Fungistop Topical is a clotrimazole 1% cream for fungal skin infections — athlete’s foot, ringworm, jock itch, thrush of the skin, and nappy rash caused by yeast. It is available from a pharmacy without a prescription, and the commonest reason it appears not to work is stopping too soon.
What is Fungi Stop Topical?
The South African Medicine Price Registry lists Fungistop Topical as a Schedule 1 cream containing clotrimazole 10 mg/g — a 1% cream.
Several other creams on the register are identical in content — Canex Topical, Closcript Topical and others all contain clotrimazole 1%. They differ in price and packaging, not in the medicine. See also Canex V, the vaginal formulation of the same ingredient.
Clotrimazole is an imidazole antifungal. It blocks an enzyme fungi need to make ergosterol, the sterol that gives a fungal cell membrane its structure. Without it the membrane becomes leaky and the cell dies. Human cells use cholesterol instead, which is why clotrimazole affects fungi and largely leaves skin alone.
Its breadth is its main advantage. Clotrimazole works against both dermatophytes — the fungi causing athlete’s foot, ringworm and jock itch — and yeasts, particularly Candida, which causes thrush, nappy rash and skin-fold infections. This makes it a sensible first choice when you are not certain which you are dealing with.
Compared with terbinafine, the trade-off is straightforward:
| Clotrimazole | Terbinafine | |
|---|---|---|
| Dermatophytes | Effective | More effective; kills rather than inhibits |
| Candida yeasts | Effective | Less effective |
| Typical course | 2–4 weeks, sometimes longer | 1–2 weeks |
| Best for | Uncertain diagnosis, yeast, skin folds, nappy rash | Athlete’s foot, ringworm, nails |
The single most important thing about using it: keep going after the rash looks better. Clotrimazole stops fungal growth more than it kills outright, so the skin clears visibly well before the fungus is gone. Stopping when it looks normal is the commonest reason it comes straight back, and people then conclude the cream does not work. Continue for one to two weeks beyond the point where the skin looks clear.
What is Fungi Stop Topical commonly used for?
- Athlete’s foot (tinea pedis) — itching, scaling and cracking between the toes.
- Ringworm (tinea corporis) — the ring-shaped, scaly, spreading patch with a clearer centre.
- Jock itch (tinea cruris) — in the groin and inner thighs.
- Candidal skin infection in warm moist folds — under the breasts, in the groin, under an abdominal fold, between fingers.
- Nappy rash caused by thrush, where the rash is beefy red with small satellite spots at the edges.
- Thrush of the skin around the nipples in breastfeeding, alongside treating the baby.
- Pityriasis versicolor, the patchy discolouration on the trunk.
- Fungal infection under a wedding ring or watch strap, or in any occluded area.
- Angular cheilitis — cracked, sore corners of the mouth, often candidal.
Things that determine whether it works:
Treat the feet even if only the groin itches. Jock itch is very often spread from athlete’s foot, and treating one without the other means it returns.
Keep the area dry. Fungi need warmth and moisture. Drying carefully between the toes and in skin folds, changing socks daily, alternating shoes, and wearing loose cotton clothing all matter as much as the cream.
Do not use a steroid cream on it. Applying a steroid to a fungal rash suppresses the redness briefly while the fungus spreads and loses its typical ring appearance — tinea incognito, which makes later diagnosis considerably harder. If a rash improved on a steroid cream and then worsened, this is the likely explanation.
Nails and scalp will not respond to cream. Fungal nail infection needs a nail preparation or tablets, and scalp ringworm always needs oral treatment — cream cannot reach fungus inside hair follicles.
How Fungi Stop Topical fits into this medicine category
| Group | Examples | Best against |
|---|---|---|
| Imidazoles | Clotrimazole (Fungistop), miconazole, ketoconazole | Both dermatophytes and yeasts |
| Allylamines | Terbinafine | Dermatophytes; faster, shorter courses |
| Polyenes | Nystatin | Candida only |
| Oral antifungals | Fluconazole, terbinafine, itraconazole | Nails, scalp, extensive or resistant infection |
| Topical steroids | Clomaderm | Not for fungal infection — makes it worse |
| Combination creams | Quadriderm and similar | Only where infection and inflammation coexist |
See the skin and wound care medicines hub.
