Brief Answer:
it depends...please see the detailed answer below...

Detailed Answer:
Hello there,
Welcome to 'Ask A Doctor' service...
I've gone through your query in details...
I can understand your concerns...

Well, glucose or sugar syrups/powders or even sugar cubes, are not going to cause any adverse effects at all unless they're strictly contraindicated (means if you're diabetic or somehow allergic /intolerant to any one of them).

The same goes while using it with coffee too (you can have them unless specifically instructed not to due to any specific medical conditions)...

Hope this answers your query...

Let me know if I can assist you further.

Take Care
Kind Regards

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