Sumamed STD

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Medically reviewed

Marina Burgos

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 Sumamed STD

Quick Facts: Sumamed STD (Azithromycin)

Property Description
Active ingredient Azithromycin
Form Oral, Film-Coated Tablets
Pharmacological class Macrolide Antibiotic
General Purpose Treatment of bacterial infections
Origin Synthetic, Aza-macrolide derivative

Sumamed STD: Definition and Pharmacological Class

Sumamed STD is a specific prescription-only medicine whose sole active component is the antibiotic Azithromycin. It is classified as a Macrolide antibiotic, belonging to the larger group of antimicrobial agents used to stop the proliferation of susceptible bacteria. Azithromycin is an established and widely utilized medication in the treatment of bacterial infections.

This drug entity is chemically classified as an aza-macrolide, a semisynthetic derivative recognized for its specific structural modifications. These structural modifications result in a prolonged tissue half-life, a key characteristic of Azithromycin that supports simplified dosing regimens. This extended activity is why the medicine can often be taken over a short duration. The "STD" designation applied to this formulation contextualizes its intended use in short-course therapy regimens targeting specific infectious contexts.


Composition, Origin, and Dosage Form

The preparation is a single-ingredient product featuring Azithromycin as the active substance, which is of synthetic origin rather than natural extraction. Sumamed STD is an oral preparation, commonly supplied as film-coated tablets designed for an oral route of administration.

Its composition includes the active ingredient along with necessary pharmaceutical excipients required to create the compressed, solid dosage form, ensuring both stability and facilitating proper systemic absorption. This formulation choice, using film-coated tablets, is clinically recognized for improving patient adherence. Understanding the composition and form clarifies that this is a systemically acting medicine, taken by mouth, that delivers a precisely measured amount of the core antibiotic into the body.


General Purpose and Antimicrobial Activity

The general purpose of Sumamed STD is to provide a highly effective broad-spectrum antimicrobial agent for combating bacterial infections susceptible to Azithromycin. Its action is to stop bacterial growth by interfering with the pathogen's ability to produce essential proteins, thereby reducing the infectious load. The general benefit is focused entirely on its capacity to inhibit the spread and survival of harmful bacteria, a function inherent to its chemical structure and pharmacological classification.

What side effects are possible with Sumamed STD?

Possible Side Effects and Safety Information

The official safety profile for Sumamed STD (Azithromycin) is based on regulatory documentation from authorities like the FDA and EMA, which classify documented adverse reactions and safety constraints.

Frequency-Classified Adverse Reactions

Adverse effects are categorized by frequency, ranging from Very Common (e.g., diarrhoea) to Rare events. Common reactions (affecting up to 1 in 10 users) include nausea, abdominal pain, vomiting, and headache. Uncommon reactions may involve conditions like hepatitis, insomnia, palpitations, or skin photosensitivity.

System Organ Classes and Serious Reactions

Adverse reactions are formally grouped by the system affected, such as Gastrointestinal Disorders (diarrhoea, nausea, vomiting) and Nervous System Disorders (headache, dizziness). The regulatory labels highlight rare but clinically significant adverse reactions, particularly in the Cardiac Disorders class, where QT interval prolongation carries a risk of potentially fatal irregular heart rhythms like Torsades de pointes.

Serious reactions also include severe hepatotoxicity, sometimes leading to fatal hepatic failure, and rare, severe hypersensitivity reactions such as Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN). Clostridioides difficile-associated diarrhoea (CDAD) is also a documented serious risk.

Population and Time-Related Safety Notes

Official safety documents note specific considerations for patient populations. Older adults may be more susceptible to cardiac arrhythmias. Caution is required in patients with severe renal or hepatic impairment. Additionally, the risk of CDAD has been reported to occur up to two months or more after treatment, and hearing loss has been associated with long-term, high-dose use.

Overdose and Emergency Response

Overdose and When to Seek Help: Official Regulatory Information

This information is based exclusively on the overdose sections of authoritative government regulatory documents.


