Jake
Founder of VitaCheck · writes the Journal
About
I'm not a doctor or a dietitian. I'm a 35-year-old desk worker who took zero supplements his whole life, then started boxing and got humbled. Now I'm trying things one at a time, on myself, and writing down what actually happens. This is my log, not advice.
I built VitaCheck because the same questions kept eating my time — does my multivitamin overlap with my B-complex? am I over the upper limit on zinc? does this combo actually do anything? — and the answers were scattered across forums, abstracts, and product labels. So I put the math, the upper limits, and the interactions in one place, and I write down what happens when I take the stuff myself.
I'm not a clinician. Everything on this site is educational. The guides cite primary sources; the Journal is n=1 experience, dated and honest about what I can and can't tell.
Experience & method
- Personally tests every supplement covered on the site — started from zero pills in 2026 (was on zero before), logs every change in the Journal.
- Builds the VitaCheck stack-checker (upper-limit math, interaction rules, duplicate detection) against NIH Office of Dietary Supplements reference values.
- Edits every blog post against the same primary sources before publishing — no AI-only drafts go live without a human read-through.
Where to find their work
Recent articles by Jake
- Guide · 2026-06-20Creatine Dosing Without a Loading Phase: Same Result, Less Bloating
Skipping the loading phase reaches full saturation in 3–4 weeks at 3–5 g/day. When loading is worth it and when it isn't.
- Guide · 2026-06-19Does Creatine Damage Your Kidneys? What the Creatinine Confusion Means
The kidney scare comes from a misread lab marker, not real damage. Here's the distinction — and when to actually be cautious.
- Guide · 2026-06-18Creatine for Vegetarians and Vegans: Why You May Respond Most
Plant-based eaters start with 20–30% lower muscle creatine stores. Here's what that means for dosing and expected benefit.
- Journal · 2026-06-17Day 4 — pizza for lunch, chicken and rice for dinner, and the first real pump
First day with the post-boxing lift block. I felt a real pump today — maybe creatine, maybe not, but I'm writing it down.
- Guide · 2026-06-17Creatine Beyond the Gym: What the Research Actually Says
A graded, honest look at what creatine does for aging, cognition, bone and metabolic health — plus dosing, safety, and who actually needs it.
- Journal · 2026-06-16Day 3 — three rounds instead of two, and a small pump test tonight
Stack unchanged. Boxing went one round longer than usual, and I can't tell yet if that's fitness or the pills.
- Journal · 2026-06-14Day 2 — swapped vitamin C for a multivitamin, kept the creatine
Ate like a normal person, took two pills, and I'm curious how tomorrow morning feels.
- Journal · 2026-06-13Day 1 — 35, zero supplements, and a boxing habit that humbled me
First pills of my life. Day one, no claims, just a baseline.