Test FAQ


Everyone's body reacts differnetly and results may vary. But typically results can be seen as early as 3 to 4 weeks. The best results are seen with consistent use over time. We typically suggest using Berberine for 3-6 months to see the best effects, paired with a healthy lifestyle.

Yes, don't worry, we have a 90 day return policy. If you are not happy for any reason, just let us know at help@lumanutrition.com

We will send you all the details to return the product for a refund.

Berberine is natural / herbal. It comes from the barberry plant. This is a plant extract, not a harsh medicine. Typically it is safe to take, with no side effects.

Of course, if you have specific medical concerns it is always best to talk to your doctor.

Yes, typically Berberine is safe to take with medications.

But you should always check with your doctor first if you have specific questions about a medicine you are taking.

Usually it is best to take Berberine before a meal, but you are free to take it at any time during the day.

The main thing to remember is to take it consistently each day, without skipping days.

We offer free shipping for orders over $65 in the USA.

Basic shipping is $4.95

International shipping price will be calculated automatically at checkout.

Delivery within the USA usually takes 3-5 days.

Holidays may cause delays.

International shipping can vary, but usually takes around 7 days.

Yes! All of our products are made in our facilities in the USA.

All our manufacturing facilities are fully certified, and we use only the highest quality ingredients.

Yes! All of our products are tested by a 3rd party laboratory for quality, purity, and correct dosage.