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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Non-Standardized Plant Allergenic Extract [EPC]
Selenicereus Grandiflorus Whole is a non-standardized plant allergenic extract used primarily in diagnostic allergy testing and immunotherapy. It belongs to the class of Non-Standardized Plant Allergenic Extracts [EPC].
Name
Selenicereus Grandiflorus Whole
Raw Name
SELENICEREUS GRANDIFLORUS WHOLE
Category
Non-Standardized Plant Allergenic Extract [EPC]
Drug Count
4
Variant Count
4
Last Verified
February 17, 2026
About Selenicereus Grandiflorus Whole
Selenicereus Grandiflorus Whole is a non-standardized plant allergenic extract used primarily in diagnostic allergy testing and immunotherapy. It belongs to the class of Non-Standardized Plant Allergenic Extracts [EPC].
Detailed information about Selenicereus Grandiflorus Whole
This page is for informational purposes only and does not replace medical advice. Consult a qualified healthcare professional before using any medication containing Selenicereus Grandiflorus Whole.
Selenicereus Grandiflorus Whole, commonly known in the botanical world as 'Night-blooming Cereus' or 'Queen of the Night,' is a cactus species native to the Antilles, Mexico, and Central America. In a clinical and pharmacological context, Selenicereus Grandiflorus Whole is classified as a Non-Standardized Plant Allergenic Extract [EPC]. This classification indicates that the extract is derived from the whole plant and is used primarily by allergists and immunologists to diagnose or treat hypersensitivity (allergic) reactions to this specific botanical source. Unlike 'standardized' extracts, which have a proven and measured potency against a reference standard, non-standardized extracts are prepared according to traditional methods where the potency is expressed in terms of weight-to-volume (w/v) or Protein Nitrogen Units (PNU).
Historically, Selenicereus Grandiflorus has been utilized in various traditional medicine systems, particularly in the 19th and early 20th centuries, for its purported effects on the cardiovascular system. However, under modern FDA regulatory frameworks, its primary recognized role is within the realm of allergenic extracts. The FDA regulates these substances under the Biologics Control Act, ensuring that the manufacturing process maintains consistency, even if the absolute biological potency varies between lots. It is essential to understand that Selenicereus Grandiflorus Whole belongs to a class of drugs called allergenic extracts, which are intended to induce an immunological response rather than a direct metabolic or physiological change in the way a traditional pharmaceutical (like a beta-blocker or antibiotic) would.
The mechanism of action for Selenicereus Grandiflorus Whole depends entirely on its clinical application: diagnostic testing or therapeutic immunotherapy. At the molecular level, the extract contains various proteins, glycoproteins, and polysaccharides that serve as antigens (substances that trigger an immune response). When used for diagnostic skin testing (percutaneous or intradermal), the extract is introduced into the skin. If the patient has pre-existing IgE (Immunoglobulin E) antibodies specific to Selenicereus Grandiflorus, these antibodies—which are bound to the surface of mast cells and basophils—will cross-link with the antigens in the extract. This cross-linking triggers the 'degranulation' of mast cells, releasing inflammatory mediators such as histamine, leukotrienes, and prostaglandins. This results in the classic 'wheal and flare' reaction (a raised bump and redness), which the clinician measures to determine the level of sensitivity.
When used for immunotherapy (allergy shots), the mechanism shifts toward 'desensitization.' By administering gradually increasing doses of the extract over a long period, the body’s immune system is 'retrained.' This process typically involves a shift from a Th2-dominated immune response (which produces IgE) to a Th1-dominated response, alongside the production of IgG4 (blocking antibodies) and the activation of regulatory T-cells. These regulatory mechanisms eventually prevent the massive release of histamine upon future exposures to the cactus or its pollen.
As a biological allergenic extract administered primarily through local routes (skin testing or subcutaneous injection), the traditional pharmacokinetic parameters (ADME) differ significantly from oral medications.
Selenicereus Grandiflorus Whole is indicated for two primary clinical purposes:
Off-label, some practitioners in alternative medicine continue to use preparations of Selenicereus (often under the name 'Cactus grandiflorus') for heart-related symptoms like palpitations or angina, but these uses are not supported by the current FDA-approved labeling for the 'Whole' allergenic extract and lack rigorous clinical trial validation in the modern era.
