Rx required in the US, UK, and Canada

Clindamycin

Also called Cleocin. Lincosamide antibiotic.

Some anaerobic, dental, and skin infections when a clinician accepts a higher risk of C. difficile. Not a first-line drug for routine problems.

Last reviewed 2 November 2026. RxNorm 2582. SNOMED CT substance 372786004.

What clindamycin treats

Primary uses clinicians actually reach for this drug for. Local resistance and your own history can take a use off the list.

Some serious anaerobic and streptococcal infections when the clinician accepts the C. difficile risk.
Some dental infections in people who cannot take a preferred drug, always as an adjunct to dental care.
Some skin infections, and some uses in penicillin-allergic patients. It is not automatic MRSA coverage and it is not a mild-illness default.

Topical clindamycin for acne is a different product. Swallowing topical solution or using an oral capsule for acne because a gel ran out is not the plan.

What it does not treat

Colds, flu, COVID-19, and bronchitis
Routine sinusitis
Uncomplicated UTI
A tooth infection with no dentist
Mild problems that amoxicillin, cephalexin, or no antibiotic would cover

Forms, dosing examples, and how to take it

Forms

Capsules, commonly 150 mg and 300 mg
Oral solution
Topical gel, lotion, and vaginal cream. Those are not oral doses.
Injection, which is a hospital or clinic drug

Adult examples

Adult oral labeling uses a wide range, often 150 mg to 450 mg every 6 hours, depending on severity. That width is exactly why you do not choose a dose from a search result. C. difficile risk is a reason to use a narrower, safer drug whenever one will work.

Educational examples only. Not a dosing instruction for a named patient.
Situation	Example adults may see on a label or guideline	Limit
Serious infections for which a clinician chooses oral clindamycin	Often 150 mg to 450 mg every 6 hours for a defined course	The top of that range is not a target. Kidney and liver status and the infection decide.
Dental infection in a patient who cannot take first-line drugs	A dentist or physician sets a short adjunctive course	Drainage or extraction is still required. Swelling of the face or neck is an emergency.
Routine sinus, bladder, or chest-cold symptoms	No clindamycin dose	The boxed warning makes this a particularly bad “just in case” drug.

Food, minerals, and administration

Take capsules with a full glass of water so they do not stick in the esophagus.
Food can be used if the drug upsets the stomach, unless the label of your product says otherwise.
Call promptly for watery diarrhea, cramps, or fever during the course or in the weeks after. Do not start an anti-diarrheal unless you are told to.
Tell the clinician about prior C. difficile, colitis, liver disease, and other antibiotics you just took.

Can an online doctor prescribe clindamycin?

Yes only inside the narrow band below. The same visit is supposed to refuse the drug outside that band.

When a prescription is plausible

Sometimes, for a narrow problem, after the clinician explains why a safer drug will not do and why the C. difficile risk is acceptable.
A careful service refuses clindamycin for convenience, for a cold, and for a simple UTI.

What the visit should cover

The penicillin reaction, in detail, because “allergy” is the usual reason people ask for this drug.
Prior C. difficile or severe antibiotic-associated diarrhea.
Whether the infection is dental, skin, or something that needs in-person drainage.
Liver disease and the ability to recognize diarrhea that should stop the drug and trigger a call.

When the clinician should refuse

A first request for a routine infection that has a safer first-line antibiotic.
Any viral illness.
A patient with recent C. difficile, unless a specialist is managing a serious infection with no alternative.
Facial swelling, trouble swallowing, or a skin infection that is spreading. Those need emergency or in-person care, not a capsule in the mail.

How same-day e-prescriptions and local pickup work. If the drug is prescribed, use a pharmacy you can reach today. Mail order is the wrong speed for an acute infection.

Side effects, allergies, pregnancy, and alcohol

Often mild

Nausea
Metallic or unpleasant taste
Mild stomach pain
Rash that still needs a call

Get care

Watery diarrhea, which can be C. difficile and can be fatal
Bloody stool, fever, and severe cramps
Trouble swallowing because a capsule stuck
Allergic swelling or wheezing
Yellow skin or severe rash

Allergies and cross-reaction

Clindamycin is a lincosamide, not a penicillin and not a macrolide. A penicillin allergy does not prove you need clindamycin, and a clindamycin allergy does not tell you which penicillin is safe. Many penicillin-allergic patients can take a different beta-lactam. That judgment is the point of the visit.

Pregnancy

Clindamycin is used in pregnancy for some serious infections when the benefit is clear, including some obstetric infections. It is not a default telehealth drug for a mild problem in pregnancy.

Alcohol

No disulfiram-style warning like metronidazole. Alcohol still worsens nausea and dehydration and does not justify using a high C. difficile-risk drug.

Severe watery diarrhea during or after any antibiotic can be C. difficile. Mouth or throat swelling is an emergency: call 911 or 999.

Generic, coupon, and telehealth pickup

These are budgeting bands for a common U.S. generic fill, not a national average and not a GoodRx quote. Discount-card prices change by pharmacy and ZIP code, and a card usually cannot be combined with insurance on the same fill. A telehealth visit is a separate bill, often advertised around $29 to $129 in late October 2026. The medicine is extra. Ask the pharmacy for today’s cash price and today’s coupon price before you travel.

Average-style planning bands for budgeting. Confirm the live cash price and the live coupon.
Product	U.S. cash planning band	Discount-card band, GoodRx-type	Telehealth plus local pickup
Generic clindamycin 300 mg, about 21 to 28 capsules	Often about $25–$80	Often about $15–$50	Visit fee plus local pickup. A high capsule count is a reason to ask whether a safer drug exists.
Brand Cleocin capsules	Usually higher	Generic is the usual fill	Topical Cleocin is a different prescription and a different price.

Questions about clindamycin

Why is C. difficile on the clindamycin box?

Because this antibiotic is strongly associated with C. difficile colitis, which can be severe or fatal and can start after you feel better. That is an FDA boxed warning. It is the reason not to use clindamycin when a safer drug will work.

Can telehealth prescribe clindamycin for a tooth infection?

Sometimes as a bridge for a penicillin-allergic patient, and only alongside a dental plan. Face or neck swelling, fever, or trouble swallowing is an emergency department problem. Capsules do not drain the tooth.

I have a penicillin allergy. Is clindamycin the next step?

Not automatically. Many people labeled allergic can still take a penicillin or a selected cephalosporin. Clindamycin’s C. difficile risk means it should not be the reflex substitute. Tell the clinician what the reaction actually was.

Can I drink alcohol with clindamycin?

There is no Flagyl-type ban. Alcohol worsens stomach upset. Diarrhea plus alcohol is a reason to call, not a reason to take an anti-diarrheal and continue.

What should I do if I miss a dose?

Take a missed dose when you remember unless it is close to the next dose. Skip it then. Do not take two doses at once. If you vomit soon after a dose, ask the pharmacist before you repeat it. The label and the pharmacist outrank this sentence.

Labels: DailyMed. Stewardship: CDC. Pharmacy checks: FDA BeSafeRx. Codes were read from RxNav on 2 November 2026 for ingredient RxCUI 2582.