A: If you're looking to return a supplement, you're in luck. We offer a 30-day return policy, which means from the day you receive your item, you have 30 days to initiate a return. Remember, the supplement must be unopened, and you'll need to provide the original order receipt or proof of purchase from our company.

To begin the return process, simply contact us at products@markstengler.com.

Once your return is approved, we'll give you all the necessary instructions on how and where to send your package. Please note, items returned without prior approval will not be accepted.

A: Our shipping costs are calculated based on the destination and weight of your order, ensuring you only pay for the actual cost of shipping your items. We dispatch all orders within 1 working day, demonstrating our commitment to getting your purchase to you as quickly as possible.

For those in need of their items sooner, we offer express delivery options—just choose express shipping at checkout.

Plus, we’re excited to offer free standard shipping for orders over $150 within the USA, making it easier for you to get more of what you love.

If you have any questions about shipping, don't hesitate to contact us.