Loading...
Loading...
Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Non-Standardized Fungal Allergenic Extract [EPC]
Cladosporium Sphaerospermum is a non-standardized fungal allergenic extract used for the diagnosis and treatment of mold-related allergies through skin testing and subcutaneous immunotherapy (allergy shots).
Name
Cladosporium Sphaerospermum
Raw Name
CLADOSPORIUM SPHAEROSPERMUM
Category
Non-Standardized Fungal Allergenic Extract [EPC]
Drug Count
3
Variant Count
3
Last Verified
February 17, 2026
About Cladosporium Sphaerospermum
Cladosporium Sphaerospermum is a non-standardized fungal allergenic extract used for the diagnosis and treatment of mold-related allergies through skin testing and subcutaneous immunotherapy (allergy shots).
Detailed information about Cladosporium Sphaerospermum
References used for this content
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Cladosporium Sphaerospermum.
Cladosporium sphaerospermum belongs to a class of drugs called Non-Standardized Fungal Allergenic Extracts. In the world of clinical immunology and allergy medicine, this substance is not a medication used to treat an acute infection or a systemic disease in the traditional sense. Instead, it is a biological extract derived from the Cladosporium sphaerospermum fungus, one of the most common environmental molds found worldwide. These extracts are primarily utilized in two clinical capacities: as a diagnostic tool (via skin prick testing) to identify patients with Type I hypersensitivity to mold, and as a therapeutic agent in allergen immunotherapy (commonly known as 'allergy shots').
The FDA classifies these extracts as 'non-standardized' because, unlike medications with a single active chemical moiety, fungal extracts are complex mixtures of proteins, glycoproteins, and polysaccharides. The potency of Cladosporium sphaerospermum extracts is typically measured in Protein Nitrogen Units (PNU) or Weight/Volume (w/v) ratios, rather than standardized bioequivalent units. Historically, the use of fungal extracts dates back to the early 20th century, with the FDA's Panel on Review of Allergenic Extracts continuously evaluating their safety and efficacy under the Public Health Service Act.
At the molecular level, Cladosporium sphaerospermum allergenic extracts work by modulating the patient's immune system response to environmental mold spores. When used in immunotherapy, the goal is to induce 'immunological tolerance.' The process involves the repeated administration of the allergen in gradually increasing doses. This exposure triggers a shift in the body's T-cell response from a Th2-dominated profile (which promotes IgE production and allergic inflammation) to a Th1-dominated or T-regulatory (Treg) profile.
Specifically, the extract interacts with dendritic cells (antigen-presenting cells), which process the fungal proteins and present them to T-lymphocytes. Over time, this leads to the production of 'blocking antibodies' known as IgG4. These IgG4 antibodies compete with IgE for binding sites on the Cladosporium allergens. By 'blocking' the allergen before it can bind to IgE on the surface of mast cells and basophils, the extract prevents the release of inflammatory mediators like histamine, leukotrienes, and cytokines that cause hay fever, asthma, and other allergic symptoms.
Because Cladosporium sphaerospermum is a complex biological extract administered via subcutaneous injection or epicutaneous testing, its 'pharmacokinetics' differ significantly from synthetic small-molecule drugs.
The primary FDA-approved indications for Cladosporium sphaerospermum include:
Off-label, some clinicians may use these extracts in experimental protocols for certain types of hypersensitivity pneumonitis, though this is not a standard or widely recommended practice.
Cladosporium sphaerospermum extracts are typically available in the following forms:
> Important: Only your healthcare provider can determine if Cladosporium Sphaerospermum is right for your specific condition.
Dosage for Cladosporium sphaerospermum is highly individualized and must be determined by a board-certified allergist or immunologist. There is no 'standard' dose for all patients.
Cladosporium sphaerospermum extracts are used in children, but extreme caution is required. Dosing follows the same 'build-up' logic as adults, but the starting concentration may be even more dilute depending on the child's sensitivity level. Most allergists do not begin immunotherapy in children under the age of 5 due to the difficulty of communicating systemic symptoms and the risk of anaphylaxis.
No specific dose adjustments are required for patients with kidney disease, as the extract is not cleared primarily by the kidneys. However, the patient's overall health must be stable.
No dosage adjustments are defined for liver impairment. The immunological processing of the extract is independent of liver function.
Elderly patients (over 65) may have a higher risk of complications if they have underlying cardiovascular disease. Dosing should be conservative, and the use of beta-blockers (common in this age group) must be evaluated as they can complicate the treatment of an allergic reaction.
This extract is NEVER for self-administration at home. It must be administered in a clinical setting equipped to handle anaphylaxis.
If a dose is missed during the build-up phase, the next dose may need to be reduced or the previous dose repeated to ensure safety. If several weeks are missed during the maintenance phase, the allergist will typically 'back up' the dosage to a lower, safer level before resuming the maintenance schedule. Never attempt to 'double up' on doses.
An 'overdose' in the context of allergenic extracts usually refers to a dose that exceeds the patient's current threshold of tolerance, leading to a systemic reaction or anaphylaxis.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose without medical guidance.
