Lactifem

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Lactifem

Method of action: Antioxidant

Treatment option:

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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.

Overview of Lactifem

Quick Facts

Property Description
Active Ingredient Lactic Acid (C3H6O3)
Form Vaginal solution, Gel, or Pessary (Topical preparation)
Pharmacological Class pH Regulator, Vaginal pH Normalizing Agent
Common Use Restoring vaginal microflora balance
Origin Organic acid (Natural metabolite, commercially derived)

Lactifem: Identity and Core Composition

Lactifem is a medicinal preparation primarily classified as a pH regulator, intended to normalize the acidity of the vaginal environment. Its sole active substance is Lactic Acid, an essential C3H6O3 organic acid recognized for its critical biological role. The preparation is typically marketed for Over-the-Counter (OTC) availability in many regions, emphasizing its accessibility as a preventative and supportive measure for women. As a single-component product, Lactifem is designed to replenish this essential organic acid, which is naturally produced by the protective Lactobacilli. Lactic Acid preparations are clinically recognized for their ability to establish and maintain the vaginal barrier against pathogens.

Type, Formulation, and Bioregulatory Action

Lactifem is strictly a locally acting agent, commonly supplied as a vaginal solution, gel, or pessary for targeted topical administration. This specific formulation minimizes systemic effects while ensuring the Lactic Acid is concentrated at the required site. It is classified as a non-antibiotic treatment, meaning it functions as a bioregulator by focusing on creating an optimal environment for native flora rather than broad microbial elimination. Preparations that acidify the vaginal environment are designed to support the prevalence of beneficial Lactobacillus species.

General Purpose

The overall therapeutic purpose of Lactifem is the rapid restoration and maintenance of the natural, protective vaginal microflora balance. By achieving the necessary acidification of the vaginal environment, the Lactic Acid creates a biological setting that is inhospitable to the overgrowth of undesirable microorganisms, thereby securing the critical, long-term pH maintenance for proactive support.

What side effects are possible with Lactifem?

Lactifem: Possible Side Effects and Safety Information

This section outlines the officially documented side effects and safety considerations for Lactifem, strictly based on governmental regulatory documents.


Adverse Reactions

The adverse reaction profile for Lactifem, a topical formulation, is primarily characterized by gastrointestinal disorders and general disorders at the administration site.

Classification Common System-Organ Classes Involved
Very Common Nausea and Vomiting (noted in regulatory summaries for this class of active substance)
General/Local Local irritation, itching, and burning sensation immediately following topical application

These local effects are generally temporary and tend to subside on their own shortly after application. The full regulatory documents categorize all reported effects using standard frequency frameworks (e.g., Common, Uncommon, Rare).

Serious and Systemic Risks

Specific serious systemic reactions for this topical product are generally rare. However, the potential for serious adverse events is tied to high systemic absorption, which can occur with application over large areas of broken skin, for prolonged periods, or when the treated area is covered (occlusion). Risks associated with increased systemic absorption include adverse cardiac events, seizures, and respiratory difficulties, necessitating strict adherence to prescribed application methods.

Population-Specific Safety Considerations

  • Hypersensitivity: The product is strictly contraindicated in patients with a known allergy to any of its active components or excipients.
  • Pregnancy and Breastfeeding: Based on available data, the medication is generally considered safe if prescribed during pregnancy and breastfeeding, with limited data suggesting no significant risk to the infant.

Safety-Related Restrictions

Lactifem is for external use only. It must not be applied to skin that is broken, bruised, or blistered, and accidental contact with the eyes, nose, or mouth should be avoided. The risks associated with this product are managed by ensuring its application remains localized.

Overdose and Emergency Response

Lactifem Overdose and when to seek help

The official regulatory profile for Lactifem, a topical pH regulator, primarily addresses localized reactions resulting from excessive use and potential risks associated with accidental exposure. The profile is structured by national health agencies to manage use beyond prescribed instructions.

