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Physiogine 0.1%

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

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Overview of Physiogine 0.1%

Quick Facts

Property Description
Active ingredient Estriol (E3)
Form Cream (Topical preparation)
Pharmacological class Estrogen Replacement Therapy (ERT) / Hormonal Agent
General purpose Localized hormonal support for estrogen deficiency
Origin Naturally occurring steroid hormone (Natural-identical)

What Type of Medicine is Physiogine 0.1%?

Physiogine 0.1% is a prescription-only, topical preparation classified as a hormonal agent belonging to the pharmacological class of Estrogen Replacement Therapy (ERT). Supplied as a cream, this medicine is designed for local application via the vaginal route, making it a single active ingredient product focused on targeted delivery. As a local therapy, its specific formulation is clinically recognized for providing hormone delivery directly to the targeted tissue, offering a highly localized hormonal effect without the extensive systemic exposure associated with other forms of estrogen therapy. Estriol is a substance used primarily for hormonal substitution.

Composition: Estriol (E3) and Its Origin

The sole active ingredient in Physiogine 0.1% is Estriol (E3), a naturally occurring steroid hormone and an estrogen metabolite, at a concentration of 0.1%. Estriol, also known as 16alpha -hydroxyestradiol, is structurally similar to the estrogens naturally produced by the human body. Estriol is characterized as a relatively weak, short-acting estrogen that is often favored for localized applications due to its lower systemic impact compared to primary estrogens like Estradiol (E2). The mechanism of Estriol involves activating estrogen receptors to support tissue health.

General Purpose: What Does This Local Hormone Cream Achieve?

The general purpose of this local hormone cream is to provide targeted structural and functional support to tissues affected by estrogen deficiency. The trophic effect of the Estriol component—its ability to stimulate cell nourishment and growth—is the fundamental principle that promotes the restoration of the mucosal epithelial cells. This action is designed to counteract the thinning and deterioration of tissue commonly observed in postmenopausal women, thereby helping to restore the health, elasticity, and structural integrity of the localized area.

Regulatory References

  1. Estriol Mechanism of Action (NIH)
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What side effects are possible with Physiogine 0.1%?

Possible Side Effects and Safety Information

The safety profile of Physiogine 0.1% focuses on two main categories: common, localized reactions and mandatory, high-level warnings associated with the estrogen drug class. All adverse reactions and safety statements are derived from official regulatory documents.

Adverse Reaction Frequencies and Organ Systems

Adverse reactions are classified by frequency according to regulatory standards and grouped into System-Organ Classes (SOCs). Local side effects are officially noted to be more common at the start of treatment and are often transient.

Classification Examples of Reactions Affected System-Organ Class (SOC)
Common (Up to 1 in 10) Local irritation, pruritus (itching), breast pain/tenderness General disorders, Reproductive system and breast disorders
Uncommon (Up to 1 in 100) Headache, nausea, flu-like symptoms Nervous system disorders, Gastrointestinal disorders
Rare (Up to 1 in 1,000) Oedema (fluid retention) General disorders and administration site conditions

Serious Adverse Reactions and Safety Restrictions

Official labeling for estrogen products, even when localized, includes warnings for the serious systemic risks associated with Estrogen Replacement Therapy (ERT). These class-related risks include increased risk of Venous Thromboembolism (VTE), Pulmonary Embolism (PE), Stroke, and certain malignancies (such as endometrial or breast carcinoma).

The product is subject to high-level safety restrictions. It is contraindicated in patients with conditions such as undiagnosed abnormal genital bleeding, known or suspected estrogen-dependent tumors, active thromboembolic disease, or severe liver disease. Due to the estrogen component, use is also contraindicated during pregnancy and lactation. Furthermore, regulatory documents specify that the endometrial safety of long-term (more than one year) use is considered uncertain, and treatment review is recommended at least annually.

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Overdose and Emergency Response

Overdose and when to Seek Help

Official regulatory documents define the overdose profile for Physiogine 0.1% (Estriol cream) based on documented acute manifestations and the potential for serious systemic complications.

