One Fol 1 Tablet is composed of L-methylfolate calcium, which is the active form of folate (also known as vitamin B9). This form does not require conversion in the body, making it easier to absorb and use. In addition to the active ingredient, the tablet contains inactive components known as excipients, which help maintain its shape, stability, and absorption. This medication is commonly used in conditions related to folate deficiency or increased folate requirements.