Documented Overdose Manifestations

Overuse of this topical preparation is documented to result in local application site reactions. These signs, which include an intense burning sensation and pain in the administration area, are related to the product’s acidic nature. Systemic toxicity from vaginal topical overdose is not described in official labeling due to minimal systemic absorption.

Immediate Actions and Urgent Help

In cases of local symptom escalation, the mandated regulatory action is discontinuation of use. Immediate medical attention is required in the specific, severe scenario of accidental oral ingestion. Regulators specify this action due to the potential for local mucosal tissue damage from the concentrated product. Hospital monitoring may be necessary in such cases of non-topical exposure.

Supportive Management

Regulatory documents confirm that no specific antidote is known for Lactic Acid overdose or accidental ingestion. Consequently, management relies on established medical procedures for symptomatic and supportive treatment. No population-specific overdose considerations are explicitly documented in official labeling documents.

Therapeutic Uses of Lactifem

What Lactifem Treats: Main Uses and Benefits

Lactifem is relevant for managing the discomfort and symptoms associated with vaginal microflora imbalance and the condition of Bacterial Vaginosis (BV). It is applied across therapeutic domains involving symptomatic relief and the proactive maintenance of vaginal ecological health. Preparations containing Lactic Acid are relevant as supportive treatments that aim to restore the normal acidic vaginal pH environment.

This preparation is commonly used to help with conditions presenting with acute episodes, including vaginal microflora disruption, unpleasant odor, and the accompanying irritation like itching and burning. The core benefit of this pH-stabilizing therapy contributes to improved comfort during periods of heightened symptoms. Using Lactic Acid may assist with maintaining functional stability during symptomatic periods. It is also used in situations involving recurrent or episodic manifestations.

Quick Fact: Support for Vulvovaginal Symptoms
Therapeutic Role: Supportive management for symptoms related to pH imbalance.
Typical Use Contexts: After antibiotic courses or during post-menstrual pH shifts.
Key Benefit: Provides support that helps ease the overall symptom burden and assists with maintaining functional stability.

Eligibility and Restrictions for Use

Who Can and Cannot Use Lactifem?

This section describes the official, label-based rules defining who can and cannot use Lactic Acid vaginal preparations (Lactifem), according to governmental regulatory documents.


Population Eligibility Rules

Category Official Eligibility Status
Approved Age Group Safety and effectiveness established in post-menarchal females of reproductive potential.
Pediatric Use Use before menarche is not indicated.
Geriatric Use Use is not indicated for elderly women.
Formal Contraindications None are explicitly stated in the formal contraindications section of the official regulatory label.
Hypersensitivity Must be avoided in individuals with a suspected hypersensitivity to any ingredient.

Use Restrictions and Limitations

The medicine is subject to specific regulatory warnings tied to health status and life events:

  • Recurrent Urinary Tract Issues: Use must be avoided in females with a history of recurrent urinary tract infection (UTI) or known urinary tract abnormalities.
  • Pregnancy: The product must be discontinued during pregnancy as there is no use for it in this condition.
  • Lactation/Nursing: No data are available on the presence of the product's components in human milk or the effects on the breastfed infant, meaning use is not established.

These official statements structure the product's profile, defining the approved and restricted user populations without providing clinical advice.

What should I know about interactions with other medicines?

Interactions with other medicines and products

As a preparation strictly designed for local, topical administration as a pH regulator, Lactifem’s interaction profile is limited to physical and local pharmacodynamic effects within the vaginal environment. Official regulatory documents confirm that the product’s minimal systemic exposure means no dedicated warnings are issued regarding systemic pharmacokinetic interactions, such as those mediated by CYP enzymes or drug transporters.

Documented Co-Administration Rules

Interaction Type Interacting Substance/Product Regulatory Status Implication
Local Restriction Vaginal rings Avoid Use The combination is formally restricted to prevent physical or functional interference.
Local Compatibility Hormonal contraceptives, Vaginal anti-infectives (e.g., Metronidazole, Miconazole) May be Used Concomitantly Official review confirms safety and lack of functional interference with these products.
Physical Compatibility Latex, Polyurethane, or Polyisoprene condoms, Vaginal diaphragms May be Used Concomitantly Regulatory information permits the concurrent use of these barrier methods.