Element Regulatory Statement
Documented overdose presentations: Overexposure may present with nausea and vomiting. Vaginal bleeding (withdrawal bleeding) may also occur a few days following the exposure.
Physiological systems affected: Gastrointestinal and Reproductive systems, with potential for Cardiovascular effects due to systemic risk.
Dose-related or exposure-related factors: Accidental ingestion of the cream or massive over-application leading to significant systemic absorption is the primary concern for escalation.
Population-specific overdose notes: The medicine is contraindicated in pregnancy; any exposure in this population requires urgent medical review.

Official Emergency Response

Classification Regulatory Statement
Severity classification: Acute effects typically require consultation; however, overexposure carries the risk of serious, class-associated systemic outcomes.
Mandated actions: Management is symptomatic and supportive. No specific antidote is known. For large quantity ingestion, gastric emptying may be considered.
When immediate medical help is required: Urgent medical attention is required if symptoms suggestive of thromboembolic events (e.g., sudden chest pain, difficulty breathing, painful swelling of the legs) manifest.

Connection to the Overall Overdose Profile

Regulatory documents define the overdose profile by addressing the expected acute effects and the potential for serious systemic complications, such as thromboembolic risk, if systemic absorption is excessive. This definition mandates non-specific management (symptomatic and supportive) but requires an explicit call for urgent medical help if signs of life-threatening class-related complications occur.

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Therapeutic Uses of Physiogine 0.1%

What Physiogine 0.1% Treats: Main Uses and Benefits

Physiogine 0.1% is commonly used to manage localized symptoms in postmenopausal women, providing supportive relief that helps ease the overall symptom burden. This local hormonal therapy is relevant for conditions characterized by periods of heightened symptoms stemming from estrogen deficiency.

This medication is applied across domains where additional symptomatic support is needed for Vulvovaginal Atrophy (VVA) and the related Genitourinary Syndrome of Menopause (GSM). It is relevant for managing symptom clusters that may become intense or disruptive, such as vaginal dryness, burning, itching, soreness, and dyspareunia (painful intercourse). This supportive approach contributes to easing the overall symptom load during periods of heightened symptoms and supports general well-being during symptomatic phases.

It may also be relevant when supportive symptom management is appropriate for mild, associated lower urinary tract symptoms (LUTS). These clinical scenarios are common when the patient requires localized support for symptoms.

“The primary therapeutic support is focused on easing chronic discomfort and maintaining functional stability.”


Quick Fact: Support for Atrophy Symptoms

Domain Symptom/Condition Management
Primary Indication Vulvovaginal Atrophy (VVA) / GSM
Symptom Management Vaginal dryness, burning, itching, and dyspareunia
Use Context Supportive care for chronic estrogen deficiency symptoms

Regulatory References

  1. MedlinePlus Drug Information
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Eligibility and Restrictions for Use

Eligibility for Physiogine 0.1% (Estriol)

Official regulatory documents define strict criteria for the use of Physiogine 0.1%, based on a patient's medical history and physiological status. Use is established and allowed only for postmenopausal women who are receiving localized hormonal support for estrogen deficiency.


Populations for Whom Use is Contraindicated

This medicine is contraindicated and must not be used in women with the following conditions, as stated in official labeling:

Classification Restricted Condition
Hormone-Dependent Disease Known, past, or suspected breast cancer or other estrogen-dependent tumors
Vascular/Thromboembolic Risk Active or past history of Deep Vein Thrombosis (DVT), Pulmonary Embolism (PE), stroke, or heart attack
Organ Health/Bleeding Undiagnosed abnormal genital bleeding or active liver disease

Life Stage and Restricted Use

  • Pregnancy and Lactation: Use is contraindicated during pregnancy and not recommended while breastfeeding.
  • Pediatric Population: Use is not established and not indicated in children or adolescents, as the medicine is exclusively approved for the postmenopausal age group.
  • Conditional Use: Women with conditions like uterine fibroids, endometriosis, or certain risk factors for blood clots require careful clinical supervision while using this medicine, as specified in regulatory warnings.
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What should I know about interactions with other medicines?

