DESC: Supplement FactsServing Size 1 CapsuleAmount Per CapsuleL-Proline 500 mg Other Ingredients: Vegetable Cellulose, Vegetable Magnesium Stearate, Water. May contain vegetable glycerin. If you are pregnant, nursing, taking any medication or have a medical condition, please consult your healthcare practitioner before taking any dietary supplement. Long chains of molecularly bonded individual amino acids form protein. The body must first break these molecular (pepetide) bonds for amino acid absorption to take place. Solgar's free form amino acids are already in their simplest form (no peptide bonds) and can be readily absorbed into the bloodstream. Solgar's L-Proline Vegetable Capsules are free of corn, yeast, wheat, soy and dairy products and are formulated without the use of preservatives, artificial flavors or colors.