Equate Fiber Therapy Methylcellulose Caplets, 500 mg, 100 Count Alleviate the pain, discomfort, and frustration caused by bowel movement irregularity with Equate Fiber Therapy Methylcellulose Caplets. Comparable to other more expensive options, these reliable pills are packed with 100 percent soluble fiber to create controlled, comfortable regularity. They work to effectively treat constipation in adults and children who are 6 years old or older. Gluten-free. Generally effective in 12-72 hours Ingredients: Active: Methyl Cellulose 500 Mg ... Bulk-Forming Laxative. Inactive: Colloidal Silicon Dioxide, Crospovidone, Fd C Yellow No. 6 Aluminum Lake, Magnesium Stearate, Microcrystalline Cellulose, Sodium Lauryl Sulfate. Inactive Ingredients: Adipic Acid, Calcium Carbonate, Crospovidone, FD C Yellow No. 6 Aluminum Lake, Magnesium Stearate, Microcrystalline Cellulose, Polysorbate 80, Silica.