CANESTEN 20 GM CREAM

Indications

Approved Uses

Tinea pedis (athlete's foot), tinea cruris (jock itch), tinea corporis (ringworm), tinea versicolor, cutaneous candidiasis

Off-Label Uses

Possible off-label: seborrheic dermatitis (Malassezia-associated) and Candida-associated diaper dermatitis (adjunct/selected cases).

Dosage & Administration

Dosing by Condition

Tinea pedis: Apply thin layer twice daily for 2 weeks (adults 17+); Tinea corporis/cruris: Apply thin layer twice daily for 1 week (adults 17+); Cutaneous candidiasis: Apply twice daily for 2-4 weeks; Tinea versicolor: Apply twice daily for 2 weeks. Do not exceed 2 weeks for tinea cruris/corporis or 4 weeks for tinea pedis unless directed by doctor

Initial Dose

Apply a thin layer to the affected area and surrounding skin twice daily

Maintenance Dose

Continue application for 2 to 4 weeks depending on the infection, and for at least 14 days after symptoms disappear to avoid recurrence.

Maximum Dose

Apply a thin layer to affected area twice daily (morning and evening); duration depends on condition (1-4 weeks for tinea corporis/cruris, up to 4 weeks for tinea pedis, 2 weeks for tinea versicolor). Do not use cream for tinea cruris and tinea corporis for more than 2 weeks, and for tinea pedis for more than 4 weeks unless directed by doctor

Children's Dosage

Safe to use in children; apply thin layer to affected area twice daily. Use with caution in infants under 2 years - consult a physician

Dose Adjustment Notes

No dose adjustment is required in renal or hepatic impairment for topical use.

How to Take

Clean and dry the affected area before application. Apply a thin layer of cream to the affected skin and surrounding area. Rub in gently. Wash hands after application unless hands are the treated area.

Side Effects

Common Side Effects

Local application-site reactions: burning, stinging/irritation, erythema/redness, pruritus/itching; sometimes peeling.

Side Effect Frequency

Common: local application-site reactions such as burning/stinging/irritation, erythema and pruritus; Uncommon: contact dermatitis/rash/peeling; Rare/very rare: hypersensitivity reactions (e.g., urticaria, angioedema, anaphylaxis).

Safety & Warnings

Contraindications

Hypersensitivity to clotrimazole or any excipients/components of the cream.

Warnings & Precautions

For external use only; avoid eyes/mucous membranes; discontinue if irritation/sensitization occurs; do not apply to broken skin/open wounds unless directed; avoid occlusive dressings unless advised; if no improvement/worsening after ~2-4 weeks seek reassessment; if used in the genital area, it may temporarily reduce effectiveness of latex condoms/diaphragms.

Age Restriction

Not recommended for children under 2 years unless directed/supervised by a doctor; otherwise can be used in older children and adults per label directions.

Drug Interactions

Drug Interactions

No known clinically significant drug interactions with topical clotrimazole when used as directed; note that vaginal clotrimazole can weaken latex contraceptives, but this is not a typical issue for skin cream use.

Interaction Severity

No clinically significant drug interactions expected with topical clotrimazole; at most, minor additive local irritation with other topical irritants.

Food Interaction

None / not applicable for topical clotrimazole cream.

Special Populations

Children

Safe to use in children; apply thin layer to affected area twice daily. Use with caution in infants under 2 years - consult a physician

Kidney Impairment

No adjustment needed

Storage & Patient Advice

Missed Dose

Apply when remembered; if it is close to the next application, skip the missed dose and continue the regular schedule-do not apply extra to make up.

Stopping the Medicine

Do not stop early; complete the full recommended course (commonly 2-4 weeks depending on site/indication) even if symptoms improve, and reassess if not improving by ~4 weeks.

Overdose

Topical overdose is unlikely to cause systemic toxicity; excessive use may increase local irritation. If accidentally ingested, seek medical advice/poison center-GI upset (e.g., nausea/vomiting/abdominal discomfort) may occur and treatment is supportive.

Patient Counseling

Apply a thin layer to clean, dry affected skin (usually twice daily) and continue for the full recommended duration (often 2-4 weeks; seek advice if not improving). Avoid eyes/mucosa and broken skin; wash hands after use. Stop and seek care if severe irritation/allergy occurs. Note: topical clotrimazole can reduce the effectiveness of latex condoms/diaphragms if used on genital areas.

Monitoring Requirements

No routine monitoring required for topical use; monitor for local hypersensitivity reactions

Pharmacology

Mechanism of Action

Inhibits fungal ergosterol synthesis by inhibiting lanosterol 14-α-demethylase (CYP51), disrupting cell membrane integrity/permeability and inhibiting fungal growth.

Onset of Action

Symptom improvement often begins within a few days; full clinical cure typically requires ~2-4 weeks depending on site/severity (e.g., tinea pedis often longer).

Duration of Effect

Therapeutic effect is maintained only with regular application (commonly twice daily); stopping early increases risk of persistence/recurrence.

Half-Life

Negligible systemic absorption with topical clotrimazole; systemic half-life is not clinically relevant/typically not reported for the cream.

Bioavailability

Minimal systemic absorption through intact skin (generally <1%; often described as negligible).

Excretion

Any absorbed clotrimazole is extensively metabolized in the liver; metabolites are excreted mainly in bile/feces with a smaller renal component.

Product Information

Available Dosage Forms

For this SFDA-registered product (CANESTEN CREAM 1%, 20 g): topical cream only.

Composition per Dose

Each gram of cream contains: 10mg Clotrimazole (1%)

Generic Availability

Yes

OTC Alternatives

OTC topical alternatives for superficial fungal infections include: miconazole, terbinafine, tolnaftate (and, where available OTC locally, ketoconazole).

Skin Condition

Fungal

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