Store your Men’s Finasteride Hair Loss Formula closed in its original container at room temperature in a dry environment. Store Strut Men’s Finasteride Hair Loss Formula safely away from pets and children. Finasteride is in Strut Men’s Finasteride Hair Loss Formula and is a category X medication, meaning that it can cause birth defects. For this reason, women who are currently or may be pregnant should not handle Strut Men’s Finasteride Hair Loss Formula.