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Dr Basu
Dr Basu, Experienced Specialist
Category: Health
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Experience:  MD
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How stable are Vitamin D3 and L-Theanine (Suntheanine) in solution?

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How stable are Vitamin D3 and L-Theanine (Suntheanine) in solution? I was thinking of dissolving them in fruit juice. I wondered how long I could keep it ? How quickly will they decompose.
Thank you, Martin
The views expressed by me are for educational purposes only and do not establish a doctor patient relationship.

Thanks for your question.
L theanine and vitamin D3 can be mixed in the fruit juice without any problem.
They are stable and can be taken within 15 to 30 minutes.
There is no data on the decomposing part.

Best wishes
Customer: replied 3 years ago.

If they are stable, why the " 15 to 30 minutes " ? Would it be possible to make a jug-ful and keep it in the fridge for a few days?


15 to 30 minutes is the usual time frame for any dissolved medication without any loss of strength.
Now, since there is no report about decomposition, It should not matter if you refrigerate the solution in fridge for few days just like any vitamin D fortified juice.

Best wishes,
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