Hi, I’m Lin Kai — a licensed pharmacist who reads the evidence, so you don’t have to.

I’ve spent seventeen years working in hospital pharmacy, where I check prescriptions, catch drug interactions, and answer the same question every day: “Is this supplement actually good for me — or am I wasting my money?”

My background is unusual: I trained in both Western medicine and traditional Chinese medicine, which means I can read a supplement label and a herbal formula with the same skeptical eye. Over nearly two decades at the counter, I’ve watched people spend real money on products that the research simply does not support — and skip the ones with genuine evidence behind them, because they were cheap and unglamorous.

This blog is where I write about what I’ve seen and what the studies actually say: which supplements work, which ones are marketing dressed up as science, and how to tell the difference before you hand over your money.

Books

I’m the author of two books, both available now on Amazon Kindle:

The Pharmacist’s Guide to Herbal Supplements: Reishi, Lion’s Mane, Turmeric & More — What Works, What’s Hype, What’s a Waste of Money

The Pharmacist’s Guide to Supplements That Actually Work: Evidence-Backed Recommendations: What to Take, What to Skip, and What Most Clinicians Don’t Cover

Both start from the same place: the research. One cuts through the marketing around popular herbal supplements; the other is a practical, evidence-backed guide to what is actually worth taking — and what to skip.

Where else you can find me

**Medium** — long-form evidence-based health articles: medium.com/@linkai1999

**Fiverr** — independent supplement-label review and ingredient analysis for consumers and small brands: fiverr.com/kailin_pharmaci

If you’re a consumer standing in the supplement aisle, or a brand that wants its labels to be honest and compliant, that’s what I do.

A few things I believe

Evidence over anecdotes. If a claim can’t survive contact with a clinical trial, it shouldn’t survive contact with your wallet.

You deserve the source. I cite the studies I’m talking about, so you can check my work.

Supplements are support, not medicine. Anyone who tells you a pill replaces your prescribed medication — or a flu shot — is not your friend.

This site is education, not a prescription pad. Everything here is for educational purposes only and is not personalized medical advice. If you are considering starting, stopping, or changing any medication or supplement, talk to your doctor or pharmacist first.

Prefer email? I also publish The Pharmacist’s Desk, a free weekly newsletter with the same evidence-first guidance — one email a week, no spam, unsubscribe anytime. Subscribe here: https://kailinpharmacist.substack.com