1 INDICATIONS AND USAGE Clindamycin Phosphate Foam, 1% is indicated for topical application in the treatment of acne vulgaris in patients 12 years and older.

Clindamycin Phosphate Foam, 1% is a lincosamide product indicated for acne vulgaris in patients 12 years and older.

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6 ADVERSE REACTIONS The most common adverse reactions (>1%) are headache and application site reactions including burning, pruritus, and dryness.

( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Perrigo at 1-866-634-9120 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .

6.1 Clinical Trials Experience 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 clinical practice.

A total of 439 subjects with mild to moderate acne vulgaris were treated once daily for 12 weeks with clindamycin phosphate foam, 1%.

The incidence of adverse reactions occurring in > 1% of the subjects in clinical trials comparing clindamycin phosphate foam, 1% and its vehicle is presented in Table 1.

Table 1: Adverse Reactions Occurring in ≥ 1% of Subjects Adverse Reactions Number (%) of Subjects Clindamycin Phosphate Foam, 1% N = 439 Vehicle Foam N = 154 Headache 12 (3%) 1 (1%) Application site burning 27 (6%) 14 (9%) Application site pruritus 5 (1%) 5 (3%) Application site dryness 4 (1%) 5 (3%) Application site reaction, not otherwise specified 3 (1%) 4 (3%) In a contact sensitization study, none of the 203 subjects developed evidence of allergic contact sensitization to clindamycin phosphate foam, 1%.

6.2 Postmarketing Experience The following adverse reactions have been identified during post approval use of clindamycin phosphate foam, 1%: application site pain, application site erythema, diarrhea, urticaria, abdominal pain, hypersensitivity, rash, abdominal discomfort, nausea, seborrhea, application site rash, dizziness, pain of skin, colitis (including pseudomembranous colitis), and hemorrhagic diarrhea.

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

Abdominal pain and gastrointestinal disturbances, as well as gram-negative folliculitis, have also been reported in association with the use of topical formulations of clindamycin.

Orally and parenterally administered clindamycin have been associated with severe colitis, which may end fatally.