Same-day shipping is typically available for orders placed before 1:00 p.m. (EST) Monday through Friday. Orders placed after 1:00 p.m. (EST) Monday through Friday will typically be shipped the next business day. Orders placed on weekends or holidays will typically be shipped the next business day.


The standard shipping fee is $5.95 and will increase with each product added. Delivery options will be determined by your shipping zip code and delivery times are calculated during checkout. 


We will gladly accept returns within 30 days on unopened products for a full refund of the purchase price, excluding the shipping costs. Unfortunately, if a product is already opened, we cannot accept its return.


We may retain the following submitted information: name, contact information including email address, demographic information such as postcode, preferences and interests and other information relevant to customer surveys and/or offers.

What we do with the information we gather: We use this information to understand your needs and provide you with better service.  We may periodically send promotional emails about new products, special offers or other information which we think you may find interesting using the email address which you have provided.

Security: We are committed to ensuring that your information is secure. In order to prevent unauthorised access or disclosure, we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect online.


We accept payments with all major credit cards and debit cards. Your payment will be securely processed and you will receive an email confirmation for your order. If you have any questions about payment, please don't hesitate to contact us.

Frequently asked questions

Where are your products manufactured?

Zahlers products are manufactured exclusively in the USA in state of the art, third party cGMP certified facilities, which meet our high quality standards and comply with all safety regulations.

Are your products substantiated by scientific studies or research and is this part of your product development process?

Yes! Each time we set out to create a new formula, the process begins with an extensive review of the available clinical research. It takes painstaking meticulous research and a solid understanding of the human body to create an effective formula. The payoff, of course, is the result. Chapter One supplements use clinically proven ingredients and doses of these ingredients that are substantiated by either clinical studies or long traditions in botanical medicine. Our Formulas are the product of hard data, typically published in peer reviewed journals and an impressive compendium of real world evidence.

Can I insert a video in my FAQ?

Yes! Users can add video from YouTube or Vimeo with ease:

  1. Enter App Settings
  2. Click the "Manage Questions" button
  3. Click on the question you would like to attach a video to
  4. When editing your answer, click on the video icon and then paste the YouTube or Vimeo video URL
  5. That's it! A thumbnail of your video will appear in answer text box

How do I edit or remove the "FAQ title"?

The FAQ title can be adjusted in the settings tab of the App Settings. You can also remove the title by unchecking its checkbox in the settings tab.