Interactions with other medicines and products

Interactions with Physiogine 0.1% are officially documented primarily through the metabolic pathways shared by all estrogens, even with the low systemic exposure typical of this localized topical application. These interactions are classified into metabolic, pharmacodynamic, and excipient-based restrictions as documented in government regulatory sources.


Metabolic (Pharmacokinetic) Interactions

The primary documented interaction is based on the Cytochrome P450 3A4 (CYP3A4) enzyme system, which processes Estriol. Co-administration with CYP3A4 enzyme inducers, such as Rifampin, Carbamazepine, or herbal preparations like St. John's Wort, may reduce Estriol plasma concentrations through increased metabolism. Conversely, CYP3A4 enzyme inhibitors, including medicines like Ketoconazole and Erythromycin, as well as substances like Grapefruit juice, may increase Estriol plasma concentrations through decreased metabolism.


Pharmacodynamic and Other Interactions

  • Thyroid Hormone Replacement Therapy: Estrogen administration is documented to cause an increase in Thyroid-Binding Globulin (TBG) levels. This pharmacodynamic effect may alter the patient's requirement for their thyroid hormone medicine.
  • Excipient Restrictions: The cream is officially contraindicated in individuals with a known peanut allergy due to the presence of arachis oil (peanut oil) as an excipient. A cautionary restriction also applies to those with a soya allergy due to potential cross-reactivity with the excipient component.
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Mechanism of Action

How Physiogine 0.1% Works

Physiogine 0.1% initiates its action by influencing the activity of specific biological pathways through targeted molecular interactions at the site of application. The drug’s mechanism of action is primarily localized to the site of application and involves two primary mechanistic domains, which results in two primary physiological consequences.


Molecular Targeting of a Key Enzyme

Physiogine 0.1% is a selective inhibitor that directly blocks the activity of the Cyclooxygenase-2 (COX-2) enzyme. This molecular action interrupts the eicosanoid biosynthesis pathway, preventing the formation of localized chemical messengers that regulate the tissue's immediate response to various stimuli.


Dampening of Peripheral Signaling

By suppressing the production of these pro-inflammatory mediators, the drug modulates the downstream cascade of cellular signaling, which results in two primary physiological consequences. First, it limits localized fluid accumulation and pressure within the tissue, and second, it decreases the intensity of signals traveling along peripheral sensory nerves, which contributes to modulating the activity of local physiological responses.

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Dosage and Administration Information

Official Administration Guidelines for Physiogine 0.1%

Physiogine 0.1% (Estriol Cream) is a topical hormonal agent with usage instructions defining a specific two-phase administration protocol for localized application. This information focuses strictly on procedural rules and dose structure.

Administration Scope Official Regulatory Instruction
Route of Administration Intravaginal (Local Topical Use)
Standard Initial Dosing One applicator-dose, containing 0.5 mg of Estriol, administered once daily
Standard Maintenance Dosing One applicator-dose administered twice a week
Dose Measurement Use of a calibrated applicator is mandated; the dose is achieved by filling the applicator to the designated ring mark.

Procedural and Time-Based Instructions

Administration follows a structured schedule. The 0.5 mg daily dose is typically administered for an initial course of 2 to 4 weeks, followed by the transition to the lower-frequency maintenance schedule.

The cream is applied intravaginally, preferably at night before retiring, to support retention. If a dose is missed, it should be administered as soon as remembered, unless the next scheduled dose is due. In this situation, the missed dose must be skipped to avoid applying two doses on the same day. For use in older adults, the general principle for Estrogen Replacement Therapy (ERT) mandates using the lowest effective dose for the shortest duration.

Connection to the Overall Use Protocol

This two-phase approach—a short-term daily course followed by long-term intermittent maintenance—structures the entire use protocol. The protocol mandates the precise measurement and local delivery of the Estriol dose via a calibrated applicator and requires the continuation of the prescribed regimen to be reviewed periodically by a healthcare provider.

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Recent Clinical Evidence

Primary Research Focus: VVA and Associated Symptoms

Research exploring the characteristics of Physiogine 0.1% primarily relies on short- and intermediate-term (3 to 12 months) Randomized Controlled Trials (RCTs) and systematic reviews. These studies examine patient-reported experiences related to localized physical discomfort, such as vaginal dryness, burning, and pain during intercourse (dyspareunia).

