"Better energy, better sleep, no more nanny naps. I feel like a different person in my 40s."
Built by Dr. Jan Gruber and Dr. Vincenzo Sorrentino, two university professors who take their own product daily. Made with the world's first clinically proven NMN, at a purity most brands can't match.
⭐️⭐️⭐️⭐️⭐️ 4,88/5 1077+ Reviews
90-Day Money Back Guaranteed
Real People With Real Feedback:
Find out how a 5-second addition to your breakfast can boost your energy, make you sleep better, and make your brain think sharper.
⭐️⭐️⭐️⭐️⭐️
Haper M
Verified buyer
- "October 21" "I have only just begun taking these supplements. After reading the reviews and seeing that they were third-party tested, I decided to switch from my previous brand to ForYouth. So far, I am pleased with my choice. I'll need to take them a bit longer before I can give a fair review. but I appreciate that I only need one pill a day."
- "January 13" "I wanted to come back and say The Repair was really as good as the reviews said. Not going back."
⭐️⭐️⭐️⭐️⭐️
Matilda W
Verified buyer
"But it does happen! The Repair is a slow burn but once it kicks in you know it. you feel it with more energy at the back end of the day, and mood is better, calmer. you notice your nails growing, not splitting. skin glows a little more. i subscribe now and I have never committed to any other product online before. it doesn't replace other supplements like magnesium or vitamins, it just is part of a my daily routine now."
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The Secret What’s Happening In Your Body Causing That Bone-Deep Fatigue 40s and 50s
NAD+ is your cells' energy currency – it controls how your mitochondria produce energy, how your body repairs DNA, and how your brain maintains focus. But most supplements ignore what's actually accelerating its decline.
As you age, an enzyme called CD38 rises sharply, actively breaking down NAD+ faster than your body can replace it. It's a double hit: production drops while destruction ramps up. If a formula doesn't block CD38 first, any NAD+ you add gets consumed before your cells can use it, which is why most NMN supplements produce inconsistent results.
What to Expect Over 12 Weeks.
Experience real, noticeable chang. backed by science and felt in your body.
IN JUST 1-2 WEEKS
A natural boost in daily energy.
Sharper mental clarity with less brain fog.
IN 4-6 WEEKS:
Improvements in weight management.
Increased stamina and quicker recovery after activity.
AFTER 10-12 WEEKS
Improved sleep quality and mood balance.
Skin appears brighter and more resilient.
⭐️⭐️⭐️⭐️⭐️ Rated 4.88/5 from 1066 Reviews
Blocks the enzyme that's destroying your NAD+ – the step every other NMN skips.
38% increase in cellular energy levels in 60 days. Clinically proven.
Three mechanisms, one capsule. No stacking. No guesswork.
99.9% pure, triple-tested, made in France, with published lab certificates.
Feel the difference or get your money back.
One-time purchase
$65.00
$2,17 per day
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$65.00
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$1,95 per day
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*Each pack lasts one month. Real results build over 3+ months.
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Ingredients
The Repair is formulated by Dr Jan Gruber and Dr Vincenzo Sorrentino, professors at the National University of Singapore (NUS). The Repair is made in France.
Serving Size: 1 capsule
Servings Per Pack: 30 (1 month supply)
Active Ingredients:
Uthever®️ Nicotinamide Mononucleotide (NMN), 450mg
ApiAge®️ Apigenin, 50mg
Trans-Pterostilbene, 50mg
Origin: Made in France
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Shipping
Experience fast shipping to many countries worldwide.
🇦🇺 Australia
Cost: Free for orders over $100 AUD, or $10 AUD for smaller orders
Delivery time: 2-3 business days
Note: allow for 1–3 days for regional or remote areas
🇸🇬 Singapore
Free shipping on all orders
Delivery time: 1-2 business days
🇲🇾 Malaysia
Free shipping on all orders
Delivery time: 3-4 business days
Note: allow for 1–4 days for East Malaysia
🇺🇸 United States
Cost: Free for orders over $75 USD, or $10 USD for smaller orders
Delivery time: 3-4 business days
🇨🇦 Canada
Cost: Free for orders over $100 -- CAD, or $15 CAD for smaller orders
Delivery time: 3-4 business days
🇭🇰 Hong Kong SAR
Cost: Free for orders over $600 HKD, or $60 HKD for smaller orders
Delivery time: 1-2 business days
🇦🇪 United Arab Emrirates
Cost: Free for orders over 300 AED, or 30 AED for smaller orders
Delivery time: 2-3 business days
Or for rest of the world:
What is your 90 day happiness guarantee?
Our 90-day happiness guarantee means we stand behind our products 100%. If you’re not completely satisfied with your results after using For Youth supplements for 90 days, we’ve got your back. Just reach out to us, and we’ll offer a full refund—no hard feelings. We believe in the power of our products, and we want you to feel confident in your purchase. Your health, happiness, and satisfaction are our top priorities.
Frequently asked questions
How does The Repair work?
The Repair is a supplement that helps your cells stay healthy and repair damage by boosting and maintaining NAD⁺ levels. It combines three ingredients: Uthever® NMN to raise NAD⁺ levels in your body, ApiAge® Apigenin to stop NAD⁺ from being used up too quickly, and Pterostilbene — a highly bioavailable polyphenol that amplifies the effectiveness of NAD⁺ while adding powerful antioxidant support. Together, they sustain your energy, focus, skin, and overall well-being.
What daily dosage do you recommend?
We recommend to take one capsule of The Repair per day. One capsule of The Repair contains 450 mg of NMN. This is the maximum daily dose that is allowed for this vitamin B3-variant by the Health Sciences Authority (HSA) in Singapore.
