are true to their name. The vitamin is released soon after the tablet is ingested, and it works quickly over a short period of time. With this type of vitamin, you sometimes have to take multiple doses to ensure a constant supply. You may also experience drops in the content of the vitamin in your body between doses (but we’ve already thought about that with the supplements where that matters, so if you see immediate release products here, it’s okay!)
This form of release is a valid and necessary form for many types of supplements and medication. While it is not the most effective for long-term absorption, not every vitamin or supplement needs to be long-term or slow-release. This is something that is specific to the purpose and chemical makeup of each supplement.