Clindamycin

What Is Clindamycin?

Clindamycin is an antibiotic used to treat infections caused by certain types of bacteria, including some infections caused by bacteria that do not require oxygen to grow (anaerobic bacteria). It belongs to a group of medicines called lincosamide antibiotics.

Clindamycin is commonly prescribed for:

• Skin and soft tissue infections, including some caused by certain resistant staph bacteria
• Bone and joint infections
• Certain dental infections, and as a preventive antibiotic before some dental procedures in patients allergic to penicillin
• Infections inside the abdomen or pelvis
• Certain lung infections, including aspiration pneumonia
• Bacterial vaginosis, when applied as a vaginal cream or suppository
• Acne, when applied topically to the skin
• Other bacterial infections identified through clinical evaluation

Clindamycin is not effective against viral infections, such as the common cold or influenza.

Available formulations include:

• Oral capsules
• Oral liquid suspension
• Topical solution, gel, lotion, or foam, used for acne
• Vaginal cream or vaginal suppository, used for bacterial vaginosis
• Intravenous (IV) or intramuscular (IM) injection, typically used in hospital settings for more serious infections

The specific formulation and strength prescribed depend on the type and location of the infection or condition being treated, as determined by a licensed medical provider.

What Is the Recommended Dosage of Clindamycin?

There is no single dosage of clindamycin that applies to every patient. Dosage is individualized based on several factors, including:

• The specific infection or condition being treated
• The route of administration (oral, topical, vaginal, or injectable)
• The patient’s age
• Body weight, particularly in children
• Liver function, since clindamycin is processed primarily by the liver

Clindamycin is available in multiple dosage forms, including capsules, liquid suspension, topical preparations, vaginal products, and injectable forms. Oral courses are typically taken multiple times a day for a set number of days, while topical and vaginal products often follow once- or twice-daily application schedules.

Because incorrect dosing can reduce effectiveness or increase the risk of side effects, dosing decisions should always be made by a licensed medical provider based on a full clinical evaluation. Patients and caregivers should not adjust the dose, frequency, or length of treatment without medical guidance, and should always complete the full course as prescribed, even if symptoms improve before the medication is finished.

How Clindamycin Works

Clindamycin works by interfering with the ability of certain bacteria to produce proteins they need to grow and multiply. It does this by binding to a specific part of the bacterial cell (a structure called the ribosome), which blocks protein production inside the bacteria. This generally slows or stops bacterial growth, allowing the immune system to clear the infection, though at certain concentrations it may also directly kill some bacteria.

When used topically for acne, clindamycin reduces the population of acne-related bacteria on the skin. When used vaginally for bacterial vaginosis, it works against the bacteria associated with that condition.

Clindamycin treats active bacterial infections or manages certain bacterial skin and vaginal conditions; it does not prevent unrelated future infections and has no effect on viruses.

Is a Prescription Required to Buy Clindamycin Online?

Yes. Clindamycin, in its oral, injectable, vaginal, and prescription-strength topical forms, is a prescription-only medication.

Patients should consult an appropriate licensed medical provider before starting clindamycin, such as:

• A primary care physician or family doctor
• A dermatologist, for acne or skin infections
• A gynecologist, for bacterial vaginosis
• A dentist, for certain dental infections or antibiotic prophylaxis
• An infectious disease specialist, for complex or serious infections

Patients should be cautious of any website or seller offering clindamycin without a prescription, at unusually low prices, or marketed as a veterinary product for human use. These products may be counterfeit, contaminated, mislabeled, or contain incorrect dosages, all of which can pose serious health risks. Clindamycin should only be obtained through a licensed pharmacy, using a prescription from a legitimate healthcare provider.

Side Effects of Clindamycin

Like all medications, clindamycin can cause side effects. Digestive side effects are relatively common with oral and injectable forms, while topical and vaginal forms mainly cause local effects. One serious intestinal side effect is important enough that it is discussed separately below.

Common Side Effects

These are usually mild and often resolve on their own:

• Nausea
• Vomiting
• Diarrhea (mild, non-severe)
• Abdominal pain
• With topical use: dryness, redness, peeling, or a mild burning or stinging sensation at the application site
• With vaginal use: local irritation, itching, or discharge

Serious Side Effects

Serious side effects are uncommon but can occur. Contact a healthcare provider or seek immediate medical attention if any of the following occur:

• Severe, watery, or bloody diarrhea, especially if it occurs during treatment or for several weeks after treatment ends. Clindamycin, more so than many other antibiotics, has been associated with a serious intestinal condition (sometimes called antibiotic-associated colitis or C. difficile-associated diarrhea) that can range from mild to life-threatening. This risk exists with oral and injectable forms in particular, and any significant change in bowel habits during or after treatment should be reported to a provider promptly, since this reaction can occur even after a short course.
• Signs of a severe allergic reaction, such as facial or throat swelling, difficulty breathing, or widespread hives
• Severe skin reactions, including blistering, peeling, or a widespread rash accompanied by fever
• Yellowing of the skin or eyes, dark urine, or unusual fatigue (possible signs of liver problems)

This list is not exhaustive. Patients should report any new or concerning symptoms to their healthcare provider.

Drug Interactions

Clindamycin has fewer major drug interactions than some other antibiotic classes, but a few are clinically relevant.

