Dalacin 2%

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Medically reviewed

Rosario Oropesa

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.

Overview of Dalacin 2%

What Type of Medicine is Dalacin 2% Cream?

Dalacin 2% Cream is a prescription-only semi-synthetic medication classified as a lincosamide antibiotic. Its primary function is to serve as a localized anti-infective agent. This specific formulation is intended for intravaginal use only, which facilitates the targeted delivery of the medication directly to the affected area.

The active substance, Clindamycin, is a semi-synthetic derivative of the naturally occurring compound Lincomycin. It is presented as a white, semi-solid vaginal cream at a 2% concentration (20 mg clindamycin per gram), which is the pharmaceutical form for this therapeutic application.

Active Ingredient and Form: Understanding Clindamycin Phosphate 2%

The single active component in this preparation is Clindamycin Phosphate. This molecule functions as an inactive prodrug. The formulation undergoes chemical breakdown, or hydrolysis, within the body to convert into the antibacterially active form, free Clindamycin.

How Does Clindamycin Work to Address Infection?

The therapeutic effect of the medicine is achieved through a specific biological action targeting bacterial machinery. The active Clindamycin molecule works by interfering with the bacteria’s protein synthesis, which is essential for bacterial growth and survival. This mechanism involves the drug binding to the 50S ribosomal subunit of susceptible bacteria, effectively disrupting the formation of necessary proteins. By inhibiting this process, the medication is predominantly bacteriostatic, meaning it stops the bacteria from multiplying and allows the body’s own immune system to manage and resolve the infection.

Regulatory References

  1. Clindamycin Vaginal: MedlinePlus Drug Information

What side effects are possible with Dalacin 2%?

The safety profile for Dalacin 2% Cream is established by official regulatory documentation, which categorizes adverse reactions primarily by frequency and affected body system.


Adverse Reactions and Frequencies

Classification Examples of Officially Documented Effects
Very Common Vulvovaginal candidiasis (yeast infection)
Common Headache, back pain, pelvic pain, diarrhea, nausea, vomiting, constipation, vulvovaginitis

Reactions are officially grouped by System-Organ Class, including Infections and Infestations, Gastrointestinal Disorders, and Reproductive System and Breast Disorders.


Serious Safety Considerations

All clindamycin formulations carry the risk of Pseudomembranous Colitis or Clostridioides difficile-Associated Diarrhea (CDAD), which is a serious adverse reaction linked to systemic antibiotic absorption. This potential risk is noted even with the localized vaginal administration. Severe, though rare, hypersensitivity reactions (including DRESS and SJS) are also documented in post-marketing reports. Symptoms of CDAD may appear during treatment or up to several weeks after cessation.

Safety Restrictions

The medicine is contraindicated in individuals with a known hypersensitivity to clindamycin or lincomycin, or those with a history of regional enteritis, ulcerative colitis, or antibiotic-associated colitis. Furthermore, the cream contains components that may weaken latex or rubber products, requiring caution. Specific safety notes exist for use during pregnancy and lactation, due to the potential for the drug to cross into breast milk or fetal circulation.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for Dalacin 2% Cream addresses the potential for systemic absorption following vaginal administration, which could produce systemic effects. The most serious outcome documented is the risk of Clostridioides difficile-associated diarrhea (CDAD), which can manifest as diarrhea or bloody diarrhea and may range in severity up to fatal colitis.

Immediate Actions and Emergency Response

Immediate contact with a healthcare professional, hospital emergency department, or regional Poison Control Centre is required if accidental ingestion or overuse is suspected, even if the patient is asymptomatic. The diagnosis of colitis must be considered in any patient who develops diarrhea subsequent to administration.

Official Management and Supportive Measures

No specific antidote for clindamycin overdose is listed in the official documents; management is supportive. For mild cases of colitis, drug discontinuation is the primary step. For moderate to severe cases, regulators require consideration of management with fluid and electrolyte replacement, protein supplementation, and the use of an antibacterial drug effective against C. difficile colitis. These official statements structure the profile by confirming the possibility of systemic effects and mandating specific help-seeking actions upon accidental ingestion.

Therapeutic Uses of Dalacin 2%

What Dalacin 2% Treats: Main Uses and Benefits

The primary therapeutic domain for Dalacin 2% Vaginal Cream involves the management of Bacterial Vaginosis (BV), a condition presenting with localized discomfort and noticeable physiological strain. This localized therapy is applied to the affected area for the treatment of this specific infection and is relevant for easing symptoms related to localized functional stress.

This medication is commonly used across conditions characterized by acute or disruptive episodes of localized bacterial imbalance. The main clinical manifestations it is used to help manage include foul or fishy vaginal odor, abnormal discharge, and associated vaginal itching or burning. Applied in clinical settings where supportive symptom management is appropriate, the therapy may support the overall management of the condition. This helps to provide support that eases the overall symptom burden for the patient.

