If you’re taking Pendulum Glucose Control as a part of your type 2 diabetes management plan, your A1C levels are the best indicator of results. It takes about 3 months (90 days) to see a change in A1C levels. If you don’t experience a drop in your A1C levels during your 90-day trial, we’ll issue you a full refund. You can request a refund by using the contact us form on our website.