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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Brand Name
Ichthammol 20%
Generic Name
Ichthammol
Active Ingredient
IchthammolCategory
Non-Standardized Food Allergenic Extract [EPC]
Variants
2
This page is for informational purposes only and does not replace medical advice. Before using any prescription or over-the-counter medication for Ichthammol 20%, you must consult a qualified healthcare professional.
Detailed information about Ichthammol 20%
Ichthammol is a sulfonated shale oil derivative used primarily in dermatology for its anti-inflammatory, antibacterial, and 'drawing' properties. It is classified under several non-standardized extract categories and is used to treat boils, splinters, and various inflammatory skin disorders.
For most dermatological conditions, the standard application of Ichthammol involves the use of a 10% or 20% ointment. The dosage is typically determined by the size of the affected area rather than a fixed milligram amount. For localized lesions such as boils or splinters, a generous layer of ointment should be applied directly to the site. This is often followed by the application of a protective bandage to prevent staining of clothing and to enhance the 'drawing' effect through occlusion (covering). The application is generally repeated 1 to 3 times daily, depending on the severity of the condition and the advice of a healthcare professional.
In the treatment of chronic inflammatory conditions like psoriasis or eczema, Ichthammol may be applied in a thinner layer over a larger surface area. In these cases, it is often used as a second-line therapy when other treatments have failed or are contraindicated. The duration of treatment should be guided by clinical response, but long-term use should be monitored by a physician to prevent skin sensitization.
Ichthammol is generally considered safe for pediatric use when applied under the supervision of a healthcare provider. However, specific age-based dosing has not been standardized by the FDA. For children, it is often recommended to use the 10% formulation rather than the 20% to minimize the risk of skin irritation. Parents should apply only a small amount to the affected area and monitor closely for signs of an allergic reaction. Ichthammol should not be used on infants under the age of 6 months without direct medical authorization, as their skin barrier is significantly more permeable.
Because systemic absorption of Ichthammol is minimal, dosage adjustments are typically not required for patients with renal impairment. However, in cases where large surface areas are treated for extended periods, caution is advised, and kidney function should be monitored if systemic toxicity is suspected.
There are no specific guidelines for dosage adjustment in patients with hepatic impairment. As with renal impairment, the localized nature of the treatment makes systemic complications unlikely, but clinical judgment should be exercised in patients with severe liver disease.
Elderly patients often have thinner, more fragile skin (atrophic skin). Consequently, they may be more susceptible to localized irritation from Ichthammol. It is often prudent to start with a lower concentration (10%) and a less frequent application schedule. Healthcare providers should also consider the potential for polypharmacy and the cumulative effect of multiple topical treatments.
Ichthammol is for external use only. It should never be ingested or applied to mucous membranes (such as the eyes, mouth, or inside the nose). Before application, the affected area should be gently cleaned with mild soap and water and patted dry. Apply the ointment using a clean applicator or gloved finger to avoid contamination. Because Ichthammol has a strong, pungent odor and a dark color that can permanently stain fabrics, it is highly recommended to cover the treated area with a clean gauze bandage or adhesive dressing. Store the medication at room temperature, away from direct sunlight and moisture, and ensure the cap is tightly closed after each use.
If you miss a dose of Ichthammol, apply it as soon as you remember. However, if it is almost time for your next scheduled application, skip the missed dose and resume your regular dosing schedule. Do not apply a double amount of ointment to make up for a missed application, as this may increase the risk of localized skin irritation.
An overdose of topical Ichthammol is unlikely to cause systemic toxicity. However, excessive application can lead to severe localized skin irritation, redness, or a burning sensation. If the ointment is accidentally swallowed, contact a poison control center or seek emergency medical attention immediately. Symptoms of ingestion may include gastrointestinal distress, nausea, or vomiting. In clinical settings, treatment for ingestion is primarily supportive, focusing on maintaining airway patency and managing symptoms.
> Important: Follow your healthcare provider's dosing instructions exactly. Do not adjust your dose or frequency of application without medical guidance.
While Ichthammol is generally well-tolerated, the most common side effects involve localized skin reactions. Due to its chemical nature, many patients experience a mild burning or stinging sensation immediately following application. This is usually transient and subsides as the medication settles. Other common effects include:
Some patients may experience more pronounced reactions, particularly those with sensitive skin or pre-existing dermatological conditions. These include:
Ichthammol is intended for topical use only. It is critical that patients understand the medication's potential to cause localized irritation and its significant staining properties. Patients should avoid contact with eyes, nose, mouth, and other mucous membranes. If accidental contact occurs, the area should be flushed thoroughly with cool water. Ichthammol should not be applied to deep puncture wounds, animal bites, or serious burns without consulting a healthcare provider first, as the 'drawing' effect may not be appropriate for all types of tissue injury.
