Fenistil Gel

Fenistil Gel is a topical antihistamine containing Dimetindene Maleate 0.1%, a competitive H1-receptor antagonist that blocks histamine binding at the skin surface.

Two key mechanisms:

• H1-receptor blockade: Blocks histamine from triggering itch, redness, and swelling in the skin, reducing the localised allergic response
• Local anaesthetic action: Fenistil Gel's mild local anaesthetic properties provide faster itch relief than standard H1-blockers alone

Indicated for insect bite itch, mild urticaria, and minor allergic skin reactions. Manufactured by GSK Consumer Healthcare in a 20 g tube.

Fenistil Gel (Dimetindene Maleate) is indicated for:

• Insect bites and stings: Mosquitoes, ants, midges, flies — rapidly relieves itch, redness, and swelling
• Mild urticaria: Reduces raised, red, itchy welts from localised allergic reactions
• Contact hypersensitivity: Rash from plant contact, chemical exposure, or allergenic products
• Heat rash: Soothes itch from heat-related vesicular rash
• Chickenpox itch: Helps reduce itching from vesicles during the acute phase

Not suitable for: bacterial or fungal skin infections, or chronic inflammatory dermatoses such as eczema or psoriasis — consult a doctor for these conditions.

How to apply Fenistil Gel correctly:

• Clean and dry the affected area
• Apply a thin layer of gel to cover the affected skin
• Apply 2-4 times daily as needed
• Wash hands after application unless the hands are the treated area
• Avoid contact with eyes, mucous membranes, or open wounds

Dosage by age: Adults and children 12 and above apply 2-4 times daily. Children aged 1-12 apply 1-3 times daily using a smaller amount — consult a pharmacist or doctor. Under 1 year, consult a doctor before use. Do not use for more than 7 days without consulting a doctor.

Occasional side effects of Fenistil Gel:

• Mild dryness or slight stinging: Uncommon; more likely in sensitive or broken skin
• Increased photosensitivity: Fenistil Gel may heighten sun sensitivity at the application site — minimise direct sun exposure while using
• Contact allergy: Rare; if redness or itch increases after application, discontinue use

Stop use and seek medical advice if the rash spreads, significant swelling develops, symptoms worsen, or a severe allergic reaction occurs. Overall, Fenistil Gel has an excellent safety profile with very rare serious adverse effects.

Contraindications:

• Hypersensitivity to Dimetindene Maleate or any excipient
• Do not apply to the eyes, mucous membranes, or open wounds
• Not for use in infants under 1 month of age

Precautions: Dimetindene may increase photosensitivity — avoid direct sunlight or apply sunscreen to the treated area. Consult a doctor before use in pregnancy or breastfeeding. Infants aged 1 month to 1 year should only use under medical recommendation. Avoid applying over very large surface areas as this may increase systemic absorption.

Fenistil Gel (Dimetindene Maleate 0.1%) is a topical antihistamine for localised itch relief, distinct from the topical steroids in the Intimo store which address inflammation through a different mechanism.

• Fenistil Gel (Dimetindene Maleate 0.1%) — Topical antihistamine for fast itch relief Blocks cutaneous H1-receptors to inhibit histamine-mediated itch and provides mild local anaesthesia. Suited for insect bites, mosquito bites, mild urticaria, and localised allergic itch reactions. Does not contain a corticosteroid.
• Elomet (Mometasone Furoate) — Medium-high potency topical steroid for inflamed skin Suppresses cutaneous cytokine and prostaglandin expression to resolve both inflammation and secondary itch. Preferred when significant dermal inflammation is present, such as in eczema or contact dermatitis. Substantially more potent than Fenistil Gel.
• Myda-B (Betamethasone + Clotrimazole) — Combination topical steroid and antifungal When itch arises from concurrent skin inflammation and fungal infection, Myda-B addresses both components simultaneously. Not indicated for simple insect bite reactions.

Bottom line: For quick itch relief from insect bites or mild allergic reactions, Fenistil Gel is the appropriate first choice. For significant inflammatory skin conditions with intense itch, Elomet provides stronger anti-inflammatory relief. When itch is associated with a fungal infection, Myda-B covers both concerns.

Key drug interactions with Fenistil Gel:

• Oral antihistamines: Generally compatible; older sedating antihistamines may slightly potentiate each other
• CNS depressants and sedatives: Minimal risk due to very low systemic absorption, but exercise caution when applying over large areas
• Other topical medications: Avoid applying over the same area simultaneously
• Topical corticosteroids: Can be used together under medical guidance for dual anti-allergic action

Overall, Fenistil Gel carries very low interaction risk owing to minimal systemic absorption.

Expected onset and duration of action for Fenistil Gel:

• First 2-5 minutes: Immediate cooling and itch relief from Dimetindene Maleate's local anaesthetic action
• 15-30 minutes: Full H1-blocking effect — clear reduction in itch, redness, and swelling
• 3-6 hours: Duration of effect per application; reapply when symptoms return
• 1-3 days for insect bites: Symptoms typically resolve fully within 1-3 days with regular application

Apply Fenistil Gel as promptly as possible after an insect bite — early H1 blockade prevents the histamine response from escalating.

How to buy Fenistil Gel?

Order online at Intimo Life with nationwide delivery across Thailand in 1-3 business days. Discreet packaging — no product name on the outer box for your privacy.