Overdose Scope

Domain Official Regulatory Statement
Documented overdose presentations Overdose is formally described as an exaggeration of known adverse reactions. Clinical signs include severe gastrointestinal upset, such as nausea, vomiting, diarrhea, and abdominal pain.
Physiological systems affected Primary concern involves the Cardiovascular system (risk of severe arrhythmias), the Gastrointestinal system, and potential for Hepatotoxicity (liver damage).
Population-specific overdose notes Elderly patients and individuals with pre-existing cardiac risk factors (e.g., known QT prolongation or electrolyte disturbances) are noted in regulatory labeling as having increased susceptibility to severe cardiac outcomes.
When immediate medical help is required Immediate medical help must be sought upon any suspicion of overdose. Emergency services must be contacted if the individual has collapsed, experienced a seizure, or is unresponsive.

Resulting Overdose Structure

Official overdose statements:

  • Overdose is explicitly linked to the potential for a Prolonged QT interval, which carries the risk of life-threatening arrhythmias like Torsades de pointes or fatal irregular heart rhythm.
  • No specific antidote is known for Azithromycin overdose.
  • Management is officially restricted to general symptomatic and supportive measures along with necessary cardiovascular monitoring.

Connection to the overall overdose profile:

Regulatory documents define the overdose profile primarily through the risk of severe cardiac events and marked gastrointestinal distress. This severity dictates the official requirement to seek immediate medical attention for any suspected overdose, emphasizing hospital-based supportive care and continuous observation to manage the established cardiotoxicity risk.

Therapeutic Uses of Sumamed STD

Main Therapeutic Uses and Patient Benefits

Azithromycin is utilized for the treatment of infections across several therapeutic domains. This medication is applied across domains where additional symptomatic support is needed, addressing conditions where symptoms may intensify temporarily.

The drug is commonly used to help with acute bacterial episodes, including pneumonia, bronchitis exacerbations, sinusitis, and acute otitis media (middle ear infection). It is considered relevant for short-term symptomatic assistance, used within therapeutic areas involving heightened responses, such as for specific sexually transmitted infections like chlamydia and gonorrhea.

This application contributes to easing the overall symptom load and supports the patient during difficult episodes by easing distress.

“It is considered relevant for conditions presenting with systemic or localized discomfort across multiple therapeutic areas.”

Quick Fact: Relief for Acute Discomfort

Symptom Domain Key Symptoms Managed Patient Benefit
Respiratory Cough, fever, sore throat Assists with maintaining functional stability during illness.
Urogenital Discharge, painful urination (dysuria) Supports the process of symptomatic clearance.
Skin/Tissue Redness, swelling, localized tenderness Plays a role in managing localized inflammatory signs.

Regulatory References

  1. NIH MedlinePlus overview of Azithromycin uses

Eligibility and Restrictions for Use

Who Can and Cannot Use Sumamed STD?

The population eligibility for Sumamed STD (Azithromycin) is strictly defined by government regulatory agencies based on contraindications, age, and pre-existing medical conditions.


Absolute Non-Eligibility (Contraindicated)

Individuals must not use this medicine if they have a:

  • Known hypersensitivity to azithromycin, erythromycin, or any macrolide or ketolide antibiotic.
  • History of cholestatic jaundice or hepatic dysfunction associated with prior azithromycin use.

Eligibility by Population Status

Population Group Regulatory Stance
Infants (< 6 months) Safety and effectiveness have not been established for most labeled uses.
Children (< 45 kg) The tablet form is generally not suitable; other formulations are required.
Older Adults Use is permitted, but caution is recommended due to increased susceptibility to arrhythmia risks.
Pregnant Women Should only be used if the clinical benefit outweighs the potential risk.
Nursing Mothers Azithromycin is excreted in human milk; risk to the infant must be considered.

Eligibility by Condition

Use requires caution in patients with:

  • Severe Renal Impairment (GFR < 10 mL/min).
  • Ongoing Proarrhythmic Cardiac Conditions (e.g., known QT prolongation).
  • Myasthenia Gravis (risk of symptom exacerbation).

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents define Azithromycin's interaction profile around specific pharmacokinetic, pharmacodynamic, and administration constraints. The drug does not significantly interact with the hepatic CYP450 system, differentiating its metabolic profile from some other macrolides.

Contraindicated and Restricted Combinations

Co-administration with other medicinal products known to prolong the QT interval (such as Quinidine, Amiodarone, or Cisapride) is generally prohibited due to the additive risk of serious cardiac arrhythmias. Furthermore, the combination with Ergot Derivatives (like Ergotamine) is restricted due to a theoretical risk of ergotism.

