If researchers determine different metabolite levels are better, or examine a different metabolite to adjust the dose, there is no infringement.

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Trials in more patients, as well as studies looking at the best dose and if different forms of vitamin D are better, will be needed before the vitamin could be used by doctors.

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If that is true, then certain drugs designed to affect the immune system might be more effective if delivered as small doses at different times, rather than as a single, continuous dose.

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Different people require different doses of warfarin, and the same person can require a change in dose if his or her diet changes.

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