Why I Stopped Taking NMN: Side Effects & Results

May 28, 2025

NMN (Nicotinamide Mononucleotide) has become a popular supplement among those seeking anti-ageing benefits, improved energy, and better overall health. For some, it’s a game-changer, while for others, it’s not all it’s cracked up to be. In this article, I’ll share my personal experience and the reasons why I decided to stop taking NMN, along with the side effects, lack of results, and alternatives that may work better.

If you’re considering NMN for your health journey, you’ll want to know the pros and cons before making a decision. Here’s everything you need to know.

What is NMN and How Does It Work?

NMN is a precursor to NAD+ (Nicotinamide Adenine Dinucleotide), a coenzyme found in every living cell. NAD+ plays a vital role in many cellular functions, including energy metabolism, DNA repair, and maintaining healthy ageing. As we age, NAD+ levels naturally decline, which is where NMN comes in. It is believed that supplementing with NMN can help boost NAD+ levels, leading to better energy, improved cellular repair, and even anti-ageing effects.

Who Uses NMN?

NMN is primarily taken by individuals seeking to combat the natural signs of ageing or those interested in biohacking. It has gained popularity among health enthusiasts, fitness experts, and longevity advocates for its potential to slow ageing, improve vitality, and boost energy.

My Journey with NMN: The Hope and the Reality

When I first heard about NMN, I was intrigued by its potential. The claims of increased energy, improved metabolism, and anti-ageing effects sounded promising. I started taking NMN with high hopes, expecting to see significant improvements in my daily energy levels and long-term health benefits.

For the first few weeks, I noticed some subtle positive changes. I felt a slight energy boost, especially during the afternoons when I usually experience a slump. My skin seemed brighter, and I felt more alert overall.

But after a few months, things started to change. My initial excitement started to fade, and I began questioning whether the benefits were worth the side effects and the cost.

Side Effects, Lack of Results, and Financial Concerns

1. Side Effects: Not All Sunshine and Rainbows

While NMN is generally considered safe for most people, I did experience a few side effects that I didn’t expect. Here are some of the most noticeable ones:

  • Insomnia: One of the first things I noticed was difficulty sleeping. Despite taking NMN earlier in the day, I found myself restless at night. This wasn’t a problem I had before starting the supplement.
  • Digestive Issues: On several occasions, I experienced mild digestive discomfort, including bloating and indigestion. These were not symptoms I typically dealt with prior to taking NMN.
  • Headaches: I also suffered from frequent headaches during the initial weeks of taking NMN, which was unusual for me.

While these side effects were not severe, they were enough to make me rethink my decision to continue the supplement.

2. Lack of Results: No Major Anti-Aging Effects

As I continued taking NMN, the promised anti-ageing benefits didn’t materialize in the way I had hoped. While I did notice slight increases in energy early on, the anti-ageing effects were negligible. My skin didn’t look dramatically different, and I didn’t experience the rejuvenation that some studies and testimonials promised.

After several months of use, I concluded that the benefits I was seeing weren’t worth the price and inconvenience of dealing with side effects. It became clear that NMN wasn’t the magic pill I had hoped it would be.

3. Cost vs. Benefit: Is NMN Worth the Price?

Another factor that influenced my decision to stop taking NMN was the cost. NMN supplements can be quite expensive, especially if you plan on taking them long-term. While some people may see significant benefits from long-term use, the combination of side effects and minimal results didn’t justify the expense.

Alternatives to NMN for Anti-Aging and Longevity

Suppose you’re still interested in boosting your anti-ageing efforts. In that case, several alternatives to NMN may offer similar benefits without the side effects.

1. Resveratrol

Resveratrol, a type of polyphenol, is naturally present in foods like red wine, grapes, and various berries. It has been shown to have powerful antioxidant properties and is known for its potential anti-ageing effects. Many people take resveratrol for its ability to combat oxidative stress and protect against cellular damage.

2. Fisetin

Fisetin is a flavonoid found in fruits like strawberries and apples. Recent studies suggest it has anti-inflammatory and anti-ageing properties. Fisetin is thought to help reduce cellular senescence, which is a major factor in the ageing process.

3. NAD+ Boosters

Instead of NMN, consider NAD+ boosters like Pterostilbene or Quercetin. These supplements help increase NAD+ levels in a similar way to NMN but without the potential side effects.

4. Healthy Lifestyle Choices

Ultimately, the most effective anti-ageing strategy combines healthy eating, regular exercise, and stress management. These lifestyle factors have been proven to slow the ageing process more effectively than any supplement.

Conclusion: Should You Stop Taking NMN?

Suppose you’re considering NMN as part of your anti-aging routine. In that case, it’s important to weigh the potential benefits against the side effects and costs. While NMN may work wonders for some people, it didn’t provide the significant results I was hoping for. If you’re facing similar issues, you should reconsider or explore other supplementation options.

As always, before making any changes to your supplement regimen, I recommend consulting with a healthcare professional. Supplements can affect people in different ways, and what proves effective for one individual may not have the same results for someone else.

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