The medicine is applied in contexts involving heightened symptoms and supports the management of associated irritation. Used in situations involving recurrent or episodic manifestations, the medication may assist with restoring symptomatic comfort, helping patients cope more steadily with difficult episodes. The management of these symptoms contributes to easing the overall symptom load and supports improved day-to-day comfort during symptomatic periods. The application of this therapy is relevant for easing symptoms related to the presence of an unpleasant vaginal odor and abnormal secretion, which are key manifestations of BV.

Quick Fact: Relief for Malodorous Discharge This therapy supports the easing of symptoms related to the presence of an unpleasant vaginal odor and abnormal secretion, which are key manifestations of BV.

Regulatory References

  1. Clindamycin Vaginal: MedlinePlus Drug Information

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Dalacin 2% — official regulatory information

Category Official Regulatory Statement
Populations for whom use is allowed (as stated in label): Non-pregnant adult women for whom the treatment of Bacterial Vaginosis is indicated.
Populations for whom use is not recommended (if applicable): Paediatric patients (use not established); patients in the first trimester of pregnancy; and breastfeeding mothers.
Populations for whom use is contraindicated: Individuals with a history of hypersensitivity to clindamycin, lincomycin, or any excipients. Individuals with a history of regional enteritis, ulcerative colitis, or antibiotic-associated colitis.
Age-related eligibility rules: Safety and efficacy have not been established in paediatric patients. Use is generally restricted to post-menarche women. Clinical studies did not include sufficient numbers of subjects aged 65 and over to determine if they respond differently.
Condition-specific eligibility rules: Use requires caution in patients concomitantly receiving neuromuscular blocking agents. No dose adjustment is required for patients with mild to moderate renal or hepatic impairment.
Pregnancy and lactation eligibility status (if explicitly documented): Pregnancy: Not recommended in the first trimester; conditional use allowed during the second and third trimester if clearly necessary. Lactation: Not recommended; a decision to discontinue nursing or the drug is necessary.

Resulting Eligibility Structure

Official eligibility statements:

  • The medicine is contraindicated in patients with a history of bowel disease such as ulcerative colitis or antibiotic-associated colitis.
  • Use is contraindicated in individuals with known hypersensitivity to the drug or its components.
  • Safety and efficacy have not been established in paediatric patients, limiting eligibility to adults and post-menarche adolescents.
  • The official labeling requires caution when used concurrently with neuromuscular blocking agents.

Connection to the overall eligibility profile: Official regulatory documents define the eligibility profile of Dalacin 2% by establishing mandatory contraindications based on specific pre-existing gastrointestinal diseases and hypersensitivity. Eligibility is further classified as not established or not recommended for specific physiological states, including young children, the first trimester of pregnancy, and breastfeeding mothers, defining restricted use populations according to potential systemic risk.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

This section outlines the clinically relevant interactions and procedural constraints documented in official regulatory labeling for clindamycin vaginal cream.

Interaction Type Interacting Agent/Category Regulatory Classification
Pharmacodynamic Enhancement Neuromuscular Blocking Agents Use with Caution
Cross-Resistance Erythromycin, Lincomycin (Lincosamides) Clinically Significant
Physical/Material Degradation Latex or Rubber Products (Contraceptives) Avoid for Specified Duration

Documented Interactions

Systemic clindamycin, which is absorbed in small amounts after vaginal use, has neuromuscular blocking properties. This effect may enhance the action of other neuromuscular blocking agents, requiring caution if these medicines are co-administered. The regulatory profile also notes that cross-resistance has been demonstrated between clindamycin and the antibiotics lincomycin and erythromycin.

Procedural and Product-Specific Constraints

The cream contains excipients, specifically mineral oil, that may weaken latex or rubber products such as condoms or vaginal contraceptive diaphragms. Official labeling advises that the use of such barrier contraceptives is not recommended within 72 hours (three days) following the end of treatment. Furthermore, the use of other vaginal products (such as tampons or douches) or engaging in vaginal intercourse is also not recommended during the treatment period itself.

These constraints define the necessary requirements for concurrent product use and lifestyle considerations to maintain the safety and efficacy profile documented by regulatory authorities.

Mechanism of Action

Molecular Targeting of the Bacterial Ribosome

The mechanism is initiated by the active molecule binding precisely and reversibly to the 50S ribosomal subunit within susceptible bacteria. This molecular engagement blocks the essential translocation step, which is required for the pathogen to build proteins. This direct action on the protein synthesis machinery restricts the proliferation of the bacterial population, a physiological effect known as bacteriostasis.

Prodrug Activation and Localized Action

Clindamycin is formulated as an inactive phosphate prodrug that requires rapid hydrolysis in situ at the site of application to convert it into the active compound. This conversion facilitates the achievement of a high local concentration of the active molecule, engaging the inhibitory cascade that suppresses pathogen growth.

