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

One of the advantages of Soolantra (ivermectin 1% cream) is that it has a very low potential for drug interactions. Because the cream is applied topically and absorbs minimally into the bloodstream, it doesn't significantly interact with the same metabolic pathways as oral medications. However, there are still important things to discuss with your doctor.

Why Soolantra Has Low Drug Interaction Risk

Systemic drug interactions typically occur when two drugs compete for the same metabolic enzymes (especially cytochrome P450 enzymes in the liver) or when one drug alters the blood levels of another. In vitro studies have confirmed that Soolantra cream, at therapeutic concentrations, does not inhibit or induce CYP450 enzymes.

Additionally, the amount of ivermectin that enters the bloodstream from daily topical application is very small—plasma concentrations peak at about 2.10 ng/mL at steady state, well below levels associated with systemic effects. This dramatically limits the potential for meaningful drug-drug interactions.

Are There Any Known Drug Interactions with Soolantra?

No clinically significant drug interactions with Soolantra topical cream have been documented in the published literature or the FDA-approved prescribing information. This does not mean interactions are impossible—it means none have been identified in clinical studies.

The Soolantra prescribing information advises telling your doctor and pharmacist about all medications and supplements you are taking. This is standard guidance that applies to any medication.

What About Combining Soolantra with Other Rosacea Treatments?

Many dermatologists use Soolantra in combination with other rosacea treatments. Common combinations include:

Soolantra + brimonidine gel (Mirvaso): Soolantra addresses the bumps and pustules; brimonidine targets facial redness. These two topical agents can be applied separately (e.g., brimonidine in the morning, Soolantra at night).

Soolantra + oral doxycycline: For moderate-to-severe rosacea, some providers initiate both oral doxycycline and Soolantra simultaneously. As the oral agent controls acute inflammation, Soolantra maintains and extends improvement. There are no known pharmacokinetic interactions between topical ivermectin and doxycycline.

Soolantra + sunscreen and moisturizers: Soolantra can be used with cosmetics and skin care products. Apply Soolantra first, allow it to absorb fully, then apply sunscreen or moisturizer. Using SPF protection daily is especially important for rosacea patients, as sun exposure is a common trigger.

Potential Interaction: Alcohol and Skin Irritation

There are no known pharmacological interactions between Soolantra and alcohol. However, alcohol is a well-known trigger for rosacea flares. Drinking alcohol while using Soolantra won't affect how the medication works, but it may undermine the skin improvement you're trying to achieve by triggering flushing and inflammation.

Cautions with Pregnancy and Breastfeeding

Soolantra falls into a special category for pregnancy and breastfeeding—not because of drug interactions, but because of insufficient safety data. Available data on topical ivermectin in pregnant women is not sufficient to establish definitive risk. If you are pregnant, planning pregnancy, or breastfeeding, discuss this with your doctor before using Soolantra.

What to Tell Your Doctor Before Starting Soolantra

Even though Soolantra has low interaction potential, your doctor should know:

All prescription medications, including other topical treatments

Over-the-counter medications, vitamins, minerals, and herbal supplements

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

Any known allergies or prior reactions to topical medications or skin care products

Any history of allergic reactions to ivermectin or medications containing similar inactive ingredients (cetyl alcohol, methylparaben, etc.)

For more on side effects and safety, read: Soolantra Side Effects: What to Expect. If you're looking for Soolantra near you, medfinder.com checks pharmacies near you.