Documented Pharmacokinetic Interactions

Azithromycin may increase the serum levels of P-glycoprotein (P-gp) substrates such as Digoxin and Colchicine, necessitating careful monitoring. Co-administration with the HIV protease inhibitor Nelfinavir is officially documented to increase Azithromycin's systemic exposure ( Cmax and AUC). Post-marketing reports also note the potentiation of anticoagulation effects when combined with Coumarin-type oral anticoagulants (e.g., Warfarin), requiring coagulation monitoring.

Timing and Population Considerations

Administration with aluminum/magnesium-containing antacids requires a mandatory separation interval of at least 2 hours to mitigate a documented reduction in Azithromycin peak serum concentrations ( Cmax). In patients with severe renal impairment (GFR leq 10 mL/min), systemic exposure to Azithromycin is officially documented to be increased by mathbf33%.

Mechanism of Action

The action of Sumamed STD, which contains the antibiotic Azithromycin, is defined by its mechanism of interference with the cellular machinery of susceptible bacteria. Its mechanism is understood through two principal domains.

Inhibiting the Bacterial Protein Assembly Line

This domain describes the drug's molecular action: binding to the bacterial 50S ribosomal subunit to inhibit protein production. This interaction physically blocks the ribosome's ability to complete its task, stopping the cell's capacity to build nascent polypeptide chains necessary for function. The resulting physiological effect is the induction of bacteriostasis, which is the cessation of bacterial proliferation.

️ Molecular Limitations and Evasion Mechanisms

This domain addresses the constraints of the mechanism, specifically the bacterial biological strategies that impede the drug's effectiveness. These include the bacteria's ability to chemically modify the 50S binding site using methylase enzymes or to actively pump the drug out of the cell via efflux mechanisms. These physiological counter-strategies impede Azithromycin from reaching its target and initiating the bacteriostatic effect.

Dosage and Administration Information

How to Use Sumamed STD: General Administration Guidelines

Sumamed STD, containing azithromycin, is an antimicrobial agent whose usage is defined by specific administration routes, frequencies, and dosage patterns. The primary route for this formulation is oral, delivered via film-coated tablets. The active substance is also administered intravenously (IV) for initial therapy in certain severe infections, often serving as a precursor to completing the course orally.


Established Dosing Patterns

Administration typically follows a once-daily schedule, capitalizing on the drug’s prolonged tissue half-life. Standard regimens include a 3-day course of 500 mg daily or a 5-day course beginning with 500 mg on day one, followed by 250 mg daily. For specific indications, a single dose of 1,000 mg is administered.

Administration Constraint Established Instructions
Food Intake Tablets may be taken with or without food.
Antacid Separation Do not take simultaneously with aluminum- or magnesium-containing antacids; separate by at least one to two hours.
Older Adults The standard adult dosage regimen is generally applied.

IV administration must be given as an infusion over at least 60 minutes and is strictly not to be administered as an intramuscular injection or rapid bolus. If a dose is missed in a multi-day regimen, the standard protocol is to take it as soon as possible, then resume the next dose at the regularly scheduled time.

Recent Clinical Evidence

Research evidence / Overview of studies for Azithromycin

Evidence for Uncomplicated Urogenital Infections (Chlamydia and NGU)

Research has explored the use of this compound in conditions characterized by fluctuating or episodic manifestations such as Chlamydia trachomatis infection and Non-Gonococcal Urethritis (NGU). These trials was studied for outcomes related to systemic or functional imbalance, with the primary goal of measuring microbiological cure (clearance confirmed by a negative test result) and clinical response. The populations applied in studies examining patient-reported experiences typically included non-pregnant adults and adolescents.

Studies monitored the measured clearance rates in the tested populations. Studies reported measurements of how patient-reported outcomes describing perceived discomfort evolved in the observed populations. Comparative research has also examined how the measured outcomes relate to other research treatments.


Evidence for Acute Respiratory Conditions

The compound was evaluated in studies for conditions associated with acute or disruptive episodes, including specific types of Community-Acquired Pneumonia (CAP) and acute exacerbations of Chronic Bronchitis (ABECB). These trials focused on outcomes monitoring physiological strain or stress and outcomes reflecting daily functioning or activity level, such as the time it took for participants to achieve clinical stability and the outcomes reporting changes in clinical status.

