Ketrel (Tretinoin)

Tretinoin, the active ingredient in Ketrel, is a retinoid presented as a topical preparation for topical use. It is used to treat acne vulgaris, photodamage and certain forms of psoriasis in patients requiring prescription therapy.

GNH USA supplies Ketrel as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Ketrel, a topical retinoid, acts on skin cell differentiation and inflammation, making it useful for several dermatological conditions. - Acne vulgaris: reduces comedones, papules and inflammatory lesions. - Photodamage/skin aging: improves fine lines, hyperpigmentation and overall texture. - Psoriasis (off‑label): may decrease plaque thickness, scaling and erythema.

Topical tretinoin can cause a range of skin reactions, from mild irritation to rare severe events.

Common Side Effects: - Erythema: redness of the treated area. - Peeling: flaking or desquamation of skin. - Dryness: reduced skin moisture. - Burning sensation: transient heat or stinging. - Itching: mild pruritus. - Irritation: general discomfort on application.

Serious or Rare Side Effects: - Severe allergic reaction: swelling, hives or anaphylaxis. - Blistering or bullous dermatitis. - Photosensitivity: heightened reaction to sunlight. - Stevens‑Johnson syndrome or toxic epidermal necrolysis. - Severe erythema or ulceration. - Ocular irritation if applied near eyes.

When using Ketrel, follow these safety measures to minimize risk. - Pregnancy: avoid use; teratogenic potential is not established. - Breastfeeding: discontinue if nursing, as drug may pass into milk. - Sun exposure: limit UV exposure and use sunscreen. - Broken skin: do not apply to irritated, inflamed or wounded areas. - Concomitant irritants: avoid using other harsh topical agents simultaneously. - Store at room temperature: keep in original container, protect from moisture and light.

Tretinoin may interact with other medications or topical agents, requiring attention to avoid reduced efficacy or increased toxicity.

Major Interactions (Avoid): - Systemic isotretinoin: combined retinoid exposure can increase toxicity. - Tetracycline antibiotics: may enhance photosensitivity. - Phenothiazines or thiazide diuretics: can increase photosensitivity risk.

Moderate Interactions (Monitor Closely): - Benzoyl peroxide: may cause excessive irritation. - Other topical retinoids or exfoliants: increase skin sensitivity. - Vitamin A supplements: additive retinoid effect may raise adverse‑event risk.