Mechanistic Constraints

The drug’s action is inherently limited by the bacterial cell's ability to mutate its target structure. Acquisition of resistance, such as 23S rRNA methylation, structurally prevents Clindamycin from binding to the 50S subunit, rendering the primary inhibitory mechanism functionally irrelevant against the resistant strain.

Dosage and Administration Information

Official Administration Protocol

Dalacin 2% Cream is formulated for a specific administration protocol. The medication is intended exclusively for intravaginal use; it is not for oral, dermal, or ophthalmic application.

Dosing and Scheduling

The prescribed dose is standardized at one applicator full of the cream, which is equivalent to approximately 5 grams or 100 mg of clindamycin (as the phosphate prodrug). This measured amount is inserted once daily. The administration is typically scheduled at bedtime as a usage principle intended to support retention of the product. The treatment is maintained consistently for a full course of 3 or 7 consecutive days, depending on the specific regimen required for the condition.

Use in Specific Populations

Usage guidelines address certain patient populations:

  • Pregnant Patients: A regimen of 7 consecutive days is typically utilized for patients in the second and third trimesters.
  • Older Adults (aged 65 and over): Standard protocols generally indicate no dose adjustment is routinely required.
  • Pediatric Patients: The safety and efficacy of this specific topical formulation are not established for those under 18 years of age.

Procedural Guidelines

Correct use requires the deployment of the supplied applicator to ensure the proper volume is inserted. If a dose is missed, the protocol is to resume the regular daily schedule immediately; doubling the subsequent dose to compensate for a missed application is not advised.

Recent Clinical Evidence

Research Evidence: Overview of Studies for Dalacin 2% Cream

Evidence for Use in Bacterial Vaginosis (BV)

Dalacin 2% Cream was evaluated in research exploring the condition known as Bacterial Vaginosis (BV), which is characterized by fluctuating or episodic manifestations and related to physiological imbalance. The primary research approach involved short-term randomized controlled trials (RCTs). These studies were designed to explore how symptoms change over time in the observed populations and research examined outcomes related to specific clinical signs, such as vaginal odor and discharge, which are among the outcomes related to physical discomfort.

These research efforts focused on evaluating changes in the bacterial environment and monitoring whether the specific diagnostic criteria for BV reached a predefined endpoint after a course of treatment. Findings describe patterns observed in the studies regarding the proportion of participants whose symptoms and microbiological status met the definition of a resolution within a short-term window, typically 5 to 14 days after treatment. Research highlights changes measured during the study period in the balance of vaginal bacteria.

Long-Term Studies and Follow-Up Data

While research has explored immediate changes, follow-up durations were limited in many primary clinical studies. After the initial treatment period, studies monitored patients over defined time intervals to track the frequency of the condition returning. Studies involving Dalacin 2% Cream, like those for many BV treatments, acknowledge that the condition is associated with acute or disruptive episodes, and studies report that the condition may return after initial measured resolution. Therefore, long-term effects are not fully established, particularly concerning the sustained absence of the condition beyond a few months.

Evidence in Special Populations

Dalacin 2% Cream was evaluated in specific populations beyond the general adult female population. Studies monitored pregnant women, specifically during the second and third trimesters, to gather findings related to its use during pregnancy. Additionally, research explored the use of the cream in post-menarchal adolescent females, and these groups were observed in broader studies. Data for certain groups remain insufficient for definitive conclusions, such as older adults, meaning results apply only to the populations studied.

Key Studies & References

  1. Clindamycin Vaginal: MedlinePlus Drug Information
  2. WHO Collaborating Centre for Drug Statistics Methodology: ATC Code G01AA10
  3. Systematic Review of Randomized Controlled Trials of Clindamycin for Bacterial Vaginosis

Frequently Asked Questions (FAQ)

Common questions about Dalacin 2% (FAQ)


Q: How quickly should I expect to see improvement after starting Dalacin 2%?

Official studies for this medication typically measure cure rates one month after the treatment course is completed. The official product information does not specify an exact timeframe for when initial symptom improvement may be expected during the course of treatment.


Q: What are the most common minor side effects reported with Dalacin 2% use?

According to official adverse reaction data, a very common side effect is a yeast infection (vulvovaginal candidiasis). Other common side effects documented in clinical trial data include headache, back pain, pelvic pain, nausea, vomiting, constipation, diarrhea, and vulvovaginitis.


Q: Is it normal to feel a mild burning or stinging sensation when first applying Dalacin 2%?

The official product information lists vulvovaginitis, which involves inflammation of the vulva and vagina, as a common side effect. While the label does not explicitly state that a burning or stinging sensation is a normal, expected part of the application process, the drug's components are known to be irritating if they contact sensitive areas like the eyes.


Q: Can Dalacin 2% cause skin irritation or redness?