No FDA black box warnings for Ichthammol. This medication has a long history of use with a favorable safety profile when applied topically to intact or mildly broken skin for the indications of boils, splinters, and inflammatory dermatoses.
While rare, hypersensitivity to sulfonated shale oils can occur. Patients with a known allergy to sulfur or sulfur-containing medications should exercise extreme caution. An initial patch test—applying a small amount to a tiny area of skin for 24 hours—is often recommended for patients with a history of multiple chemical sensitivities.
Ichthammol is chemically incompatible with several substances. It should NEVER be used simultaneously on the same skin area with:
While systemic interactions are rare, the use of Ichthammol alongside other topical agents should be carefully managed:
Ichthammol must NEVER be used in the following circumstances:
Conditions requiring careful risk-benefit analysis by a healthcare provider include:
Ichthammol is classified as FDA Pregnancy Category C. This means that adequate and well-controlled studies in pregnant women are lacking. While topical application results in minimal systemic absorption, the safety of Ichthammol during pregnancy has not been definitively established. It should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. There is no known data regarding its use in fertility treatments or its effect on human teratogenicity. Healthcare providers typically recommend avoiding application to large surface areas during the first trimester.
It is not known whether the components of Ichthammol are excreted in human milk. However, because systemic absorption is low, the risk to a nursing infant is considered minimal. The primary concern during breastfeeding is the potential for the infant to ingest the medication or come into contact with it if it is applied to the breast or chest area. If Ichthammol must be used, it should not be applied to the nipple or areola. Always wash hands thoroughly after application to prevent transfer to the infant.
Ichthammol is frequently used in children for the treatment of boils and the removal of splinters. It is generally considered safe for children over 6 months of age. However, pediatric skin is thinner and more absorbent than adult skin, increasing the risk of localized irritation. Growth effects have not been reported with topical use. Ichthammol is NOT approved for the treatment of diaper dermatitis (diaper rash) unless specifically directed by a pediatrician, as the occlusive environment of a diaper can significantly increase the potency and irritancy of the medication.
Ichthammol's primary therapeutic effect is derived from its high sulfur content and its unique chemical structure as a sulfonated shale oil. It functions through Acidifying Activity [MoA], which lowers the pH of the skin's surface. This acidification is crucial for maintaining the skin's barrier function and inhibiting the colonization of bacteria. Additionally, its Ammonium Ion Binding Activity [MoA] and Calcium Chelating Activity [MoA] allow it to modulate the local inflammatory environment. By chelating calcium, it may inhibit the calcium-dependent activation of inflammatory mediators. Its 'drawing' action is a physical-chemical process where the ointment's high osmolarity and keratoplastic effects soften the skin and create an osmotic gradient that pulls fluid and foreign material toward the surface.
The onset of action for Ichthammol's anti-inflammatory effect is typically observed within 24 to 48 hours of consistent application. The 'drawing' of a boil or splinter may take 1 to 3 days. Unlike corticosteroids, Ichthammol does not cause rapid vasoconstriction, but rather a slow modulation of the inflammatory response. Tolerance development is rare, although skin sensitization (allergic contact dermatitis) can occur with prolonged use, which may be mistaken for a lack of efficacy.
Common questions about Ichthammol 20%
Ichthammol is primarily used as a 'drawing salve' to treat localized skin infections such as boils, carbuncles, and abscesses. It works by softening the skin and using osmotic pressure to pull pus and inflammatory debris to the surface for easier drainage. Additionally, it is frequently used to help remove deeply embedded splinters or stingers by softening the surrounding tissue. Beyond these uses, healthcare providers may recommend it for chronic inflammatory skin conditions like eczema or psoriasis due to its mild antibacterial and anti-itch properties. It is a versatile, traditional remedy that remains effective for various minor dermatological issues.
The most common side effects of Ichthammol are localized to the area where the ointment is applied. Many patients report a mild burning, stinging, or itching sensation immediately after application, which usually fades quickly. Because it is a sulfur-rich product, it has a very strong, pungent odor that some people find unpleasant. Another 'side effect' is its ability to stain skin a dark color temporarily and stain clothing or bandages permanently. While serious reactions are rare, some individuals may develop redness or a rash, indicating a localized sensitivity to the medication.
There is no known direct interaction between topical Ichthammol and alcohol consumption. Because the medication is applied to the skin and very little is absorbed into the bloodstream, drinking alcohol is generally considered safe during treatment. However, alcohol can cause blood vessels to dilate (vasodilation), which might worsen the redness or itching associated with certain skin conditions like rosacea or eczema. If you are treating a significant inflammatory condition, your doctor might suggest limiting alcohol to help your skin heal more effectively. Always follow the specific advice provided by your healthcare professional.
