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Digestive problems: Some users report nausea or bloating, often related to taking on an empty stomach

Shortness of breath or dizziness

You should always tell your provider about: Current medications and supplements Known allergies Pre-existing medical conditions When to contact your provider: If you experience a persistent headache, severe muscle weakness, or a rash that lasts longer than 24 hours, please call your provider

Crovesy, L., Ostrowski, M., Ferreira, D

While research agrees that every human needs it, the different forms and how the body puts it to use means that its not always simple to make sure you are getting what you need