Official documentation indicates that common side effects reported in clinical trials include vulvovaginitis. This condition is an inflammation of the vulva and vagina that can involve irritation, redness, and discomfort in the treated area.


Q: Does using other topical skincare products affect how Dalacin 2% works?

The official patient information advises against using other vaginal products, such as tampons or douches, during the entire treatment period. The regulatory documents do not provide specific guidance regarding the use of non-vaginal external skincare products.


Q: Is it safe to use Dalacin 2% while using birth control pills?

The official product label notes that the cream contains mineral oil, which can weaken latex or rubber products like condoms or diaphragms for up to 72 hours after treatment ends. The label does not specifically address interactions with hormonal birth control pills.


Q: What is the difference between Dalacin 2% and other clindamycin products?

Dalacin 2% is a brand-name, prescription-only formulation of clindamycin phosphate in an intravaginal cream at a 2% concentration. This product is distinct from other formulations containing clindamycin, which may be available in forms such as oral capsules or topical gels at different concentrations.


Q: Are there any long-term side effects associated with using Dalacin 2%?

Official regulatory safety documentation states that long-term studies to evaluate the potential for cancer (carcinogenic potential) have not been performed in animals for clindamycin. Data on long-term effects are generally limited.


Q: What should I do if I accidentally swallow a small amount of Dalacin 2%?

If accidental oral intake occurs, the effects are expected to be similar to those seen with orally administered clindamycin. Official product information suggests that general symptomatic and supportive measures may be indicated.


Q: Does sun exposure make Dalacin 2% side effects worse?

The regulatory documents for Dalacin 2% vaginal cream do not specifically list warnings related to sun exposure or phototoxicity. Warnings about sun exposure are sometimes found in the labels for topical clindamycin products used for acne on exposed skin areas.


Q: Are there different guidelines for using Dalacin 2% during a menstrual period?

Official warnings and precautions indicate that treatment with this medication is generally recommended to be postponed until after menstruation is completed. The patient information also advises against using tampons during the treatment period.


Q: What does the full list of inactive ingredients in Dalacin 2% include?

The regulatory description section lists the full excipient profile. Inactive ingredients include benzyl alcohol, cetostearyl alcohol, cetyl palmitate, mineral oil, polysorbate 60, propylene glycol, sorbitan monostearate, stearic acid, and purified water.


Q: Is it possible to develop a tolerance to Dalacin 2% over time?

The official microbiology sections describe how bacteria can develop resistance to clindamycin. This occurs when the bacterial cell structurally changes its target site, which prevents the medication from binding and becoming effective against that specific strain.


Q: Is Dalacin 2% absorbed into the bloodstream?

Regulatory pharmacokinetic studies indicate that the medication is absorbed systemically after intravaginal application. Approximately 5% (with a range of 0.6% to 11%) of the administered dose enters the bloodstream.


Q: Are there specific instructions for washing the treated area before applying Dalacin 2%?

The official procedural information details the importance of washing hands before and after each application. However, the label does not provide specific directions for pre-application washing of the treatment area itself.


Q: Can Dalacin 2% be used on open cuts or broken skin?

The product is strictly for intravaginal use and is not intended for use on other parts of the body. Warnings in the official labeling specify that contact with broken skin, such as in the eye area, should be avoided.


Q: Is there a generic version of Dalacin 2% available?

Dalacin 2% is the brand name. However, generic versions containing clindamycin phosphate vaginal cream at the 2% concentration are available from different manufacturers.


Q: Is it okay to use moisturizer after applying Dalacin 2%?

The official guidance advises against using other products that go inside the vagina, such as douches, during treatment. The label does not specifically address whether or not external moisturizers can be used after application of the cream.


Q: What are the reasons someone might not be able to use Dalacin 2% if breastfeeding?

Limited published data suggests clindamycin appears in human breast milk at low levels. Systemic exposure to clindamycin carries the potential to alter the infant's gut flora, which may result in effects such as diarrhea or yeast infection (candidiasis).

How should Dalacin 2% be stored and disposed of?

How to Store and Dispose of Dalacin 2% Cream

Official regulatory information mandates specific conditions for storing and discarding Dalacin 2% Cream (clindamycin phosphate vaginal cream).

Storage Requirements

The medicine must be stored at controlled room temperature, specifically between 20°C and 25°C (68°F and 77°F). It is explicitly required that the cream must not be refrigerated or frozen. The product should not be used after the expiry date shown on the packaging, and the tube must be kept tightly closed. For safety, the cream must always be stored out of the sight and reach of children.

Disposal Instructions

Discarding the product requires adherence to environmental rules. Unused or expired cream must not be thrown away via wastewater or household waste. Patients should consult a pharmacist for guidance on proper disposal. Furthermore, used disposable plastic applicators must not be flushed down the toilet.

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

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