Comprehensive medication guide to Denorex Extra Strength including estimated pricing, availability information, side effects, and how to find it in stock at your local pharmacy.
Estimated Insurance Pricing
Denorex Extra Strength is an OTC product and is not covered by standard health insurance. However, it is FSA and HSA eligible under the CARES Act of 2020 — no prescription required for reimbursement.
Estimated Cash Pricing
$8–$15 retail for a 10 oz bottle at most major retailers; as low as $9/bottle in a 6-pack with Amazon Subscribe & Save; store-brand 3% salicylic acid generics available for $5–$8.
Medfinder Findability Score
88/100
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Denorex Extra Strength is an over-the-counter (OTC) medicated 2-in-1 shampoo and conditioner used to treat dandruff, seborrheic dermatitis, and scalp psoriasis. No prescription is required. The current formulation — in use since August 2012 — contains 3% salicylic acid as its active ingredient, the maximum concentration available OTC in a shampoo.
The product was originally formulated with coal tar as its active ingredient. In August 2012, coal tar was replaced with salicylic acid following a California Proposition 65 legal settlement. This reformulation created significant patient confusion, as many longtime users noticed the product worked differently for their scalp conditions — particularly those with scalp psoriasis who relied on coal tar's antiproliferative mechanism.
The current Denorex Extra Strength is widely available at Walmart, Walgreens, CVS, Kroger, Target, and Amazon. It is marketed under the trademark slogan "The Tingle Tells You It's Working," referring to the menthol cooling sensation in the formula.
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Denorex Extra Strength works through the keratolytic action of salicylic acid (3%). Salicylic acid is a beta-hydroxy acid (BHA) that penetrates the outer lipid layer of scalp skin and breaks down the desmosomes — the connections holding dead corneocytes (skin cells) together. This accelerates natural desquamation (shedding), allowing the loosened scale and flakes to be washed away.
Additionally, salicylic acid has mild anti-inflammatory properties that help reduce scalp redness and irritation. The menthol in the formula activates cold-sensing TRPM8 receptors in the skin, producing the signature cooling and tingling sensation that the brand references in its marketing. Menthol also contributes mild antipruritic (anti-itch) relief.
Unlike the original coal tar formula, salicylic acid does not slow the overproduction of scalp skin cells — the underlying mechanism that drives psoriasis and severe seborrheic dermatitis. This is why patients with scalp psoriasis may find the current formulation less effective for long-term disease control, though it remains useful for scale removal.
3% Salicylic Acid — Shampoo + Conditioner (2-in-1)
10 oz bottle. Apply to wet hair, massage into scalp, leave briefly, rinse. Use at least twice weekly.
3% Salicylic Acid — Shampoo only
Standard shampoo formulation without conditioner. Same active ingredient and directions.
The current Denorex Extra Strength with 3% salicylic acid is not on any FDA drug shortage list and is widely available at major retailers across the United States. It carries a findability score of 88/100, indicating it is reliably stocked with only minor gaps at smaller or rural locations.
The most common "availability" issue patients experience is actually confusion about the 2012 formula change — they're searching for a product (the original coal tar formula) that no longer exists under this name. The current salicylic acid version is genuinely easy to find at Walmart, Walgreens, CVS, Kroger, and Amazon.
If you're having trouble locating a specific Denorex product variant (such as the coal tar Severe Itch formula), medfinder calls pharmacies near you to confirm real-time availability and texts you the results — eliminating wasted trips.
Denorex Extra Strength is an OTC product — no prescription or DEA authorization is required. Any healthcare provider can recommend it, or patients can self-select it from store shelves. It is not a scheduled or restricted product.
Dermatologists — frequently recommend medicated shampoos for scalp conditions
Primary Care Physicians (PCPs) — often manage mild to moderate dandruff and seborrheic dermatitis
Nurse Practitioners and Physician Assistants — can recommend and advise on OTC scalp treatments
Pharmacists — excellent resource for OTC product guidance and alternatives
Telehealth providers can also recommend Denorex Extra Strength and related OTC scalp treatments during virtual consultations, though they cannot issue a prescription for an OTC product. Telehealth is particularly useful when prescription-strength options are needed — ketoconazole 2% or clobetasol shampoo can be prescribed and sent to a pharmacy of the patient's choice.
No. Denorex Extra Strength is not a controlled substance. It is an over-the-counter (OTC) product that does not require a prescription and is not scheduled under the Controlled Substances Act. Salicylic acid, the active ingredient, has no abuse potential and no DEA scheduling.
As an OTC drug, Denorex Extra Strength can be purchased directly from any pharmacy, grocery store, or online retailer without a prescription, prior authorization, or pharmacist consultation. There are no refill restrictions, quantity limits, or prescriber requirements.
Most users tolerate Denorex Extra Strength well. Common side effects include:
Scalp tingling or mild burning (expected; caused by menthol and salicylic acid)
Scalp dryness with frequent use
Mild skin irritation at the application site
Eye irritation if product contacts eyes (rinse thoroughly)
Severe allergic reaction: hives, difficulty breathing, swelling of face/lips/tongue/throat — call 911
Salicylate toxicity (rare with scalp-only use): nausea, vomiting, dizziness, ringing in ears, rapid breathing
Severe skin irritation not present before use
Worsening of underlying scalp condition
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Denorex Severe Itch (1.8% Coal Tar)
The coal tar product from the Denorex brand. Best for scalp psoriasis and severe itch; slows skin cell overproduction.
Neutrogena T/Gel (0.5-1% Coal Tar)
Widely trusted OTC coal tar shampoo. Clinically proven for psoriasis and seborrheic dermatitis.
Nizoral A-D (1% Ketoconazole)
OTC antifungal shampoo targeting Malassezia yeast. Dermatologist first-line for seborrheic dermatitis.
Neutrogena T/Sal (3% Salicylic Acid)
Same active ingredient and concentration as Denorex Extra Strength. A direct OTC equivalent.
Selsun Blue Medicated (1% Selenium Sulfide)
Antifungal OTC shampoo for dandruff and seborrheic dermatitis. Good for maintenance.
Prefer Denorex Extra Strength? We can find it.
Benzoyl peroxide (topical)
moderateUsing both on the same skin area may cause excessive irritation, redness, or peeling. Avoid combination on the same scalp/skin area.
Tretinoin / Retinoids (topical)
moderateCombination with salicylic acid on the same area may cause excess peeling and irritation. Discuss with dermatologist if using for scalp.
Aspirin / Oral salicylates
minorCumulative salicylate load increases with topical and oral use simultaneously. Minor concern with scalp-only application.
Methotrexate
minorTheoretical interaction; salicylates may affect methotrexate renal clearance. Clinical significance very low with topical scalp use. Report all products to prescriber.
Warfarin
minorSalicylates can affect coagulation. Very low risk with topical scalp use; inform anticoagulation manager of all salicylate products.
Denorex Extra Strength is a trusted, widely available OTC scalp treatment that has been on the market for over 40 years. The August 2012 reformulation from coal tar to 3% salicylic acid changed how the product works — and patients with scalp psoriasis in particular may notice the difference. However, the current salicylic acid formula remains highly effective for dandruff and scalp buildup control.
If you need the original coal tar mechanism, Denorex Severe Itch (1.8% coal tar) and Neutrogena T/Gel are widely available OTC alternatives. For patients who have tried multiple OTC shampoos without success, prescription-strength options are available through a dermatologist or telehealth provider.
Need help finding Denorex Extra Strength or a specific scalp treatment at a pharmacy near you? medfinder calls pharmacies on your behalf and texts you which ones have what you're looking for — saving you time and wasted trips.
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