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Side Effects


Adverse Reactions in Clinical Trials

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug, and may not reflect the rates observed in practice. The adverse reaction information from clinical trials does, however, provide a basis for identifying the adverse reactions that appear to be related to drug use and for approximating rates. The safety data presented in Table 1 (below) reflect exposure to Extina (ketoconazole foam, 2%) Foam in 672 subjects, 12 years and older with seborrheic dermatitis. Subjects applied Extina (ketoconazole foam, 2%) Foam or vehicle foam twice daily for 4 weeks to affected areas on the face, scalp, and/or chest. Adverse reactions occurring in > 1% of subjects are presented in Table 1.

Table 1: Adverse Reactions Reported by > 1% Subjects in Clinical Trials

Adverse Reactions Extina (ketoconazole foam, 2%) Foam
N = 672
n (%)
Vehicle Foam
N = 497
n (%)
Subjects with an Adverse Reaction 188 (28%) 122 (25%)
Application site burning 67 (10%) 49 (10%)
Application site reaction 41 (6%) 24 (5%)

Application site reactions that were reported in ≤ 1% of subjects were dryness, erythema, irritation, paresthesia, pruritus, rash and warmth.

Dermal Safety Studies

In a photoallergenicity study, 9 of 53 subjects (17%) had reactions during the challenge period at both the irradiated and non-irradiated sites treated with Extina (ketoconazole foam, 2%) Foam. Extina (ketoconazole foam, 2%) Foam may cause contact sensitization.

Read the Extina (ketoconazole foam, 2%) Side Effects Center for a complete guide to possible side effects


No information provided.

Read the Extina Drug Interactions Center for a complete guide to possible interactions

Last reviewed on RxList: 7/9/2007
This monograph has been modified to include the generic and brand name in many instances.

Side Effects

Extina - User Reviews

Extina User Reviews

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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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