Clindesse Drug Interactions: What to Avoid and What to Tell Your Doctor

Because Clindesse is administered as a single intravaginal dose, its systemic absorption is minimal — only about 5% of the dose reaches the bloodstream. This means Clindesse has significantly fewer drug interactions compared to oral or intravenous clindamycin. However, there are still important interactions and precautions patients need to know before using it.

The Most Important Interaction: Latex Condoms and Diaphragms

This is the interaction most patients are not warned about — and it matters a great deal for contraception and STI prevention.

Clindesse's cream base contains mineral oil, which weakens latex and rubber.

What this means in practice:

Do not use latex condoms or vaginal contraceptive diaphragms for at least 5 days after using Clindesse

Do not rely on polyurethane condoms for at least 7 days after treatment — they may also be less reliable

During this period, condoms may not reliably prevent pregnancy or sexually transmitted infections including HIV

If contraception is a concern, discuss alternative methods (such as oral contraceptives or abstinence during this period) with your healthcare provider.

Systemic Drug Interactions (Relevant for Absorbed Clindamycin)

While systemic absorption from Clindesse is minimal, the following interactions are relevant to the small amount that is absorbed — or to patients who may also be taking systemic clindamycin:

Neuromuscular Blocking Agents

Clindamycin (primarily via systemic routes — IV/oral) has neuromuscular blocking properties that can enhance the action of other neuromuscular blocking agents (such as succinylcholine, rocuronium, or vecuronium). This interaction is most relevant in surgical patients receiving general anesthesia.

While the risk with intravaginal Clindesse is low due to minimal systemic absorption, inform your anesthesiologist or surgical team if you have recently used Clindesse before an upcoming surgery.

Alcohol (No Interaction with Clindesse)

Unlike metronidazole — the other main BV treatment — clindamycin does not cause a disulfiram-like reaction with alcohol. You do not need to avoid alcohol while using Clindesse. This is a meaningful advantage for some patients who may have been advised to avoid alcohol during metronidazole treatment.

Erythromycin / Macrolide Antibiotics

Clindamycin and macrolide antibiotics (such as erythromycin, azithromycin, clarithromycin) share overlapping binding sites on the bacterial ribosome. Combination use may produce antagonism — each drug competing with the other, reducing the effectiveness of both. While this is primarily relevant for systemic antibiotic use, discuss any concurrent antibiotic therapies with your doctor.

Cross-Resistance with Other Antibiotics

Bacteria that are resistant to one lincosamide (like clindamycin) may also be cross-resistant to other lincosamides (like lincomycin) and to some macrolides and streptogramins. This is important context for your prescriber when choosing among antibiotic options if Clindesse treatment fails.

Contraindications (Medical Conditions That Rule Out Clindesse)

The following are not technically drug interactions but are absolute contraindications — conditions that mean you should not use Clindesse at all:

Allergy to clindamycin or other lincosamides (lincomycin): Previous allergic reactions to clindamycin in any form rule out Clindesse. Even rash, urticaria, or mild reactions should be reported to your provider.

History of C. difficile-associated diarrhea: Clindamycin is one of the most well-known antibiotic triggers for C. diff. Patients with a history of CDAD should not use Clindesse.

Regional enteritis or ulcerative colitis: These inflammatory bowel conditions increase the risk of serious GI complications if clindamycin triggers C. diff or intestinal inflammation. Clindesse is contraindicated.

Pregnancy: Clindesse should be avoided in pregnancy (insufficient safety data for this formulation).

What to Tell Your Doctor Before Using Clindesse

When your provider prescribes Clindesse, make sure to disclose:

Any previous allergic reactions to clindamycin, lincomycin, or any antibiotic

History of C. difficile colitis, inflammatory bowel disease, or chronic GI problems

Whether you are pregnant, trying to get pregnant, or breastfeeding

Any upcoming surgeries requiring anesthesia (inform your surgical team as well)

Any other antibiotics you are currently taking

What type of contraception you use — particularly if you rely on latex condoms or diaphragms

See also: Clindesse Side Effects: What to Expect and When to Call Your Doctor for a full review of side effects and warning signs.

Need to find Clindesse in stock near you? medfinder calls pharmacies on your behalf and texts you the results.