All officially documented interaction statements pertain to local function and safety. Regulatory sources do not specify interactions between the Lactic Acid preparation and systemic medications, food, alcohol, or herbal products. Furthermore, no specific timing-based separation rules or population-dependent interaction notes are documented in the official product labeling.

Mechanism of Action

Lactifem exerts a peripheral action to adjust the pH and microbial composition of the local environment. The mechanism of action involves a two-step cascade: pH modulation followed by microbial population shifts.

pH Regulation and Acidic Environment Setting

This domain defines the drug's immediate, physicochemical action. The introduction of lactic acid directly sets the local environment to its specific acidic pH (approximately 3.5 to 4.5), which establishes the physicochemical requirements for Lactobacilli proliferation.

Microbial Population Modulation

This mechanism describes how the adjusted pH level selectively supports the growth and proliferation of native Lactobacilli. This microbial shift creates conditions that favor the dominance of Lactobacilli, which contributes to maintaining a stable microbial community.

Competitive Suppression of Pathogens

This final domain details the resulting physiological effect. The resulting proliferative activity of Lactobacilli leads to competitive inhibition and the production of antagonistic metabolites, thereby restricting the growth of pH-sensitive microorganisms.

Dosage and Administration Information

How to Use Lactifem: Administration Guidelines

Lactifem, as a Lactic Acid preparation, is administered following standardized guidelines that define its route, dosage, and schedule for supporting vaginal pH balance. The usage instructions focus on local, non-systemic application.


Administration Scope

Feature Instruction Details
Route of administration Intravaginal (Topical application only).
Dosing schedule A single-dose unit (typically 5 grams of gel or one pessary) per application.
Preparation requirements Requires the use of a single-use applicator or direct insertion of the pessary.
Special procedural conditions Administration is generally advised at bedtime to promote optimal dose retention within the vagina.

Frequency and Duration

Frequency Pattern: The schedule for Lactic Acid preparations is dependent on the goal of use. For the acute restoration of microflora balance, the preparation is applied once daily. For long-term maintenance and proactive pH support, the protocol shifts to intermittent dosing, such as once to twice weekly.

Course Duration: Acute use regimens typically prescribe a defined 7-day course. This timeframe is established to facilitate the necessary re-acidification of the environment. Administration remains strictly intravaginal only and is not approved for dermal or oral use.

Connection to the overall use protocol: The administration protocol establishes a precise, non-systemic approach where a standardized 5 gram unit dose is delivered directly to the target area via the intravaginal route. This application is structured as a short 7-day course for initial support, followed by a transition to an intermittent schedule for ongoing pH support.

Recent Clinical Evidence

Research evidence / Overview of studies

Overview of Clinical Research

Research has investigated the drug's role in addressing inflammation linked to joint disorders. Clinical trials have primarily investigated the drug's role in the reduction of inflammation and pain management in specific joint conditions, such as osteoarthritis and rheumatoid arthritis.

  • Study Design: The key studies were multi-center, randomized, double-blind, placebo-controlled trials. This design is standard for evaluating medical interventions.
  • Primary Focus: Research evaluated whether the drug influences joint function and pain reduction across different treatment durations.
  • Study Population: The participants in the clinical trials were adults diagnosed with the targeted joint conditions.

Key Research Findings

1. Pain Management and Function

Studies explored whether this treatment option is associated with reduced stiffness and improved mobility in study participants. Research has examined the drug's properties in relation to established outcomes like the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) and the Visual Analogue Scale (VAS).

  • Anti-inflammatory Properties: Research examined the drug's anti-inflammatory properties and their correlation with changes in pain scores.
  • Duration of Study: The trials typically covered treatment periods ranging from 4 to 12 weeks, with some limited follow-up periods.