Most patients receiving Cladosporium sphaerospermum immunotherapy will experience local reactions at the site of injection. These are generally not dangerous but can be uncomfortable.
> Warning: Stop taking Cladosporium Sphaerospermum and call your doctor immediately if you experience any of these.
There are no known long-term 'toxic' effects of Cladosporium sphaerospermum extracts on the liver, kidneys, or brain. The primary long-term risk is the development of 'new' sensitivities, though immunotherapy is generally thought to prevent the development of further allergies. In rare cases, chronic local inflammation at the injection site could lead to localized subcutaneous atrophy (thinning of the skin tissue).
While Cladosporium sphaerospermum is a non-standardized extract, all allergenic extracts carry a class-wide warning regarding the risk of severe systemic reactions.
Summary of Warning: Allergenic extracts can cause severe life-threatening systemic reactions, including anaphylaxis. Patients with unstable asthma are at higher risk for severe reactions. This product must only be administered by physicians trained in the management of anaphylaxis. Patients must be observed for at least 30 minutes. Patients should be informed of the signs of a delayed reaction and should be prescribed an epinephrine auto-injector for self-use if a reaction occurs after leaving the clinic.
Report any unusual symptoms to your healthcare provider.
Cladosporium sphaerospermum extracts are powerful biological agents that directly manipulate the immune system. Every patient must be aware that while these extracts can provide long-term relief from allergy symptoms, they carry an inherent risk of triggering the very allergic symptoms they are meant to treat. Safety is maintained through strict adherence to dosing schedules and mandatory observation periods.
No FDA black box warnings for Cladosporium Sphaerospermum specifically, but it is subject to the general FDA warning for all allergenic extracts. This warning emphasizes that these products can cause anaphylaxis and should only be used in settings where emergency resuscitation equipment and trained personnel are immediately available.
Most patients can drive safely after their 30-minute observation period. However, if you feel lightheaded, dizzy, or extremely fatigued after your injection, you should not drive until these symptoms have completely resolved.
There is no direct chemical interaction between alcohol and Cladosporium sphaerospermum. However, alcohol can cause vasodilation (widening of blood vessels), which may theoretically increase the speed of allergen absorption or mask the early signs of an allergic reaction. It is generally advised to avoid heavy alcohol consumption on the day of your injection.
Unlike many medications, there is no 'withdrawal syndrome' associated with stopping Cladosporium sphaerospermum. However, if you stop the treatment prematurely, your allergy symptoms are likely to return. If you decide to stop, discuss a plan with your allergist to transition to other forms of symptom management.
> Important: Discuss all your medical conditions with your healthcare provider before starting Cladosporium Sphaerospermum.
There are no known direct interactions between specific foods and Cladosporium sphaerospermum. However, if you have known food allergies, you should avoid those foods on the day of your injection, as your immune system is already in a 'heightened' state of reactivity.
For each major interaction, the mechanism involves either a pharmacodynamic interference (blocking the receptors needed for emergency treatment) or a masking effect (hiding the early symptoms of a reaction). Management always involves a thorough review of the patient's medication list before the first dose is ever given.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking.
Conditions where Cladosporium sphaerospermum must NEVER be used include:
Conditions requiring a careful risk-benefit analysis by the physician:
Patients allergic to Cladosporium sphaerospermum may also show sensitivity to other molds in the Cladosporium genus (such as C. herbarum). There is also a known phenomenon of cross-reactivity between various fungal allergens due to shared proteins like 'enolase.' If you are allergic to one type of mold, your doctor will likely test for several others simultaneously.
> Important: Your healthcare provider will evaluate your complete medical history before prescribing Cladosporium Sphaerospermum.
FDA Pregnancy Category C. There are no adequate and well-controlled studies of Cladosporium sphaerospermum in pregnant women.
Allergenic extracts are not known to be excreted in human milk. Because they are proteins that are processed locally and in the lymphatics, it is highly unlikely that any significant amount would reach the infant. Immunotherapy is generally considered safe for breastfeeding mothers, but the mother should be monitored for reactions as usual.
Cladosporium sphaerospermum is used in the pediatric population, primarily for children aged 5 and older.
In patients over 65, the decision to use Cladosporium sphaerospermum must be balanced against the presence of co-morbidities.
There is no evidence that renal impairment affects the safety or efficacy of fungal allergenic extracts. The proteins are not cleared by the kidneys in their active form. No GFR-based adjustments are necessary.
Liver disease does not interfere with the immunological processing of allergenic extracts. No dosage adjustments based on Child-Pugh classification are required.
> Important: Special populations require individualized medical assessment.