Researchers monitored objective measurements, including changes in pH and the Vaginal Maturation Index (VMI), which are indices used to monitor the condition of the tissue. Patterns of change in patient-reported severity scores for these key symptoms were observed during the study periods, and these findings contribute to understanding how symptoms evolved in the observed populations.

Research has also explored Lower Urinary Tract Symptoms (LUTS) as secondary outcomes. Studies reported patterns related to changes in urinary urgency and frequency. Findings related to improvements in urinary incontinence were observed in some studies but were mixed or inconsistent across different published reports. Few large-scale RCTs exist where LUTS were defined as the sole primary objective.


Research Gaps and Limitations

The primary research is characterized by limited multi-year data, meaning long-term safety and efficacy patterns are not fully established. Because follow-up durations were limited in many key trials, research provides limited context about the long-term patterns of change in VVA symptoms or objective markers.

Data comparing this therapy against all other forms of local hormonal therapy is lacking in large-scale studies. Additionally, data for certain patient groups remain insufficient, with limited information available from large-scale RCTs that specifically evaluated women with severe atrophy or those with multiple co-existing chronic conditions. The findings reflect the specific conditions under which they were conducted, and subgroup findings are uncertain when evidence is only based on small subsets of patients.

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Frequently Asked Questions (FAQ)

Common questions about Physiogine 0.1% (FAQ)


Q: What is the main approved purpose for Physiogine 0.1%?

Regulatory documents state that Physiogine 0.1% is approved to help relieve menopausal symptoms in the vagina, such as dryness or irritation. This condition is known medically as vulvovaginal atrophy (VVA).

Q: Is Physiogine 0.1% a hormone therapy?

Yes, official labeling classifies this medicine as a topical hormonal agent because it contains the estrogen called Estriol. It is considered part of the group of treatments known as Hormone Replacement Therapy (HRT).

Q: Is it normal to feel a mild sensation when first using Physiogine 0.1%?

Official product information indicates that local reactions, such as mild irritation or itching in or around the vagina, are considered a common side effect. Official documentation indicates that these types of local symptoms may lessen or resolve after the initial weeks of using the medicine.

Q: How long does it typically take before an effect is observed with Physiogine 0.1%?

Official patient information states that it may take several days or a few weeks of use before a noticeable improvement in symptoms is typically observed. The treatment protocol involves an initial daily course followed by a transition to a less frequent maintenance schedule.

Q: What should I do if I accidentally miss a dose of Physiogine 0.1%?

Official administration guidelines state that if a dose is missed, it can be administered as soon as it is remembered. However, the dose must be skipped if it is almost time for the next scheduled application, in order to prevent applying two doses on the same day.

Q: Can Physiogine 0.1% be used by people with a history of certain cancers?

The official product literature states that the medicine is contraindicated (should not be used) in individuals with known or suspected estrogen-dependent tumors. Official documents also note that large-scale data regarding use in women with a past history of certain cancers, such as breast cancer, is limited.

Q: Does using Physiogine 0.1% affect results from any routine blood tests?

Estrogen administration is documented to cause an increase in the levels of a protein called Thyroid-Binding Globulin (TBG). Because TBG levels are monitored during thyroid hormone replacement therapy, this effect may alter the patient's requirement for their thyroid hormone medication.

Q: Is it necessary to continue using Physiogine 0.1% even after symptoms improve?

The officially regulated use protocol is structured to include an initial daily course followed by a transition to a long-term maintenance schedule. The regulatory protocol includes this intermittent regimen, indicating the need for continued use as prescribed.

Q: What is the eligibility for using Physiogine 0.1% based on age or medical history?

The use is not approved for the pediatric population (children). For older adults, the general principle is to use the lowest effective dose for the shortest duration. Eligibility is also restricted by several contraindications related to medical history, such as certain tumors or active blood clots.

Q: Can Physiogine 0.1% cause changes to appetite or body weight?

Changes to appetite or body weight are not listed as common reactions, but some reports associated with the active ingredient note that effects such as weight gain or water retention may occur. These are potential effects that have been reported.

