Copnat-N

 0.05% Cream
Renata PLC

15 gm tube: ৳ 70.00

Indications
  • Approved Indications:
    • Treatment of moderate to severe inflammatory and pruritic manifestations of corticosteroid-responsive dermatoses, such as:
      • Psoriasis vulgaris (especially plaque psoriasis)
      • Atopic dermatitis
      • Lichen planus
      • Discoid lupus erythematosus
      • Contact dermatitis
      • Seborrheic dermatitis
    • Management of lichen simplex chronicus and other chronic skin conditions unresponsive to less potent steroids.
    • Treatment of oral mucosal inflammatory lesions (in suitable topical formulations).
  • Clinically Accepted Off-Label Uses:
    • Alopecia areata.
    • Vitiligo (for reducing inflammation).
    • Other resistant eczematous and inflammatory dermatoses.
Dosage & Administration
  • Adults:
    • Apply a thin layer to the affected area once or twice daily.
    • Duration typically limited to 2 weeks for continuous use to avoid adverse effects.
    • Maximum dose usually not exceeding 50 grams per week.
  • Pediatrics (≥12 years):
    • Use with caution; apply thinly once daily.
    • Duration and frequency should be limited due to increased risk of systemic absorption.
  • Elderly:
    • Use the lowest effective dose.
    • Monitor closely for skin thinning and systemic effects.
  • Special Populations:
    • No specific dosage adjustment in renal or hepatic impairment due to minimal systemic absorption, but caution advised for extensive or prolonged use.
  • Administration Notes:
    • For topical use only.
    • Avoid use on face, groin, or axilla unless directed.
    • Avoid occlusive dressings unless prescribed.
    • Do not apply on broken or infected skin.
Mechanism of Action (MOA)

Clobetasol propionate is a synthetic high-potency corticosteroid that binds to intracellular glucocorticoid receptors, modulating gene transcription to suppress pro-inflammatory cytokines and mediators such as prostaglandins and leukotrienes. This results in potent anti-inflammatory, immunosuppressive, antipruritic, and vasoconstrictive effects. The drug inhibits inflammatory cell infiltration, edema, capillary dilation, and fibroblast proliferation, thereby rapidly reducing skin inflammation and symptoms in corticosteroid-responsive dermatoses.

Pharmacokinetics
  • Absorption:
    Minimal systemic absorption under normal topical use; increased with damaged skin or prolonged use.
  • Distribution:
    Primarily localized within the epidermis and dermis.
  • Metabolism:
    Extensively metabolized hepatically to inactive metabolites.
  • Excretion:
    Eliminated via urine and feces.
  • Half-life:
    Not clinically significant due to topical route.
  • Onset of action:
    Anti-inflammatory effects often observed within hours to days of application.
Pregnancy Category & Lactation
  • Pregnancy:
    Classified as FDA Category C. Use only if potential benefit justifies the risk to the fetus. Topical use leads to low systemic absorption.
  • Lactation:
    Systemic absorption is minimal; however, caution is advised. Avoid applying to breast area to prevent infant exposure.
  • Caution: Use during pregnancy and breastfeeding only under medical supervision.
Therapeutic Class
  • Primary Class: Topical Corticosteroid
  • Subclass: High-potency (Class I) corticosteroid
Contraindications
  • Hypersensitivity to clobetasol propionate or formulation excipients.
  • Untreated bacterial, viral, or fungal skin infections.
  • Rosacea, perioral dermatitis, acne vulgaris.
  • Use on eyes or eyelids.
  • Children under 12 years (unless under specialist supervision).
Warnings & Precautions
  • Limit treatment duration to maximum 2 consecutive weeks to prevent skin atrophy, striae, and systemic corticosteroid effects.
  • Avoid occlusive dressings unless specifically directed.
  • Use caution in patients with diabetes, hypertension, or other conditions aggravated by corticosteroids.
  • Monitor for hypothalamic-pituitary-adrenal (HPA) axis suppression in extensive or prolonged use.
  • Avoid use on large areas or broken skin to reduce systemic absorption risk.
  • Discontinue if skin irritation or hypersensitivity occurs.
  • Avoid use in pediatrics without specialist guidance.
Side Effects
  • Common: Burning, itching, irritation, dryness at application site.
  • Less common: Skin atrophy, telangiectasia, hypopigmentation, striae, folliculitis.
  • Rare: Allergic contact dermatitis, secondary infections.
  • Severe (rare): HPA axis suppression, Cushing's syndrome with prolonged use.
  • Side effects generally related to potency, duration, and area of use.
Drug Interactions
  • Minimal systemic interactions due to topical use.
  • Potential additive effects with other systemic corticosteroids if absorbed.
  • Avoid concomitant use with other topical corticosteroids to reduce cumulative potency and risk of side effects.
Recent Updates or Guidelines
  • Emphasis on restricting duration of use to avoid skin and systemic adverse effects.
  • Updated recommendations advise against use on face and intertriginous areas except under specialist care.
  • Guidelines encourage patient education on correct application and monitoring for side effects.
Storage Conditions
  • Store at 20°C to 25°C (68°F to 77°F).
  • Protect from light and moisture.
  • Do not freeze.
  • Keep container tightly closed.
  • Keep out of reach of children.
Available Brand Names