Wonderfeel FAQ

Get quick answers to our most frequently asked questions.

Browse Topics


How many milligrams of NMN are in each capsule and each bottle?

Each capsule: 450 mg of nicotinamide mononucleotide, 50 mg of resveratrol, along with other activating ingredients. Two, easy-to-swallow capsules deliver our recommended dose for optimal results.

Capsule size: 22mm x 8mm.

Each bottle: 60 capsules totaling 27,000 mg of NMN. And because we don’t like shipping air, we fill our bottles to the brim.

Discover the benefits and science behind the revolutionary synthesis we call Youngr™.

What are your vegan capsules made from?

Our capsule shells are made from vegetable cellulose and are 100% vegan.

Do I need to keep NMN in the refrigerator?

We recommend storing Youngr™ in a cool, dark and moisture-free area. 38° – 72° / 35-65% relative humidity. 

During warm seasons or in humid climates store your NMN in the refrigerator, ensuring the cap is fully closed for an airtight seal. 

Vegan Capsules have a more porous structure compared to those made of gelatin. While vegan capsules can be affected by the storage environment, they also lend to better bioavailability and absorption rates, thus dissolving more quickly in the stomach (usually 20 to 30 minutes).


What’s the recommended dose?

The recommended daily dosage is two capsules for a total of 900 mg NMN. Best if taken in the morning with a healthy fat source – think yogurt or avocado – to boost the bioavailability of the resveratrol.

See the dosing logic behind our 900 mg NMN Youngr™ formula.


NMN: Safe as it gets when it comes to supplements.

NMN has no known side effects. A human clinical toxicity study conducted at Keio University concluded that NMN can be safely administered and that it is effectively metabolized in the body. Subjects were taking 500 mg NMN per day.

Numerous studies have shown that the administration of even extremely high doses of NMN in mice revealed no toxicity or side effects. By and large, a high dose of any drug in mice will cause immediate side effects. It’s reassuring that this is not the case with NMN on mice.
Professor David Sinclair at Harvard Medical School, an expert in NMN and NAD science, states that “human studies with NAD boosters are ongoing and so far, there has been no toxicity, not even a hint of it.” 

However, we look forward to deeper research in this area.

Where are your products made?

Our products are made in the USA at cGMP-certified facilities that comply with strict FDA regulations and are crafted with the purest and highest quality ingredients which are tested at every turn.

Do you have third party certificates of analysis? (COA)

Always committed to transparency, we provide trackable, 3rd party lab results for all of our products. Please email us at team@getwonderfeel.com for a copy.

Account & Subscriptions

How do I place a hold on my subscription?

You can place a hold on your subscription or adjust your delivery schedule by contacting us at team@getwonderfeel.com. Please specify the new schedule or date that you want your subscription to resume.

How do I cancel my subscription?

To cancel your monthly subscription, please email us at team@getwonderfeel.com. Keep in mind, that if you give notice after your order has been shipped, we will not be able to cancel that order.

Forgot Password / Can’t Log In

If you try to log in and see “Authentication Failed” this means that you’ve either entered an incorrect password or your account does not yet exist. From the login page, select “Forgot Password” and enter your email. An automatic email will be sent containing your new password.

If no email is received, it might be in your spam folder. Spam filters are great, but they can occasionally file important emails out of sight. Check your bulk, spam, or junk folders and mark the email as “Not Spam” or “Not Junk.” Also, consider adding @getwonderfeel.com to your “approved sender” or “whitelist”, and/or to your “address book” to cover all the bases.

Orders, Shipping & Returns

What is your return policy?

Refunds are available for unopened products with the original seal that is purchased on our online store within thirty (30) days of delivery.

We can not issue refunds for products that appear to be partially used, opened, or tampered with. Please email us at team@getwonderfeel.com to start your refund process.

Products purchased through an authorized Wonderfeel retailer will not be refunded by us directly; in such case, any refunds must be obtained from the authorized retailer from whom you purchased the product and will be subject to the retailer’s policy on refunds.

All international sales are final.

You can read about how to make a return and more about our policy here.

I entered the wrong shipping address / made a typo, can I change it?

Yes, as long as the error is fixed before your order is shipped we can make the adjustment for you. Please contact us immediately via text or by calling (646) 801-7606. You can also email team@getwonderfeel.com.

Do you charge state sales tax?

Yes. Where sales tax is applicable, it will be calculated based on the shipping address (not billing address.)

Do you ship internationally?

We currently ship to Canada, and to the UK very soon. There is a $20 surcharge for order shipping to Canada.

Everything Else

NMN vs NR as NAD precursors

NMN is an intermediate compound between NR and NAD, meaning NR converts to NMN, at which point NMN triggers NAD production. By taking NMN directly, you eliminate the step of having your body convert NR to NMN. More on this subject.

Do you offer an affiliate program?

Yes, we do have an affiliate program. Please email us at team@getwonderfeel.com for details.

Discover the latest science and get subscriber only benefits.