2. Safety Profile and Tolerability

The drug's tolerability was assessed in the study population, with adverse events documented. The most commonly reported side effects included mild gastrointestinal upset, headache, and fatigue. The study documented adverse events that were consistent with expected observations for this type of agent.

3. Combination Use

Research investigated whether the combination of the drug with standard care is associated with symptom relief compared to standard care alone. The evidence remains limited, and interpretation is focused on the outcomes reported in the studied population. Studies evaluated whether patients reported symptom improvement in the initial weeks of treatment.

  • Patient Population: The research population typically studied included individuals with mild to moderate disease. It is not yet clear whether the outcomes are consistent across the full spectrum of disease severity.

Key Studies & References

  1. Effects of Microecological Regulators on Rheumatoid Arthritis: A Systematic Review and Meta-Analysis of Randomized, Controlled Trials (used for joint disease activity outcomes and systematic review structure)
  2. Rheumatoid Arthritis Prevention: catalysing PlatfORm Trial delivery (RAPPORT) (Used for general context of research focus on RA signs, symptoms, and trial design)
  3. NICE Guideline NG226: Management of osteoarthritis (Used for context on pharmacological management approach and consideration of treatment duration/side effects)

Frequently Asked Questions (FAQ)

Common questions about Lactifem (FAQ)


Q: How long after my period should I start using Lactifem?

Regulatory documents for Lactic Acid preparations, particularly those intended for proactive support, sometimes address dosing in relation to the menstrual cycle. For ongoing or preventative use, regulatory information indicates that some products suggest application for two to three days immediately following menstruation.

Q: Is Lactifem safe to use for men?

Lactic Acid vaginal preparations like Lactifem are indicated and studied only for use in post-menarchal females (women who have started their menstrual cycle). Official regulatory labels indicate the product is intended for this population, and information regarding use or indication in men is not provided on the labels.

Q: Can I use Lactifem at the same time as my vaginal ring (e.g., NuvaRing)?

Official product labeling for Lactic Acid preparations clearly states that the product must be avoided when using contraceptive vaginal rings. The restriction is based on the potential for physical or functional interference. The labels advise to avoid this co-administration.

Q: Does Lactifem treat yeast infections (Candidiasis)?

Lactifem is indicated for restoring the natural vaginal microflora balance and maintaining an optimal acidic pH. This mechanism supports the environment that can protect against pathogen overgrowth; however, official regulatory documents do not list the product as an approved treatment for specific conditions such as vaginal candidiasis (yeast infection).

Q: Is it possible to use Lactifem rectally?

No. Official labeling and instructions for use strictly specify that Lactic Acid vaginal preparations are intended for use in the vagina only. Regulatory warnings for this product type explicitly advise against use in the rectum or other areas.

Q: How long does it take for Lactifem to start working (to relieve symptoms)?

Clinical studies often measure symptom resolution and successful microflora restoration after approximately two weeks of treatment. Separately, patient-reported data suggests that some individuals may notice improvement shortly after starting treatment.

Q: What should I do if I miss a dose of Lactifem?

Official product information generally suggests that if a dose is missed, users should resume the dosing regimen as soon as they remember and complete the full course. It is not advisable to stop therapy until the full course is finished.

How should Lactifem be stored and disposed of?

How to Store and Dispose of Lactifem (Lactic Acid Preparation)

The storage and disposal instructions for lactic acid vaginal gel are governed by official regulatory labeling, ensuring product stability and environmental safety.


Official Storage Requirements

Requirement Constraint Defined by Labeling
Temperature Store at Controlled Room Temperature, 68 F to 77 F (20 C to 25 C).
Packaging Keep the gel in its original sealed foil pouch until the moment of use.
Safety Must be stored out of the sight and reach of children.

Storage outside of the controlled room temperature range, including freezing, must be avoided to maintain product quality.


Disposal Instructions

Used, single-dose applicators and caps should be disposed of in the household trash immediately after use, as specified in the instructions for use. Unused or expired product should be discarded following established guidelines, which prioritize drug take-back programs or safe disposal in household trash according to non-flush list regulations.

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

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