Cladosporium sphaerospermum extract acts as an immunomodulator. The primary mechanism is the induction of peripheral T-cell tolerance. During the course of treatment, there is an increase in regulatory T-cells (Tregs) that produce IL-10 and TGF-beta. These cytokines suppress the Th2 response and the activation of eosinophils. Furthermore, the extract induces B-cells to switch production from IgE (the allergy antibody) to IgG4 (the blocking antibody). IgG4 prevents the allergen from cross-linking IgE on mast cells, thereby inhibiting the 'degranulation' process that releases histamine.
| Parameter | Value |
|---|---|
| Bioavailability | N/A (Subcutaneous/Local) |
| Protein Binding | N/A (Immunological processing) |
| Half-life | Proteins: Hours; Immune Effect: Months/Years |
| Tmax | 15-30 minutes (for local immune interaction) |
| Metabolism | Proteolytic degradation in lymph nodes |
| Excretion | Not traditionally excreted; degraded into amino acids |
Cladosporium sphaerospermum is classified as a Non-Standardized Fungal Allergenic Extract. It belongs to the broader therapeutic category of Allergen Immunotherapy. Related substances include extracts for Alternaria alternata, Aspergillus fumigatus, and various pollen or dust mite extracts.
Common questions about Cladosporium Sphaerospermum
Cladosporium sphaerospermum is primarily used as an allergenic extract for the diagnosis and treatment of mold allergies. In a diagnostic setting, it is applied to the skin during 'prick tests' to see if a patient develops a localized allergic reaction, confirming a sensitivity to this specific fungus. For treatment, it is used in allergen immunotherapy, commonly known as allergy shots. This involves injecting small, increasing amounts of the mold extract over several years to desensitize the immune system. The goal is to reduce symptoms like sneezing, wheezing, and itchy eyes caused by environmental mold exposure.
The most frequent side effects are localized to the site of the injection. Patients often experience redness, itching, and a raised bump or swelling at the spot where the shot was given. These symptoms usually appear within minutes and fade within a day. Some people may also experience a 'delayed' local reaction where the swelling appears several hours later. While these are common and usually harmless, they should always be reported to your allergist before your next dose.
While there is no direct chemical interaction between alcohol and the fungal extract, healthcare providers generally recommend avoiding alcohol on the day of your injection. Alcohol can cause your blood vessels to dilate, which might theoretically speed up the absorption of the allergen into your bloodstream, increasing the risk of a systemic reaction. Additionally, being under the influence of alcohol can make it difficult for you to notice or accurately describe early symptoms of an allergic reaction. It is best to remain clear-headed and hydrated during your treatment days.
The safety of Cladosporium sphaerospermum during pregnancy is a matter of careful clinical judgment. Doctors generally advise against starting a new course of allergy shots while pregnant because the risk of a severe allergic reaction (anaphylaxis) could harm the developing baby by reducing oxygen levels. However, if a woman is already on a stable maintenance dose and is tolerating it well, most allergists believe it is safe to continue the treatment. You must inform your allergist immediately if you become pregnant so they can adjust your treatment plan.
Allergy immunotherapy is a long-term commitment and does not provide immediate relief. Most patients begin to see a noticeable improvement in their symptoms during the 'maintenance phase,' which usually occurs 6 to 12 months after starting the injections. Significant benefits are typically realized after the first year of consistent treatment. For the best long-term results, the treatment is usually continued for three to five years to ensure the immune system remains desensitized even after the shots are stopped.
Yes, you can stop taking the injections suddenly without experiencing physical withdrawal symptoms like you might with certain other medications. However, stopping the treatment before the recommended 3-to-5-year course is finished often means your allergy symptoms will eventually return. If you miss several doses due to illness or travel, you cannot simply resume at your previous dose; your doctor will need to lower the dose to ensure your safety. Always discuss your reasons for wanting to stop with your allergist first.
If you miss a scheduled injection, you should contact your allergist's office as soon as possible to reschedule. Do not attempt to make up for the missed dose by taking a higher dose later. Depending on how many weeks have passed since your last shot, your doctor may need to repeat your last dose or even reduce the dose slightly to prevent a reaction. Consistency is key to the success of immunotherapy, so try to stick to your schedule as closely as possible.
There is no clinical evidence to suggest that Cladosporium sphaerospermum allergenic extracts cause weight gain. Unlike systemic corticosteroids (like prednisone) which are sometimes used to treat severe allergies and are known for causing weight changes, fungal extracts work locally on the immune system and do not affect your metabolism or appetite. If you experience unexpected weight gain during your treatment, it is likely due to other factors and should be discussed with your primary care physician.
Cladosporium sphaerospermum can be taken alongside most common medications, but there are critical exceptions. You must tell your doctor if you are taking beta-blockers, ACE inhibitors, or MAO inhibitors, as these can make allergic reactions more dangerous or harder to treat. Additionally, you should stop taking antihistamines several days before any skin testing, as they can cause a false negative result. Most other routine medications for blood pressure, cholesterol, or diabetes do not interact with allergy shots.
The concept of 'generic' vs. 'brand name' is slightly different for allergenic extracts. Because these are non-standardized biological products, they are produced by several different specialized laboratories (such as ALK, Greer, or HollisterStier). While the extracts of Cladosporium sphaerospermum from different manufacturers are similar, they are not considered identical 'generics' in the way a 10mg tablet of lisinopril is. Your allergist will usually stick with one manufacturer's extract for the duration of your treatment to ensure consistent potency.