Niacin

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A doctor examines her patient's vitamin B3 test results.

Vitamin B3 Test: Measuring Niacin Metabolites and Ranges

At-Home Testing, Biomarkers, NAD, Niacin

Inside This GuideWhat Does a Vitamin B3 Test Measure?Normal Vitamin B3 Reference RangesWhen Should You Get Tested?Why Blood Tests Can Mislead YouThe NAD+ Connection: Why Testing…

Niacin Dosage Guide: Optimal Amounts, Timing and Safety

Niacin, NAD

Niacin, also known as vitamin B3 or nicotinic acid, supports energy metabolism and cellular health. While this important vitamin offers valuable benefits, getting the dosage right…

A cross-sectional view of a red blood vessel shows arterial blockage with yellow plaque buildup and dark clots inside.

Niacin for Cholesterol: More Harm Than Good?

Niacin, Cardiovascular Diseases, Lipid Metabolism, Supplements

For decades, niacin (vitamin B3) held a prestigious position as one of the first treatments for high cholesterol. Doctors prescribed it confidently, knowing that niacin may help…

Pink and white capsules spill from a dark circular container onto a matching pink surface.

Can Niacin Help You Lose Weight?

Niacin, NAD+, Obesity and Weight Gain, Supplements

Niacin produces minimal weight loss of 1-2 pounds after months of supplementation but increases diabetes risk by 34% and causes liver toxicity. Research shows niacin…

Close-up of a woman’s face showing redness on the cheeks and nose, resembling a niacin skin flush.

Niacin Flushing: Causes, Sensitivity, Is It Dangerous?

Niacin, Inflammation, Oxidative Stress, Skin Health, Supplements

If you’ve ever taken a niacin supplement and suddenly felt like your skin was on fire, you’re not alone. Up to 90% of people experience this uncomfortable reaction called niacin…

A stylized pink anatomical heart with geometric facets sits on a soft pink background surface.

Is Niacin Good for Your Heart? New Studies Show Hidden Risks

NAD+ Precursors, Biomarkers, Cardiovascular Diseases, Inflammation, Niacin, Supplements

For decades, doctors recommended niacin supplements to patients struggling with high cholesterol. This B vitamin seemed like a perfect solution for heart health. Recent…

Colorful red, blue and white capsule pills are scattered randomly across a light blue background.

Niacin (B3): Side Effects, Reactions, Overdose Risks Explained

NAD+, Biomarkers, Guest Blog, NAD+ Precursors, Niacin, Supplements

You probably know niacin as vitamin B3, a nutrient that helps convert food into energy. But what happens when you take too much? Recent research reveals a troubling truth about…

Two supplement bottles of NMN and Niacin side by side comparison in dramatic lighting

NMN vs. Niacin: Safety and Efficacy for Longevity

NMN, Longevity, NAD+ Precursors, Niacin

Inside your cells, there’s a fascinating molecule called NAD+ that plays a key role in how you age. This coenzyme isn’t just important – it’s essential for hundreds of processes…

A picture of two healthy matured women running

15 Best Longevity Supplements in 2025 (Ranked by Evidence)

NAD+, Creatine, Longevity, NAD, NAD+ Precursors, Niacin, Nicotinamide, NMN, Nutrition, Quercetin, Turmeric/Curcumin, Vitamin C, Vitamin D3

We’re living in an exciting time for longevity research. Scientists have moved beyond basic theories about aging to understanding exactly how certain molecules can influence how…

Bottle of Niacin Beside a Jar of Niacinamide Cream

NAD vs Niacin vs Niacinamide: Vitamin B3 Differences Decoded

NAD+, NAD+ Precursors, Niacin, Nicotinamide, Vitamin B

The vitamin B3 on your supplement label hides a deeper truth. What appears as a single nutrient actually represents a family of compounds—each following its own path through…