Flonida Cream

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What Is Flonida Cream?

Flonida Cream is a topical fluorouracil (5-FU) 5% w/w cream from Yash Pharma, supplied in a 10 g tube. Fluorouracil is a pyrimidine antimetabolite chemotherapy drug first synthesised in 1957 and widely used as an intravenous cytotoxic for gastrointestinal, breast and head-and-neck cancers. The topical formulation was introduced in the 1960s after the observation that IV 5-FU cleared actinic keratoses on sun-exposed skin. Internationally branded as Efudix (UK, EU), Efudex (US), Adrucil (IV form), Carac, Tolak, Fluoroplex, and generics. It remains the most-used topical chemotherapy for field-effect skin cancer and pre-cancer.

How Does Flonida Cream Work?

• Metabolised to 5-fluorodeoxyuridine monophosphate (FdUMP), which inhibits thymidylate synthase (TS) — the enzyme that converts dUMP to dTMP. Without dTMP, DNA synthesis halts.
• Also incorporates into RNA as FUTP and into DNA as FdUTP, disrupting transcription and triggering apoptosis in rapidly dividing cells.
• Selectively destroys rapidly-proliferating dysplastic and malignant keratinocytes, sparing normal, slowly-dividing keratinocytes. The selectivity is imperfect, which is why normal skin at the treatment site also gets inflamed.
• Minimal systemic absorption from topical application to intact skin (<10% of applied dose), but absorption rises sharply when applied to large surface areas, eroded or ulcerated skin, or occluded under dressings.
• Metabolism: systemic 5-FU is catabolised by dihydropyrimidine dehydrogenase (DPD). Patients with complete or partial DPD deficiency (~3-5% of the population for partial deficiency; ~0.2% complete) cannot clear 5-FU and suffer severe systemic toxicity even from topical application — this is an absolute contraindication.

The expected visible reaction sequence over the course of a 2-6 week treatment: mild redness (week 1) → intense erythema and burning (week 2-3) → erosion, crusting, weeping (week 3-4) → healing and re-epithelialisation (week 4-6) → residual pinker-than-surroundings skin fading over 1-2 months. This sequence is the mechanism of action and is NOT an adverse reaction. Patients often find it alarming; prior education is essential. Stopping early because the skin “looks bad” is the most common reason for treatment failure — the visible reaction signals that the drug is working.

When Flonida Cream Is Used

Licensed indications (under dermatology supervision and after biopsy confirmation where appropriate):

• Actinic keratoses (solar keratoses) — sun-induced pre-cancerous lesions on face, scalp, ears, dorsum of hands, forearms. Topical 5-FU is first-line for field-effect (multiple lesions over a broad area) treatment.
• Superficial basal cell carcinoma (sBCC) — biopsy-confirmed, on the trunk or extremities (not head/neck unless specifically directed), where surgical excision is impractical or cosmetically undesirable.
• Bowen’s disease (squamous cell carcinoma in situ) — biopsy-confirmed, well-defined, on the trunk or extremities.
• Keratoacanthoma (specialist use, specific subtypes only)

Flonida Cream is NOT για:

• Nodular or invasive basal cell carcinoma — needs surgical excision, Mohs surgery or radiotherapy
• Invasive squamous cell carcinoma — needs surgical excision
• Melanoma or melanoma-suspicious lesions
• Lesions without a histological diagnosis — biopsy must confirm the type of skin cancer first; topical 5-FU can flatten and partially treat an invasive cancer enough to delay surgical diagnosis while deeper disease progresses
• Routine wrinkles, sun damage or pigmentation (cosmetic use) — this is a chemotherapy drug, not a cosmetic
• Intertriginous or mucosal sites

Flonida Cream Dosage and Treatment Protocols

Standard Actinic Keratosis Protocol (Face, Scalp)

1. Wash the treatment area with a mild soap and lukewarm water; pat dry.
2. Apply a thin film of Flonida Cream directly onto the affected area and a short margin (1-2 cm) of surrounding skin; rub in gently with a gloved finger or a cotton bud.
3. Wash hands thoroughly after application. Do NOT touch eyes, lips, inside of nostrils, or mucous membranes with cream-contaminated hands.
4. Apply twice daily for 2-4 weeks on face and scalp. Treatment length is titrated against the clinical reaction — once a good inflammatory/erosive reaction is established, the target has been reached and treatment can be stopped.
5. No occlusive dressings. The cream is left uncovered to air — occlusion increases absorption and the severity of reaction beyond what is intended.
6. After stopping, the skin continues to heal over 2-6 weeks. Apply bland emollient (petroleum jelly, paraffin-based moisturiser) during the healing phase. NO cosmetics, NO sun exposure.