Selenicereus Grandiflorus Whole is typically available in the following forms:
> Important: Only your healthcare provider can determine if Selenicereus Grandiflorus Whole is right for your specific condition. Because it is a biological product capable of inducing severe allergic reactions, it must only be administered in a clinical setting equipped with emergency resuscitation equipment.
Dosage for Selenicereus Grandiflorus Whole is highly individualized and must be determined by an allergy specialist through a process of serial titration. There is no 'standard' dose that applies to all patients.
While allergenic extracts can be used in children, extreme caution is required. Pediatric dosing follows the same principle of titration based on skin-test reactivity.
No specific dosage adjustments are required for patients with renal impairment, as the extract is not cleared primarily by the kidneys in its active form. However, the patient's overall health must be stable to manage potential systemic reactions.
No dosage adjustments are defined for hepatic impairment. The metabolic breakdown of proteins (proteolysis) occurs systemically and is not solely dependent on liver function.
Elderly patients (over 65) require careful evaluation. The primary concern is the presence of underlying cardiovascular disease, which may make the use of epinephrine (the treatment for a severe reaction) more dangerous. Dosing may be kept at a more conservative maintenance level.
Selenicereus Grandiflorus Whole is never for self-administration at home. It must be administered by a healthcare professional in a clinic or hospital.
If a dose of immunotherapy is missed, the next dose may need to be reduced depending on how much time has passed:
An 'overdose' in the context of allergenic extracts usually refers to an injection of a concentration higher than the patient's current tolerance level.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose or skip appointments without medical guidance, as this increases the risk of a severe reaction.
The most frequent side effects associated with Selenicereus Grandiflorus Whole are localized to the site of administration. These are generally considered 'expected' reactions in the context of allergy testing and treatment.
These reactions are slightly more significant and may require a temporary adjustment of the dosage schedule.
> Warning: Stop taking Selenicereus Grandiflorus Whole and call your doctor immediately if you experience any of these symptoms of a systemic allergic reaction (anaphylaxis).
There are no known 'toxic' long-term effects of Selenicereus Grandiflorus Whole in the sense that it does not damage organs like the liver or kidneys over time. However, the primary long-term risk is increased sensitization. In rare cases, receiving extracts can make a person more allergic to the substance than they were before, though the goal of therapy is the opposite.
While not all non-standardized extracts carry a formal 'Black Box' on every single label, the FDA requires a general class warning for all allergenic extracts regarding the risk of Anaphylaxis.
Summary of Warning: Selenicereus Grandiflorus Whole can cause severe, life-threatening systemic allergic reactions, including anaphylaxis. Patients with unstable asthma are at a higher risk for fatal outcomes. This product must only be administered by clinicians trained in the management of anaphylaxis. Patients must be observed for at least 30 minutes following administration. Epinephrine must be immediately available.
Report any unusual symptoms to your healthcare provider, even if they seem minor at first. Early intervention is key to preventing a serious reaction.
Selenicereus Grandiflorus Whole is a potent biological agent. Its use is restricted to diagnostic and therapeutic protocols managed by specialists. Patients must be aware that every injection carries a small but real risk of a systemic reaction. It is vital to report any changes in your health, such as a new cold, asthma flare-up, or new medications, before receiving your injection.
No specific FDA black box warning exists uniquely for Selenicereus Grandiflorus Whole, but it falls under the mandatory class warning for all allergenic extracts. This warning emphasizes that the product can cause severe anaphylaxis and should only be used in settings where emergency medical care is available. Fatalities have occurred with allergenic extracts when these precautions were not followed.
Generally, Selenicereus Grandiflorus Whole does not cause drowsiness. However, if a patient experiences a systemic reaction or receives epinephrine, they should not drive or operate machinery until they have been fully cleared by a medical professional and have recovered for several hours.
Alcohol should be avoided for several hours before and after an injection. Alcohol causes vasodilation (widening of the blood vessels), which can potentially increase the rate of allergen absorption and increase the risk of a systemic reaction.