Categories of substances that may interact with clindamycin include:

• Neuromuscular-blocking medications, sometimes used during surgery or in intensive care, since clindamycin may enhance their effects
• Other antibiotics that work at a similar site on the bacterial ribosome, such as erythromycin, which may reduce clindamycin’s effectiveness if combined
• Blood thinners, such as warfarin, where antibiotics including clindamycin may occasionally affect blood-clotting test results

Patients should also tell their provider about any over-the-counter medications, vitamins, herbal products, or supplements they are taking, as these can sometimes interact as well.

Before starting clindamycin, patients and caregivers should give their licensed medical provider or pharmacist a complete and current list of all medications and supplements being used. This helps the provider assess for potential interactions and adjust treatment if necessary.

Safety & Important Considerations

Several factors should be discussed with a healthcare provider before starting clindamycin:

• Intestinal risk: Clindamycin carries a well-recognized risk of causing C. difficile-associated diarrhea and colitis, which can be serious. Patients should be aware of this risk before starting treatment and should know to seek care promptly if significant diarrhea develops, even after finishing the medication.
• Liver function: Clindamycin is processed by the liver, and patients with significant liver impairment may need dose adjustment or closer monitoring.
• Kidney function: Dose adjustments are less commonly needed for kidney impairment alone, but this should still be discussed with a provider, particularly in patients with combined liver and kidney disease.
• Pregnancy: Clindamycin is used during pregnancy in certain situations when a healthcare provider determines it is appropriate, including some vaginal formulations for specific conditions.
• Breastfeeding: Clindamycin can pass into breast milk in small amounts. Breastfeeding patients should discuss risks and benefits with their provider.
• Children: Dosing for children is generally based on body weight and requires careful calculation by a healthcare provider or pharmacist.
• History of colitis: Patients with a prior history of inflammatory bowel disease or antibiotic-associated colitis require careful evaluation before starting clindamycin.
• Monitoring: Depending on individual health history and the form of clindamycin used, a provider may recommend monitoring for symptoms, particularly changes in bowel habits, throughout treatment and for some time afterward.

This medication should only be used for the specific condition and duration prescribed. Use for conditions not evaluated and approved by a healthcare provider is not recommended.

Who This Medication Is For

Clindamycin is generally prescribed for patients who have been diagnosed with a bacterial infection known or likely to respond to this class of antibiotic, or for patients with acne or bacterial vaginosis who may benefit from topical or vaginal treatment. This can include adults and children, depending on the specific condition and a provider’s clinical judgment, and is often considered for patients who cannot take penicillin-class antibiotics due to allergy.

Typical approved uses include certain skin, bone, joint, dental, abdominal, and lung infections, as well as acne and bacterial vaginosis, as identified by a healthcare provider through clinical evaluation and, when appropriate, laboratory testing.

Whether clindamycin is an appropriate choice depends on the type of bacteria or condition involved, the patient’s health history, and other individual factors that only a licensed provider can assess.

Who Should Not Take Clindamycin

Clindamycin is not appropriate for everyone. It should generally be avoided in patients who:

• Have a known allergy to clindamycin or the related antibiotic lincomycin
• Have a prior history of C. difficile-associated colitis or significant antibiotic-associated diarrhea, unless a provider determines the benefits outweigh the risks in a specific situation
• Have significant, unaddressed liver impairment, without appropriate guidance from a provider

This is not a complete list of contraindications or precautions. A full medical history should be reviewed by a licensed healthcare provider before starting treatment.

What to Do If You Miss a Dose

If a dose of clindamycin is missed:

• Take the missed dose as soon as it is remembered, unless it is almost time for the next scheduled dose.
• Do not take two doses at the same time or take an extra dose to make up for the missed one.
• For topical or vaginal products, simply apply the next dose at the regular scheduled time; do not apply extra product to compensate.
• If there is uncertainty about how to proceed, or if multiple doses have been missed, contact a licensed medical provider or pharmacist for guidance rather than guessing.

Completing the full prescribed course, even after symptoms improve, is important for oral and injectable treatment to work as intended.

Related medications to Clindamycin

Clindamycin is a lincosamide antibacterial used in specific bacterial infections and formulations. A related ingredient page is Clindamycin-Clotrimazole when the dosage form and indication are appropriate. The combination also contains an antifungal ingredient and has a different treatment role.

Storage Instructions

• Store clindamycin capsules at room temperature, away from excessive heat.
• Keep the medication in its original container, protected from moisture and light.
• Liquid suspension and some topical or vaginal products may have specific storage requirements, including refrigeration in some cases; follow the pharmacist’s specific instructions.
• Do not use the medication past its labeled expiration date, and discard any unused mixed liquid suspension after the recommended period.
• Keep all forms of clindamycin out of reach of children and pets, and store it in a location they cannot access.
• Dispose of any unused or expired medication according to local guidelines or pharmacist instructions, rather than discarding it in household trash or flushing it, unless specifically instructed to do so.

Disclaimer:

This page is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Clindamycin should only be used under the guidance of a licensed medical provider, such as a physician, dermatologist, gynecologist, or infectious disease specialist, depending on the condition being treated.

Patients and caregivers should consult a licensed medical provider before starting, changing, or stopping treatment with clindamycin. Treatment decisions should always be based on a complete clinical evaluation, including individual health history, current medications, and the specific condition being treated, as determined by a qualified healthcare professional.