Studies monitored the speed at which participants achieved clinical stability, and research highlights changes measured during the study period related to that endpoint. Findings describe patterns observed in the studies related to the evolution of outcomes related to physical discomfort over defined time intervals.


What is Still Uncertain About Azithromycin Evidence

The body of evidence evidence highlights what is known — and what is still uncertain about the overall research landscape. A major area where research is ongoing involves tracking and monitoring the potential emergence of microbial resistance, which may influence future treatment response patterns in the observed populations.

Evidence quality varies across studies for treating infections caused by less common organisms, and for certain complex patient populations. Findings were mixed regarding the measured cure rates for certain infections like non-chlamydial NGU. Research does not determine whether an individual will respond similarly to the group patterns reported in the studies.

Frequently Asked Questions (FAQ)

Common questions about Sumamed STD (FAQ)

Q: Does Sumamed STD have any known interactions with common birth control pills?

A: Official drug labels do not commonly list oral contraceptives as a major interaction concern. However, some sources suggest that azithromycin may reduce the effectiveness of the estrogen component (ethinyl estradiol) in certain women. This suggests that monitoring may be needed, and information should be discussed with a healthcare provider.

Q: Are there any age restrictions for who can use Sumamed STD?

A: The safety and effectiveness of the tablet formulation have not been established for infants under 6 months of age. For children and adolescents, the appropriate form of the medicine and the necessary dosing are typically determined based on the patient's body weight and the specific type of infection being treated.

Q: Are there common over-the-counter medications that might interact with Sumamed STD?

A: One known administrative constraint is the need to separate azithromycin from aluminum- or magnesium-containing antacids by at least two hours. However, official regulatory documentation generally notes no significant interaction with commonly used non-prescription pain relievers like paracetamol (acetaminophen).

Q: Why is it important to complete the entire course of the medication, even if symptoms improve?

A: The prescribed duration of treatment is intended to maintain the necessary therapeutic drug concentration in the body to eliminate the infection. Stopping the course early may prevent the medicine from reaching full effectiveness, which is a known factor that contributes to the potential development of microbial resistance.

Q: What kind of research has been done on Sumamed STD for specific STD pathogens?

A: Research has specifically examined the compound for treatment of infections caused by the organisms Chlamydia trachomatis and those leading to Non-Gonococcal Urethritis (NGU). It has also been explored as part of regimens for other organisms, such as Neisseria gonorrhoeae, depending on susceptibility.

Q: Is it necessary for a partner to also be treated?

A: For sexually transmitted infections, official public health guidance recommends that all sexual partners should be evaluated and treated to prevent reinfection and onward transmission. Official guidance highlights this as a step to prevent reinfection and onward transmission, which is standard practice in public health.

Q: Can Sumamed STD be taken with common pain relievers like paracetamol?

A: Official documents generally do not describe a clinically significant interaction between the active ingredient, azithromycin, and the common pain reliever paracetamol (acetaminophen). All information regarding drug interactions is best reviewed with a healthcare professional.

Q: Does Sumamed STD work against all types of sexually transmitted infections?

A: Azithromycin is an antibiotic, meaning it is only effective against bacterial infections that are susceptible to it, such as those caused by Chlamydia trachomatis. It is not effective against viral STIs (like HIV or Herpes), fungal infections, or parasitic infections.

Q: How long after taking Sumamed STD can someone expect it to start working?

A: While the medicine begins acting against susceptible bacteria within a few hours of the first dose, the time it takes for a person to notice an improvement in their symptoms can vary. Symptom improvement is generally described as beginning within 1 to 3 days of starting the regimen, although individual response times may vary.

Q: Is it necessary to wait a certain amount of time before having sexual contact after treatment?

A: Official public health guidance for treating certain STIs recommends that a person abstain from sexual contact for 7 days after completing the full course of treatment. This time frame is generally advised to reduce the risk of transmission and to allow for therapeutic effect.

Q: Are there any specific foods or drinks that should be avoided with Sumamed STD?

A: The standard tablet formulation may be taken with or without food. Official documents generally list no specific food items, such as grapefruit or dairy, that must be strictly avoided with this medicine, unlike with some other antibiotics.

Q: Can Sumamed STD cause a temporary change in taste or smell?