If a patient experiences a severe systemic reaction, the healthcare provider may decide to discontinue the therapy permanently or significantly reduce the dose. There is no 'withdrawal syndrome' associated with stopping allergenic extracts, but the patient's allergy symptoms will likely return to their baseline levels over time.
> Important: Discuss all your medical conditions, especially respiratory or heart problems, with your healthcare provider before starting Selenicereus Grandiflorus Whole.
There are few absolute contraindications for drug combinations, but the following are considered highly dangerous:
For each major interaction, the management strategy usually involves either discontinuing the interfering medication (like antihistamines before a test) or conducting a rigorous risk-benefit analysis (like with beta-blockers).
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, including over-the-counter allergy meds.
Selenicereus Grandiflorus Whole must NEVER be used in the following circumstances:
Conditions requiring careful risk-benefit analysis include:
Patients who are allergic to other members of the Cactaceae family may show cross-reactivity to Selenicereus Grandiflorus Whole. This includes other ornamental cacti or prickly pear (Opuntia). A thorough history of botanical exposures is necessary before testing.
> Important: Your healthcare provider will evaluate your complete medical history, including your lung function and heart health, before prescribing Selenicereus Grandiflorus Whole.
Selenicereus Grandiflorus Whole is generally classified as FDA Pregnancy Category C. This means that animal reproduction studies have not been conducted, and it is not known whether the extract can cause fetal harm.
It is not known if the allergenic components of Selenicereus Grandiflorus Whole are excreted in human milk. Because these are large proteins that are likely broken down in the mother's system, the risk to the nursing infant is considered extremely low. Breastfeeding is generally not a contraindication for continuing immunotherapy.
As the extract consists of biological proteins that undergo proteolysis, renal impairment does not significantly alter the clearance of the drug. No specific dose adjustments are required, though the patient's overall stability must be confirmed.
There is no evidence that hepatic impairment affects the safety or efficacy of Selenicereus Grandiflorus Whole. The liver is not the primary site of action or metabolism for these injected proteins.
> Important: Special populations require individualized medical assessment and often a more conservative approach to dose escalation.
Selenicereus Grandiflorus Whole acts as an exogenous antigen. In diagnostic use, it facilitates the Type I Hypersensitivity reaction. The molecular components (antigens) bind to IgE antibodies on the surface of mast cells. This causes the activation of the signal transduction pathway involving tyrosine kinases (such as Syk), leading to an influx of calcium ions and the subsequent release of pre-formed mediators like histamine from intracellular granules.
In therapeutic use, it induces immunological tolerance. This is achieved by increasing the production of IL-10 and TGF-beta by regulatory T-cells, which suppresses the allergic Th2 response and promotes the production of IgG4. IgG4 acts as a 'blocking antibody,' intercepting the allergen before it can bind to IgE on mast cells.
| Parameter | Value |
|---|---|
| Bioavailability | N/A (Subcutaneous/Local) |
| Protein Binding | Primarily interacts with IgE/IgG |
| Half-life | Proteins degraded within hours; immune effect lasts months |
| Tmax | 15-30 minutes (for local skin reaction) |
| Metabolism | Proteolysis (Protease enzymes) |
| Excretion | Renal (as peptide fragments/amino acids) |
Selenicereus Grandiflorus Whole is a Non-Standardized Plant Allergenic Extract. It belongs to the broader therapeutic category of 'Biologicals' and the sub-category of 'Immunotherapy Agents.' It is related to other plant extracts like Ragweed or Grass pollen extracts, though its specific botanical source is unique.
Common questions about Selenicereus Grandiflorus Whole
Selenicereus Grandiflorus Whole is primarily used as an allergenic extract for the diagnosis and treatment of specific allergies. In a clinical setting, an allergist uses a diluted form of the extract to perform skin tests, which help determine if a patient is hypersensitive to this particular cactus species. If an allergy is confirmed and exposure is unavoidable, the extract can also be used in 'allergy shots' (immunotherapy). This process involves giving the patient gradually increasing doses to desensitize their immune system over time. It is not used for general medical conditions in standard pharmaceutical practice.