Superficial BCC / Bowen’s Disease Protocol

1. Biopsy must confirm diagnosis first. Superficial BCC on trunk / extremities, or Bowen’s disease, only — under specialist dermatology direction.
2. Apply twice daily for 3-6 weeks.
3. Treatment often looks worse and takes longer than AK treatment — expect intense inflammation, erosion and weeping over 2-3 weeks, then a slow healing phase.
4. Follow-up biopsy at 8-12 weeks is often recommended to confirm clearance. Recurrence rates at 5 years are 10-30% — annual dermatology follow-up for 5 years is standard.

Alternative Schedules

Your dermatologist may recommend a pulse schedule (e.g. 2 weeks on, 2 weeks off, repeat; or weekends-only for extended periods) to reduce severity of the inflammatory reaction in patients who cannot tolerate a standard 4-week course. Combination with calcipotriol (4-day regimen) or sequential imiquimod is used for severe field disease. These protocols belong to specialist dermatology — do not improvise on your own.

Expected Reaction Timeline — What to Expect

Παρενέργειες

• Expected (ALL patients): erythema, burning, stinging, erosion, crusting, weeping, tenderness at the treatment site — these ARE the therapeutic reaction
• Συχνές: pain, itching, dryness, photosensitivity, local oedema, transient hyper- or hypo-pigmentation
• Ασυνήθιστες: allergic contact dermatitis, milia formation during healing, residual telangiectasia at treatment site, scarring (usually mild)
• Σπάνια: Stevens-Johnson syndrome, photo-onycholysis if nails exposed, corneal damage if cream reaches the eye
• Serious (DPD-deficient patients, or large-area exposure): severe mucositis, diarrhoea, bone-marrow suppression, neurotoxicity — systemic 5-FU toxicity can occur even from topical application in DPD-deficient patients and requires hospital management

Αντενδείξεις & Προειδοποιήσεις

• Pregnancy (Category X) — ABSOLUTE. 5-FU is teratogenic. Women of childbearing potential must use effective contraception during and for at least 3 months after treatment. Pregnancy test before initiation is standard.
• Breastfeeding — ABSOLUTE. Do not breastfeed during treatment.
• Known or suspected DPD (dihydropyrimidine dehydrogenase) deficiency — ABSOLUTE. Patients with family history of unexplained severe reactions to fluoropyrimidines (capecitabine, systemic 5-FU) should be screened before topical 5-FU.
• Known hypersensitivity to fluorouracil or any excipient
• Application to mucous membranes, lips, eyelids, inside of nostrils — mucosal absorption is much higher than cutaneous and severe reactions can result
• Biopsy-unconfirmed lesions — treating an undiagnosed lesion topically can mask the presentation of invasive cancer beneath
• Nodular or invasive BCC or invasive SCC — these require surgical management
• Children — not indicated in paediatric skin conditions
• Immunosuppressed transplant patients — specialist dermatology decision; risk of delayed healing and systemic absorption
• Occlusive dressings — do not occlude unless specifically directed; occlusion dramatically increases absorption and severity of reaction

Αλληλεπιδράσεις Φαρμάκων

• Systemic fluoropyrimidines (capecitabine, systemic 5-FU, tegafur) — do not use concurrently; severe toxicity risk
• Brivudine, sorivudine (antivirals) — inhibit DPD and can precipitate fatal systemic 5-FU toxicity even from topical application; ABSOLUTE avoid
• Other topical cytotoxic or immunomodulator agents (imiquimod, ingenol mebutate, diclofenac gel) — do not apply on the same area without specialist direction; sequential use is standard in some field-treatment protocols
• Topical corticosteroids — suppress the therapeutic inflammatory reaction; generally avoided during active treatment, may be used briefly for intolerable reactions under specialist direction
• Βαρφαρίνη — IV 5-FU potentiates warfarin markedly; topical 5-FU has little systemic effect at normal use but monitor INR more closely if patient is on warfarin and using extensive topical 5-FU
• Φαινυτοΐνη — systemic 5-FU increases phenytoin levels; topical use rarely clinically significant

Sun Exposure Rules

Strict sun avoidance during treatment and for 1-2 months afterwards:

• Stay out of direct sunlight where possible during the treatment course. If outdoors, wear a broad-brimmed hat and fully cover the treated area.
• Do NOT use sunscreen directly on the inflamed/eroded treatment area during active reaction — sunscreen ingredients can sting severely and interfere with healing. Physical barrier (hat, clothing) instead.
• Once the skin has fully re-epithelialised and is healed (usually 6-8 weeks from treatment start), resume daily broad-spectrum SPF 50+ sunscreen — the treated skin is more sun-sensitive for 1-2 months and long-term sun avoidance is the cornerstone of preventing future actinic keratoses and skin cancer.
• No tanning beds, ever, in patients with a history of actinic keratoses or non-melanoma skin cancer.