Ichthammol is classified as FDA Pregnancy Category C, meaning there is limited research on its effects during human pregnancy. While the risk is generally considered low because it is a topical treatment with minimal systemic absorption, it should only be used if clearly needed and recommended by a doctor. Pregnant women should avoid applying it to large areas of the body or using it for extended periods without medical supervision. If you are pregnant or planning to become pregnant, discuss the risks and benefits with your healthcare provider before starting Ichthammol. It is always best to use the most conservative treatment options during pregnancy.
The time it takes for Ichthammol to work depends on the condition being treated. For drawing out a splinter or a small boil, you may see results within 12 to 24 hours, although it often takes 2 to 3 days of consistent application. For chronic conditions like eczema or psoriasis, it may take several days or even a week to notice a reduction in redness and itching. If you are using it for a boil and do not see any improvement after 3 days, or if the pain and swelling get worse, you should contact your doctor. It is important to be patient but also to monitor for signs that the infection might be spreading.
Yes, you can stop using Ichthammol suddenly without experiencing any withdrawal symptoms or physical dependence. Unlike some steroid creams, there is no 'rebound effect' where the skin condition gets significantly worse just because you stopped the medication. However, if the underlying issue—such as a deep splinter or an unfinished boil—has not been fully resolved, the symptoms may return once the 'drawing' action stops. It is usually best to continue the treatment until the foreign body is removed or the infection has completely drained and begun to heal. Consult your doctor if your symptoms return after you stop using the ointment.
If you miss a dose of Ichthammol, simply apply it as soon as you remember. If it is almost time for your next scheduled application, skip the missed dose and continue with your regular routine. Do not apply extra ointment to 'make up' for the missed dose, as this will not make the medication work faster and may increase the risk of skin irritation. Consistency is helpful for the 'drawing' effect, so try to keep a regular schedule, but a single missed application is unlikely to significantly delay your recovery. If you find it hard to remember, try applying it at the same time each day, such as after your morning and evening shower.
No, Ichthammol does not cause weight gain. Weight gain is a common side effect of systemic medications like oral corticosteroids or certain antidepressants, but Ichthammol is a topical agent that acts locally on the skin. Because it does not enter the bloodstream in significant amounts, it has no effect on your metabolism, appetite, or fat distribution. If you notice unusual weight gain while using Ichthammol, it is likely due to another factor, such as a different medication or a separate health condition. You should discuss any unexpected changes in your weight with your healthcare provider.
Ichthammol can generally be used alongside oral medications, but you should be cautious when using other topical products on the same area of skin. It should not be mixed with products containing alkaloids, heavy metal salts (like silver), or strong acids, as these can cause a chemical reaction that irritates the skin or makes the medications ineffective. If you are using other medicated creams or ointments, it is best to apply them at different times of the day or consult your pharmacist. Always provide your doctor with a full list of all medications and supplements you are using to ensure there are no hidden interactions.
Yes, Ichthammol is widely available as a generic medication and is often sold under names like 'Drawing Salve' or 'Ichthammol Ointment 20%.' Because it is a traditional remedy that has been around for many decades, many different manufacturers produce it, making it an affordable option for most patients. You can find it over-the-counter (OTC) at most pharmacies and drugstores, as well as in prescription-strength formulations if required by your doctor. Generic versions are required to meet the same quality standards as brand-name products, so they are just as effective for treating boils, splinters, and minor skin irritations.
Other drugs with the same active ingredient (Ichthammol)
Rarely, patients may develop a more systemic-like sensitivity to Ichthammol components. This can manifest as:
> Warning: Stop taking Ichthammol and call your doctor immediately if you experience any of the following serious symptoms. While extremely rare for a topical agent, systemic absorption or severe allergic reactions can occur.
The long-term use of Ichthammol is not associated with the same risks as long-term corticosteroid use (such as skin thinning or striae). However, chronic use can lead to 'sensitization,' where the skin becomes increasingly reactive to the medication over time. This can result in chronic contact dermatitis. Furthermore, because Ichthammol is a complex mixture of hydrocarbons, there have been historical concerns regarding the presence of polycyclic aromatic hydrocarbons (PAHs). Modern manufacturing processes are designed to minimize these, but long-term, large-scale use should always be conducted under medical supervision to monitor for any unusual skin changes or malignancies.
As of 2026, there are no FDA black box warnings for Ichthammol. It is considered a safe medication when used as directed for localized skin conditions. However, its use in specialized EPC categories like 'Live Vaccinia Virus Vaccine' or 'Inactivated Japanese Encephalitis Virus Vaccine' (as listed in some regulatory cross-references) would be subject to the specific warnings of those vaccine products, rather than the Ichthammol component itself.
Report any unusual symptoms or persistent skin changes to your healthcare provider immediately. Your doctor may choose to perform a 'patch test' if they suspect you are developing a sensitivity to the medication.
