When cold season starts, zinc is one of the first supplements people reach for. One of the best-selling options on Amazon is a 50 mg caplet that lists 455% of the Daily Value on its label. That sounds impressive, but a big percentage is not the same as a better dose. Here’s how that number … Read more
Electrolyte powder has moved from the gym bag to the kitchen counter. People stir it into water after a run, on a hot day, or just because it tastes better than plain water. Whether you need it depends on how much you sweat and what the packet adds to your day. Here’s when electrolyte powder … Read more
The Amazon listing for one popular Akkermansia capsule says it “Increases GLP-1 Production.” It’s a bold line, especially now that GLP-1 drugs are everywhere. But the human trials behind Akkermansia tell a narrower story, and the details matter if you’re deciding whether a $2-a-day capsule belongs in your routine. This article is for general informational … Read more
There’s one number you see on turmeric supplement bottles and in ads again and again: black pepper makes curcumin absorb 2,000% better. It’s repeated so often that it feels like settled science. The original study is from 1998, though, and a newer independent trial found that adding the same black pepper compound did not help. … Read more
Two L-theanine bottles sit side by side on Amazon. Both list 200 mg. One costs $0.50 a capsule, the other $0.07. So what are you paying for? That gap is real. On a single Amazon listing in late September 2026, L-theanine products ranged from about $0.07 to $0.96 per capsule. Some of the more expensive … Read more
Take a nicotinamide riboside supplement for eight weeks and your blood NAD+ level can climb by as much as 142%. That number is real, measured, and repeated across multiple clinical trials. What’s less clear is whether a higher number on a lab readout means you’ll actually feel, move, or age any differently. This post contains … Read more
One softgel of this supplement delivers 5,000 IU of vitamin D — 25 percent more than the official daily upper limit set by U.S. health authorities. Here’s what that actually means, and whether the coconut oil and vitamin K2 in the same capsule change the picture. This post contains affiliate links. If you make a … Read more
Magnesium glycinate is sold everywhere as the “best absorbed” form of magnesium. The problem: the official NIH list of well-absorbed magnesium forms doesn’t actually include it. Here’s what the research does and doesn’t say about absorption, sleep, and how much is actually safe to take. This post contains affiliate links. If you make a purchase … Read more
The idea that creatine wrecks your kidneys traces back to a single 1998 case report — and that patient wasn’t just taking creatine, he’d also been on a kidney-damaging drug for five years. Here’s what nearly 30 controlled studies since then have actually found. We’ll get into where this fear actually came from, what the … Read more
Here’s the uncomfortable math on that 1,000mg vitamin C capsule: once you cross the 1-gram mark, your body’s absorption rate drops below 50% — and popping a second capsule won’t change that. If you’ve ever wondered whether a high-dose vitamin C pill is really doing what the label promises, this is the article for you. … Read more