Αποθήκευση και Διάρκεια Ζωής

Store Flonida Cream at 15-25°C in the original tube, away from direct sunlight. Do NOT freeze. Replace cap tightly after use. Κρατήστε μακριά από παιδιά και κατοικίδια — this is a cytotoxic drug and accidental ingestion or ocular contact requires urgent medical attention. Dispose of empty tubes per local cytotoxic-waste regulations (in many jurisdictions, return to a pharmacy — not domestic waste).

Συχνές Ερωτήσεις

Why does my skin look worse while using Flonida Cream?

The visible inflammatory reaction — redness, burning, erosion, crusting, weeping — IS the therapeutic mechanism. 5-FU is destroying dysplastic cells, and the immune clearance of the debris produces the inflammation. Patients who do not get a good reaction usually do not get a good clinical result. Stopping early because “it looks bad” is the most common reason for treatment failure. Your dermatologist will guide you on how intense a reaction to aim for and when to stop.

Can I use Flonida Cream on a spot I think might be skin cancer, without a biopsy?

No. Treating an undiagnosed lesion with topical 5-FU can flatten and partially clear an invasive cancer enough to mask its appearance while deeper disease progresses unchecked. All suspected skin cancer lesions need a biopsy and histological diagnosis before treatment — topical 5-FU is not appropriate for nodular BCC, invasive SCC, melanoma, or any lesion of uncertain diagnosis.

What is DPD deficiency and why does it matter for a topical cream?

Dihydropyrimidine dehydrogenase (DPD) is the enzyme that detoxifies 5-FU systemically. About 3-5% of people have partial deficiency; 0.2% have complete deficiency. In deficient patients, even the small amount of 5-FU absorbed from topical application can accumulate to toxic levels, producing severe mucositis, diarrhoea, bone-marrow failure and neurotoxicity. A family history of severe reactions to any fluoropyrimidine drug (capecitabine, systemic 5-FU, tegafur) is a red flag — screen before starting topical 5-FU. If in doubt, discuss with your dermatologist or oncologist.

Can I use makeup or sunscreen during treatment?

No cosmetics on the treated area during active treatment — they can cake into eroded skin, increase irritation, and inhibit healing. No sunscreen directly on the treatment area either; use physical sun protection (hat, long sleeves, umbrella) instead. Once healing is complete (6-8 weeks), restart daily broad-spectrum SPF 50+ sunscreen as long-term prevention.

Τι γίνεται αν χάσω μια δόση;

Apply the next dose at the regularly scheduled time. Do not double up. Missing an occasional dose does not compromise the overall course meaningfully.

Is pregnancy really an absolute contraindication — it is only a skin cream?

Yes, absolutely. Enough 5-FU is absorbed from topical application to be teratogenic in animal studies, and there are case reports of fetal malformations after exposure in pregnancy. 5-FU is assigned Pregnancy Category X — the highest risk category, meaning the risk in pregnancy outweighs any possible benefit. Effective contraception is mandatory during and for at least 3 months after treatment. If you become pregnant during treatment, stop immediately and contact your doctor.

Can someone else touch my treated skin?

Avoid skin-to-skin contact of the treated area with other people — particularly children and pregnant women — until you have washed the treatment area and your hands. Wash your hands after every application. The residue on clothing or bedding is not a meaningful exposure risk to others.

What are the alternatives to Flonida Cream?

For actinic keratoses: cryotherapy (liquid nitrogen), imiquimod cream, diclofenac 3% gel, photodynamic therapy (PDT), ingenol mebutate. For superficial BCC: imiquimod, PDT, surgical excision, curettage and electrodessication, Mohs micrographic surgery. For invasive skin cancer: surgery (excision or Mohs), radiotherapy. Your dermatologist will recommend the best option based on lesion type, size, location, your skin type, other medical conditions, and treatment logistics.

Where can I order Flonida Cream online?

You can order Flonida Cream from MedsBase in standard pack sizes (10 g tube). Orders ship worldwide with discreet packaging. Topical fluorouracil is a specialist-supervised cytotoxic medicine in all jurisdictions; use only under dermatology supervision and after a biopsy-confirmed diagnosis.

Related Dermatology Products on MedsBase

• Tenovate Cream (clobetasol) — very-potent topical corticosteroid for inflammatory dermatoses (NOT for use on 5-FU treatment sites)
• A-Ret Gel (tretinoin) — topical retinoid used for photodamage, mild AKs, and adjunctive sun-damaged skin maintenance
• Retino-A Cream (tretinoin) — tretinoin cream for photodamaged skin
• T-Bact Ointment (mupirocin) — topical antibiotic if secondary infection develops during the erosive phase of 5-FU treatment

Χρήσιμη ανάγνωση: Κριτικές πελατών MedsBase.

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