A: Official safety documents list changes in taste (dysgeusia) and smell (anosmia or parosmia) as reported adverse reactions. While these effects are documented, their frequency is typically categorized as uncommon or rare.

Q: What are the signs of a severe allergic reaction to look out for?

A: Signs of a serious allergic reaction, which require urgent medical attention, include difficulty in breathing or swallowing, swelling of the face, lips, or tongue, and severe hives or a spreading rash. The appearance of these symptoms is an indication that the medicine should be stopped.

Q: What is the success rate described in clinical trials for treating common STDs?

A: Clinical trials for treating Chlamydia trachomatis with a single dose have measured microbiological cure rates that approach 97% in some study populations. This percentage reflects the general findings of the study group, and individual responses may vary from the results reported in trials.

Q: Can a person take Sumamed STD if they have an existing stomach ulcer?

A: Official regulatory documents do not list an existing stomach ulcer as a specific contraindication for use. However, the medicine is known to cause gastrointestinal side effects like stomach pain, nausea, and vomiting, which is a factor that should be reviewed with a healthcare provider.

Q: Does Sumamed STD interact with any common herbal supplements?

A: Official drug labels typically do not report specific, known interactions with common herbal supplements. It is considered standard medical practice for patients to inform their healthcare provider of all supplements, including herbal products, they are currently taking.

Q: Is it described that taking the medicine on an empty stomach makes a difference?

A: The official administration guidance states that the standard tablet formulation may be taken with or without food. This is because food intake does not significantly affect the total amount of the drug absorbed by the body, ensuring consistent action.

Q: Can Sumamed STD affect the body's natural bacteria?

A: Yes. Like many antibiotics, this medicine can alter the balance of natural bacteria in the gut, sometimes referred to as the microbiome. In rare instances, this alteration may lead to a serious condition known as Clostridioides difficile-associated diarrhea (CDAD).

Q: What steps should be taken if a rash appears after taking the medication?

A: If a rash appears, the official guidance suggests the medicine should be stopped. If the rash is accompanied by other serious signs like fever, blisters, or swelling, a healthcare professional should be contacted urgently as these may be signs of a serious, documented reaction.

Q: Can this medication be used to prevent an STD after exposure?

A: The use of this drug for the prevention of an STD after exposure (prophylaxis) is sometimes evaluated and described in public health guidelines for specific infectious agents. Whether this approach is appropriate for an individual is a determination made by a healthcare provider.

Q: What if the medication seems to be having no effect?

A: If symptoms do not improve after a few days of treatment, or if they worsen, consultation with a healthcare provider is generally recommended. This lack of response could indicate that the infection is caused by an organism that is non-susceptible to the antibiotic, or that another medical condition is present.

Q: What is the expected timeline for a person to feel completely better?

A: While noticeable symptom improvement may begin within 1 to 3 days, the time it takes to feel completely better can vary widely based on the specific infection and its initial severity. Complete resolution of symptoms may continue after the entire antibiotic course is finished.

Q: Are there any official warnings about driving or operating machinery?

A: Official regulatory documents generally state that this medicine is not expected to affect the ability to drive or operate machinery. However, if a person experiences any side effects like dizziness or vision changes, caution is generally advised.

Q: Is the treatment known to cause any mood changes or anxiety?

A: The medicine is associated with adverse reactions that affect the nervous system. Official safety reports have documented instances of nervousness, anxiety, and in rare cases, an aggressive reaction as psychiatric side effects.

How should Sumamed STD be stored and disposed of?

How to Store and Dispose of Sumamed STD (Azithromycin Tablets)

Official regulatory guidelines strictly define the conditions necessary to store and dispose of azithromycin tablets to maintain stability and ensure safety.

Mandatory Storage Requirements

  • Temperature: Store the tablets at room temperature, which typically ranges between 20 C and 25 C (68 F and 77 F), and ensure storage is maintained below 30 C (86 F). The medicine must not be frozen.
  • Protection: The tablets must be kept in their original, tightly closed container and protected from both moisture and direct light.
  • Child Safety: The product must be stored out of the sight and reach of children.

Official Disposal Protocol

Expired or unused medication must be disposed of according to established procedures. Authorities require that the product be discarded via a drug take-back program or returned to a pharmacy where available. The medicine must not be flushed down a toilet or disposed of in wastewater.

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

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