The most common side effects are localized reactions at the site where the extract was injected or applied. These include redness, itching, and a raised bump known as a 'wheal,' which typically appears within 20 minutes of a skin test. Some patients receiving immunotherapy injections may also experience localized swelling or soreness that lasts for a day or two. While these local reactions are common, they are usually mild and do not require extensive treatment. However, any local reaction that is very large (larger than the palm of your hand) should be reported to your doctor immediately.
It is strongly recommended that you avoid alcohol for several hours both before and after receiving an injection of Selenicereus Grandiflorus Whole. Alcohol can cause your blood vessels to dilate, which may speed up the absorption of the allergen into your bloodstream, potentially increasing the risk of a systemic or 'whole-body' allergic reaction. Furthermore, alcohol can mask the early symptoms of a reaction, such as feeling lightheaded or flushed, making it harder for you or your doctor to recognize an emergency. Always follow the specific lifestyle restrictions provided by your allergy clinic.
The safety of starting Selenicereus Grandiflorus Whole during pregnancy has not been fully established, and it is generally classified as FDA Category C. Most healthcare providers will not begin a new course of allergy shots for a pregnant patient because of the risk that a severe allergic reaction (anaphylaxis) could reduce oxygen flow to the baby. However, if a woman is already on a stable maintenance dose and is tolerating it well before becoming pregnant, many doctors will choose to continue the treatment. You must have a detailed discussion with your allergist and obstetrician to weigh the risks and benefits in your specific case.
For diagnostic purposes, the extract works almost immediately, producing a skin reaction within 15 to 20 minutes. For therapeutic immunotherapy, however, the process is much slower and requires patience. Most patients do not begin to feel a reduction in their allergy symptoms until they reach their 'maintenance dose,' which typically takes 3 to 6 months of weekly injections. Significant and long-lasting immune changes usually require a commitment to treatment for 3 to 5 years. It is not a 'quick fix' for acute allergy symptoms.
Yes, you can stop taking Selenicereus Grandiflorus Whole injections suddenly without experiencing physical withdrawal symptoms like those seen with some other medications. However, stopping the treatment before the recommended course is finished (usually 3-5 years) means that your allergy symptoms are likely to return. If you miss several doses and then try to resume, you cannot simply take your last dose; your doctor will need to lower the dose and slowly build it back up to ensure your safety. Always consult your allergist before deciding to discontinue your immunotherapy.
If you miss a dose of your immunotherapy, you should contact your allergy clinic as soon as possible to reschedule. Do not attempt to 'double up' on your next dose or take an extra dose at home. The safety of these injections depends on a very specific timing and dosage schedule. Depending on how many days or weeks have passed since your last injection, your doctor may need to repeat your previous dose or even reduce the dose slightly to prevent an adverse reaction. Consistency is key to both the safety and the effectiveness of the treatment.
There is no clinical evidence to suggest that Selenicereus Grandiflorus Whole causes weight gain. Unlike some other medications used for allergies, such as oral corticosteroids (like prednisone), allergenic extracts are biological proteins that do not affect your metabolism, appetite, or fat distribution. Because the extract is administered in very small amounts and works specifically on the immune system, it does not have the systemic metabolic side effects associated with weight changes. If you notice unexplained weight gain while on this treatment, you should discuss it with your primary care physician.
Selenicereus Grandiflorus Whole can be taken with many medications, but there are critical exceptions. You must inform your doctor if you are taking beta-blockers, MAO inhibitors, or tricyclic antidepressants, as these can make an allergic reaction much more dangerous or harder to treat. Additionally, common allergy medications like antihistamines must be stopped several days before skin testing, as they can block the reaction and lead to a false-negative result. Most other routine medications for blood pressure, cholesterol, or diabetes do not interact directly with allergenic extracts.
The concept of 'generic' vs. 'brand name' is slightly different for allergenic extracts than for standard pills. Selenicereus Grandiflorus Whole is a biological product produced by various specialized laboratories. While different companies may produce the extract, they are not considered 'generics' in the traditional sense because each manufacturer's process for creating the non-standardized extract may result in slight variations in the protein mix. Your allergist will typically stick with one manufacturer's product for the duration of your treatment to ensure the most consistent and predictable results.