The sweetener stevia is supposedly healthy. That being said, I have some stevia drops in my refrigerator that are flavored. Is my assumption correct that if this flavoring is artificial, that the health benefits decrease?

Note: The drops I am using as my example are hazelnut flavored and I do not know whether or not they are artificially flavored.

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About Stevia : I don't know for sure what this product is so I will assume it is just Stevia rebaudiana extract. There has been a huge controversy over the safety of the product, but serious studies (WHO - Safety Evaluation of Certain Food Additives: Steviol Glycosides) tend to prove there's no significant effect on health (not a mutagen) in "consumption" doses.

The Committee concluded that stevioside and rebaudioside A are not genotoxic in vitro or in vivo and that the genotoxicity of steviol and some of its oxidative derivatives in vitro is not expressed in vivo. The no-observed-effect level (NOEL) for stevioside was 970mg/kgbw per day in a long-term study evaluated by the Committee

It should also be noted that it is not an "inert" compound has apparently some effects on humans. Please ask a doctor if you think you might be affected by the Stevia extract you use.

The Committee noted that stevioside has shown some evidence of pharmacological effects in patients with hypertension or with type-2 diabetes [..]. The evidence available at present was inadequate to assess whether these pharmacological effects would also occur at lower levels of dietary exposure, which could lead to adverse effects in some individuals (e.g. those with hypotension or diabetes).

All depends of the flavor. Hazelnut flavor is most likely to be filbertone but it could also be a mix of different other chemicals I'm not aware of. Filbertone is naturally present in hazelnut.

I am not aware of any study claiming that filbertone is harmful but also none that claimed it was totally safe. Normally it should be present in very small quantity.

Normally your stevia drops should contain information about its composition. Ask a someone competent if you want detailed information. It can be a doctor, a chemist or a pharmacist.

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    This has potential to be a good answer but it's completely lacking sources. For example, if you know of studies showing it's safe, cite one of them. And who says filbertone is safe? Cite that too.
    – Carey Gregory
    Commented Jan 19, 2017 at 2:09

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