What to check before using Fungi Stop Topical
Clotrimazole cream is well tolerated and few precautions apply. Speak to a pharmacist or doctor if:
- You are not sure the rash is fungal. A rash that is weeping, blistering, painful, rapidly spreading, or accompanied by fever is probably not simple ringworm.
- The rash is on the scalp or affects nails — cream will not clear either.
- You have diabetes, poor circulation, or a weakened immune system. Foot problems in diabetes need professional assessment early, and fungal infection can be the entry point for a serious bacterial infection.
- You are treating a baby, particularly under a nappy.
- You are pregnant or breastfeeding — clotrimazole cream is generally considered acceptable, but confirm.
- The rash keeps coming back, or has not responded to previous treatment.
- You have a known allergy to imidazole antifungals.
Practical points:
- Wash and dry the area thoroughly before applying.
- Apply a thin layer two or three times daily, covering the rash and a margin of normal skin around it — fungus extends beyond the visible edge.
- Continue for one to two weeks after the skin looks clear.
- Wash your hands afterwards, unless treating the hands.
- Do not cover with an airtight dressing unless directed.
- Wash towels, socks and bedding in hot water, and do not share them.
- Note that clotrimazole cream can damage latex condoms and diaphragms — relevant when treating the groin area.
Possible cautions and when to ask a pharmacist or doctor
Common effects are local and mild: burning, stinging, itching, redness or peeling where applied, usually settling after the first few applications.
Stop and seek advice for:
- Worsening redness, swelling, blistering or severe itching — possible allergy to the cream itself.
- A rash spreading beyond the treated area.
Get emergency help for facial swelling with difficulty breathing, or a widespread blistering rash.
See a doctor rather than continuing to self-treat if:
- There is no improvement after two weeks, or it is worse.
- The rash is weeping, crusted, painful, or has pus — that suggests bacterial infection needing an antibiotic.
- You have fever, or feel unwell.
- The rash is spreading rapidly, or you have red streaks spreading from it.
- It is on the scalp or nails.
- You have diabetes and a foot problem, where the threshold should be low.
- The infection keeps returning — recurrent fungal infection sometimes signals diabetes, a weakened immune system, or an untreated reservoir such as infected nails.
- You are treating an infant and it is not settling.
One practical point about recurrence. If athlete’s foot keeps coming back, the usual reservoir is your shoes and your toenails. Treating the skin without addressing either is why it returns each summer — antifungal powder in shoes, alternating pairs, and getting a thickened nail assessed all help more than another tube of cream.
Related medicine guides
Frequently asked questions
What is Fungistop Topical used for? Fungal skin infections — athlete’s foot, ringworm, jock itch, thrush of the skin, and nappy rash caused by yeast. It contains clotrimazole 1%.
How long do I use it? Two to four weeks typically, and continue for one to two weeks after the skin looks clear. Stopping when it looks better is the commonest reason it returns.
Is it the same as Canex or Closcript? In content, yes — all are clotrimazole 1% creams. They differ in price and packaging.
How is it different from terbinafine? Clotrimazole works against both dermatophytes and yeasts; terbinafine is stronger against dermatophytes but weaker against Candida. Clotrimazole is the better choice when the diagnosis is uncertain or yeast is likely.
Can I use it for nappy rash? For nappy rash caused by thrush — beefy red with small satellite spots — yes. Ask a pharmacist if you are unsure, and check with a clinic for a young infant.
Can I use a steroid cream with it? Not on your own. A steroid alone on a fungal rash makes it spread and harder to diagnose.
Will it treat my nail or scalp? No. Nails need a nail preparation or tablets; scalp ringworm always needs oral treatment.
Why does my athlete’s foot keep coming back? Usually a reservoir in your shoes or toenails. Antifungal powder in shoes, alternating pairs, and getting a thickened nail assessed help more than another tube.
Does it affect condoms? Yes — clotrimazole cream can damage latex condoms and diaphragms. Relevant when treating the groin.