessive absorption (very rare).
• Persistent ulceration or worsening of the lesion.
• Development of secondary infection if used on heavily contaminated wounds.

When using ichthammol, consider the following safety measures.

• Skin integrity: avoid application on large open wounds unless directed by a healthcare professional.
• Allergy: discontinue use immediately if signs of hypersensitivity appear.
• Pregnancy: safety not established; use only if potential benefit outweighs risk.
• Children: apply under supervision and avoid excessive quantities.
• Drug interactions: no specific interactions known, but monitor when combined with other topical irritants.
• Store at ambient temperature: keep in the original container, protect from moisture and light.

Ichthammol may interact with other topical agents; observe the following guidance.

Major Interactions (Avoid)

• Concurrent use with potent topical corticosteroids on the same area may increase risk of skin atrophy.
• Application together with strong chemical irritants (e.g., phenol) can exacerbate local irritation.

Moderate Interactions (Monitor Closely)

• Use with other antimicrobial ointments may reduce overall efficacy.
• Combining with photosensitizing agents may heighten sensitivity to light.
• Occlusive dressings can increase absorption; monitor for excessive local reaction.
• Interaction with systemic antibiotics is not established but observe for overlapping adverse effects.