There are no documented cases of hepatotoxicity or nephrotoxicity resulting from the standard topical use of Ichthammol. However, because it is classified in some databases under Nitrogen Binding Agent [EPC], those with metabolic disorders affecting nitrogen clearance should discuss use with their specialist if large-scale application is planned.
There is no evidence to suggest that topical Ichthammol has any effect on mental health, suicidality, or cardiac conduction (QT interval). The medication does not cross the blood-brain barrier in significant quantities and does not interact with cardiac ion channels.
For most patients, routine lab tests are not necessary while using Ichthammol. However, for those using the medication over large surface areas for chronic conditions like psoriasis, healthcare providers may occasionally monitor:
Ichthammol does not cause drowsiness, dizziness, or visual disturbances. It is safe to drive or operate heavy machinery while using this medication, provided the bandaging of the treated area does not interfere with physical movement or safety equipment.
There are no known contraindications between topical Ichthammol use and alcohol consumption. However, alcohol can sometimes exacerbate inflammatory skin conditions like rosacea or psoriasis, so moderation is generally advised for patients treating these disorders.
Ichthammol does not require a tapering period. It can be discontinued abruptly without the risk of withdrawal syndrome. However, if the underlying condition (such as a boil or eczema) has not fully resolved, symptoms may return upon discontinuation. If you experience a 'rebound' of inflammation, consult your healthcare provider for alternative therapies.
> Important: Discuss all your medical conditions, including any history of skin cancer or chronic infections, with your healthcare provider before starting Ichthammol.
There are no documented interactions between topical Ichthammol and specific foods. Unlike some oral medications, Ichthammol's efficacy is not affected by the consumption of dairy, grapefruit, or high-fat meals. However, maintaining a balanced diet is always recommended to support overall skin health and wound healing.
Patients should be cautious when using herbal supplements that increase skin sensitivity to light or chemical irritants, such as:
Ichthammol is not known to interfere with standard blood or urine laboratory tests. However, if the ointment is present on the skin during a skin biopsy or a patch test for other allergens, it must be thoroughly cleaned off to avoid false-positive results or interference with the pathological examination.
Most interactions with Ichthammol are pharmacodynamic (how the drugs affect the body together) rather than pharmacokinetic (how the body processes the drugs). The primary mechanism is chemical incompatibility or additive irritation. Because Ichthammol acts as a Calcium Chelating Activity [MoA] agent, it can theoretically interfere with other topical medications that rely on calcium ions for their stability or activity.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, including those applied to the skin.
Patients who are sensitive to sulfur-containing compounds or certain petroleum-derived products may exhibit cross-sensitivity to Ichthammol. While it is not the same as 'sulfa' antibiotics, the sulfur groups in Ichthammol can trigger reactions in highly sensitized individuals. Always inform your healthcare provider if you have had reactions to other 'black salves' or coal tar preparations.
> Important: Your healthcare provider will evaluate your complete medical history and the specific nature of your skin lesion before prescribing Ichthammol.
Clinical studies of Ichthammol did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range (10% ointment). Geriatric patients are at a higher risk for skin tears and chronic dryness; therefore, the 'drawing' effect of Ichthammol must be monitored to ensure it does not lead to excessive skin breakdown. There are no specific concerns regarding fall risk or reduced renal clearance at standard topical doses.
For patients with a GFR (Glomerular Filtration Rate) below 30 mL/min, extensive use of Ichthammol should be avoided. While topical use is generally safe, the nitrogen-binding properties and sulfonated hydrocarbons could theoretically place an additional burden on impaired kidneys if absorbed systemically in large quantities. No specific dose adjustments are provided for dialysis patients, but application should be limited to small, localized areas.
In patients with severe hepatic impairment (Child-Pugh Class C), the metabolism of any absorbed hydrocarbons may be delayed. While this is unlikely to cause systemic toxicity from a single boil treatment, chronic use for conditions like psoriasis should be monitored by a physician. There are no established dose-adjustment protocols based on liver enzyme elevations.
> Important: Special populations require individualized medical assessment to ensure the benefits of treatment outweigh any potential risks.
| Parameter | Value |
|---|---|
| Bioavailability | <5% (Topical) |
| Protein Binding | Negligible |
| Half-life | Not established (Local action) |
| Tmax | 2-4 hours (Local tissue saturation) |
| Metabolism | Hepatic (Minor absorbed fraction) |
| Excretion | Renal (Minor absorbed fraction) |
Ichthammol is classified as a sulfonated shale oil derivative. Within regulatory frameworks, it is often grouped under Non-Standardized Food Allergenic Extract [EPC] or Standardized Chemical Allergen [EPC]. It is related to other bituminosulfonates but is distinct from coal tar, which is derived from coal rather than oil shale. Compared to coal tar, Ichthammol is generally considered to have a lower risk of photosensitivity and a different profile of polycyclic aromatic hydrocarbons.