However, research has shown that NMN is safe and well tolerated at least up to 900 mg per day, as shown in a recent paper by Yi, Maier, et al. (2023).
Is The Repair safe? Any side effects?
Yes, NMN (Nicotinamide Mononucleotide), a vitamin B3 variant, is generally considered safe for human consumption based on several human trials. NMN is generally free from side effects when used as directed. Rarely, some individuals may experience mild digestive discomfort. If you have any concerns, discontinue use and consult a healthcare provider.
Here are some key studies that support the safety of NMN:
A 2019 study by Irie, J., et al., published in the Endocrine Journal, assessed the safety of NMN in healthy Japanese men. The researchers administered various doses (100 mg, 250 mg, 500 mg) of NMN and found it to be safe and well-tolerated, with no significant adverse effects observed.
A 2023 study by Yi, Maier, et al., evaluated the safety and bioavailability of NMN in healthy adults. It found that NMN was safe and well-tolerated at doses up to 900 mg, with no significant adverse effects.
Apigenin is a natural flavonoid found in various fruits, vegetables, and herbs (especially parsley), commonly consumed in a normal diet. Apigenin is considered safe, even at high doses, and no toxicity has been reported.
See this link to the research paper →
Pterostilbene is a naturally occurring polyphenol found in blueberries, grapes, and other plants, closely related to resveratrol. It is generally considered safe when consumed in foods or as a supplement within recommended doses. Studies suggest it is well tolerated, with no significant toxicity reported in humans. Rare side effects may include mild gastrointestinal discomfort or, at very high supplemental intakes, slight changes in cholesterol or liver enzyme levels.
What is the best time of day to take The Repair?
Take The Repair in the morning, ideally with a small meal. After waking, your NAD⁺ levels naturally rise; taking NMN then gives that process an extra boost. A little dietary fat also helps the polyphenols apigenin and pterostilbene absorb better.
Fasting? That’s fine too. You can take The Repair on an empty stomach — NMN absorbs well — though uptake of the fat-soluble polyphenols apigenin and pterostilbene may be slightly reduced.
Scientist's Tips
“After years of researching NAD⁺ and cellular metabolism, this is the product I always wanted to make. Take it in the morning—that’s when your cells are most ready to convert it into energy.”
— Dr Vincenzo Sorrentino, NUS Professor & For Youth Scientific Advisor
Trusted by 10,000s of customers.
Meet Our Scientists
Dr. Jan Gruber, PhD, is a biochemist and Associate Professor at the National University of Singapore (NUS), specialising in ageing biology, mitochondrial function, and oxidative stress.
His research explores the molecular mechanisms of longevity and has been published in leading journals. He completed his PhD in Biochemistry at the University of Oxford and also studied physics and mathematics at the University of Cambridge.
His work often uses simple organisms such as tiny worms (C. elegans) to understand how ageing happens at the cellular level, and to test new ways to slow it down.
Frequently Asked Questions
How does The Repair work?
The Repair is a supplement that helps your cells stay healthy and repair damage by boosting and maintaining NAD⁺ levels. It combines three ingredients: Uthever® NMN to raise NAD⁺ levels in your body, ApiAge® Apigenin to stop NAD⁺ from being used up too quickly, and Pterostilbene — a highly bioavailable polyphenol that amplifies the effectiveness of NAD⁺ while adding powerful antioxidant support. Together, they sustain your energy, focus, skin, and overall well-being.
What daily dosage do you recommend?
We recommend to take one capsule of The Repair per day. One capsule of The Repair contains 450 mg of NMN. This is the maximum daily dose that is allowed for this vitamin B3-variant by the Health Sciences Authority (HSA) in Singapore.
However, research has shown that NMN is safe and well tolerated at least up to 900 mg per day, as shown in a recent paper by Yi, Maier, et al. (2023).
Is The Repair safe? Any side effects?
Yes, NMN (Nicotinamide Mononucleotide), a vitamin B3 variant, is generally considered safe for human consumption based on several human trials. NMN is generally free from side effects when used as directed. Rarely, some individuals may experience mild digestive discomfort. If you have any concerns, discontinue use and consult a healthcare provider.
Here are some key studies that support the safety of NMN:
A 2019 study by Irie, J., et al., published in the Endocrine Journal, assessed the safety of NMN in healthy Japanese men. The researchers administered various doses (100 mg, 250 mg, 500 mg) of NMN and found it to be safe and well-tolerated, with no significant adverse effects observed.
A 2023 study by Yi, Maier, et al., evaluated the safety and bioavailability of NMN in healthy adults. It found that NMN was safe and well-tolerated at doses up to 900 mg, with no significant adverse effects.
Apigenin is a natural flavonoid found in various fruits, vegetables, and herbs (especially parsley), commonly consumed in a normal diet. Apigenin is considered safe, even at high doses, and no toxicity has been reported.
See this link to the research paper →
Pterostilbene is a naturally occurring polyphenol found in blueberries, grapes, and other plants, closely related to resveratrol. It is generally considered safe when consumed in foods or as a supplement within recommended doses. Studies suggest it is well tolerated, with no significant toxicity reported in humans. Rare side effects may include mild gastrointestinal discomfort or, at very high supplemental intakes, slight changes in cholesterol or liver enzyme levels.
What is the best time of day to take The Repair?
Take The Repair in the morning, ideally with a small meal. After waking, your NAD⁺ levels naturally rise; taking NMN then gives that process an extra boost. A little dietary fat also helps the polyphenols apigenin and pterostilbene absorb better.
Fasting? That’s fine too. You can take The Repair on an empty stomach — NMN absorbs well — though uptake of the fat-soluble polyphenols apigenin and pterostilbene may be slightly reduced.