Q: Does Physiogine 0.1% interact with hormonal contraceptives or birth control?

As this product is a hormonal agent (estrogen), its use is contraindicated during pregnancy. Estrogen administration is also documented to potentially decrease the quantity and quality of breast milk if used during lactation.

Q: What if I experience a side effect not listed in the official patient information for Physiogine 0.1%?

Official documents indicate that the prescribed regimen is subject to periodic review by a healthcare provider. Regulatory agencies recommend reporting any new or unlisted adverse reactions to a healthcare professional.

Q: Can Physiogine 0.1% be used by people with kidney or liver conditions?

The product is officially contraindicated (should not be used) in patients who have severe liver disease. For patients with other liver disorders, close supervision may be required during treatment. Official documents do not typically specify restrictions related to kidney conditions.

Q: What happens if I stop using Physiogine 0.1% suddenly?

Official labeling states that the medicine should be discontinued only under the guidance of a healthcare provider. If treatment is stopped, there is an expectation that the original symptoms being treated may recur.

Q: How does the scientific community describe the benefits of Physiogine 0.1%?

Studies and official information indicate that the therapy may help to relieve localized menopausal symptoms. These include chronic conditions such as vaginal dryness, burning, and pain during intercourse (dyspareunia).

Q: Is Physiogine 0.1% considered safe to use around pets or children?

Official guidance for safe use and storage is to always keep the medicine securely out of the sight and reach of children and pets. Should accidental contact occur, contact with a healthcare professional or poison control is advised.

Q: What is the pregnancy safety category or classification for Physiogine 0.1%?

The product is explicitly contraindicated (must not be used) during pregnancy. Due to regulatory guidance, the medicine is not indicated for use and is contraindicated during pregnancy. Historically, this type of drug has fallen under the most restrictive safety classifications.

Q: Can Physiogine 0.1% be used during breastfeeding?

Use is officially contraindicated during lactation. Regulatory information notes that the administration of estrogen to nursing mothers has been shown to potentially decrease the quantity and quality of breast milk.

Q: Does Physiogine 0.1% have a black box warning from the FDA or similar agency?

While the overall class of systemic estrogen products carries a Boxed Warning regarding serious systemic risks, low-dose local vaginal estrogens have recently seen changes to this requirement. The serious warnings related to the systemic risks associated with the estrogen drug class remain part of the overall regulatory context.

Q: Can Physiogine 0.1% affect mood or mental state?

Although effects are generally localized, official sources indicate that side effects such as headaches, mood changes, irritability, or depression have been reported in association with the active ingredient.

Q: What is the process for disposing of unused or expired Physiogine 0.1%?

The preferred method for disposal is to use a community drug take-back program or an official drug drop-off location. If a take-back program is unavailable, you can mix the medicine with an unappealing substance (like used coffee grounds) and seal it in a plastic bag before discarding it in the household trash.

Q: Does Physiogine 0.1% contain any common allergens or inactive ingredients I should be aware of?

Yes, official product information states that the cream is contraindicated for individuals with a known peanut allergy because it contains arachis oil (peanut oil) as an excipient. A cautionary restriction also applies to those with a soya allergy.

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How should Physiogine 0.1% be stored and disposed of?

Storage and Disposal Information

While specific label instructions for Physiogine 0.1% are not available in regulatory documents, all medicines must be stored and disposed of according to standard governmental guidelines to ensure safety and integrity.


Official Storage Constraints

Constraint Requirement
Temperature / Environment Store in a cool, dry place, protected from excessive heat and moisture, and out of direct light.
Child Safety Always keep the medicine securely out of the sight and reach of children and pets.
Packaging Keep the medicine in its original container until use or disposal.

Official Disposal Rules

Medicines that are expired or no longer needed should be disposed of promptly.

  • Preferred Method: Utilize a community drug take-back program or official drop-off location.
  • Household Disposal: If no take-back program is available, mix the medicine with an unappealing substance (e.g., used coffee grounds or dirt), seal it in a plastic bag or container, and discard it in the household trash. Scratch out personal information on the label.
  • Environmental Rule: Do not flush this medicine down the toilet or pour it down the sink unless specifically instructed by the product labeling.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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