Vomiting, Shaking, and Disoriented for Hours. After a Big Nootropic Overdose, Chris Bumstead Faced a Breakdown That Taught Him a Vital Lesson

A supplement mistake leaves most people with minor side effects — but occasionally, it turns into a full-blown nightmare.

Recently, fitness influencer and Olympia competitor Chris Bumstead shared a harrowing personal story that started with a nootropic product sample and ended with a full-body neurological meltdown.

This wasn’t a THC-edibles-gone-wrong kind of story. It was the result of an accidental megadose of Huperzine A — a common ingredient in cognitive enhancement supplements — that hit harder than anything he’d ever taken before.

The experience was intense, but as Bumstead shared later, it also taught him a valuable lesson about overstimulation, presence, and finding peace in stillness.

What Actually Happened?

“I took eight pills instead of four,” Bumstead explained, noting that the sample came from a source outside his usual trusted manufacturer. “But I didn’t think it was going to be a big deal.”

It turns out that the formula had a critical error. Each serving was meant to contain 200 micrograms of Huperzine A — but instead, it had 200 milligrams. That’s a staggering 2,000 times the intended dose.

That high a dose of Huperzine A isn’t simply ineffective — it becomes toxic.

What is Huperzine A?

Huperzine A is a compound extracted from a type of Chinese moss. It acts as an acetylcholinesterase inhibitor, meaning it blocks the enzyme that breaks down acetylcholine — a neurotransmitter heavily involved in memory, learning, and muscle function.

In small amounts, this can sharpen mental focus and improve cognitive performance. But in excessive doses, it can trigger serious side effects, including:

• Nausea and vomiting
• Dizziness
• Muscle twitching or cramping
• Low heart rate
• Excessive sweating
• Restlessness, insomnia, or anxiety

In Bumstead’s case, it was all of the above and worse.

The Acute Symptoms Were Immediate and Overwhelming

After completing a workout and heading to the office, everything seemed normal — until it wasn’t.

“I flushed red, my heart rate was pounding, I started sweating and got nauseous. I went outside, and then the second the sun hit me, I just started throwing up,” he said.

Over the next few hours, he vomited repeatedly, struggled to see clearly, and reported severe disorientation. “I couldn’t drive because everything was shaking. I laid down on the gym ottoman for four and a half hours. I couldn’t even look beyond five feet in front of me.”

Most tellingly, he couldn’t use his phone. “My brain was so wired I literally couldn’t look at a screen,” he said, explaining why it wasn’t a typical cannabis-type high. This was a full-blown neurological overload.

How the Body Reacts to Huperzine A in Extreme Dosages

Hyperstimulation of the parasympathetic nervous system — the body’s “rest and digest” state — can lead to a condition sometimes referred to as a parasympathetic crisis.

While Huperzine is supposed to bolster focus by boosting acetylcholine levels, a dose too high floods the nervous system. Muscles can contract uncontrollably, digestion turns volatile, and the brain becomes overly sensitive to stimulation — all of which Bumstead experienced in real-time.

A Wake-Up Call on More Than One Level

Amidst the nausea and confusion, he had a strange realization: it was one of the first times in years he had done absolutely nothing for hours. “My body was freaking out, but my mind was the calmest it had been in a while,” he shared.

That sense of calm, odd as it was, opened a door.

He realized how much mental noise he was constantly immersed in — from consuming books and podcasts to interacting online, always chasing progress or knowledge.

“Every second of free time, I’m thinking, ‘What book should I read? What more can I learn today?’ But I never stop to just be,” he said.

For the first time in a while, he wasn’t doing — he was just existing.

The Deeper Takeaway: Consuming Less to Feel More

The fitness world — and the modern world in general — often glorifies constant hustle, perpetual growth, and always being “on.” Bumstead admitted he fell into that cycle just like so many others.

But through what could’ve been a dangerous mistake, he stumbled onto a rare opportunity: a chance to reset. “There’s beauty in suffering when you can find meaning in it,” he said, referencing a quote from Viktor Frankl’s Man’s Search for Meaning.

Rather than add more to his mind, he’s started thinking more about what could be shed. “Who are you that is lost and trying to build a concept of yourself in order to be found?” he quoted. “You’ll never find yourself in what you’ve built to define yourself.”

From Cautionary Tale to Change in Routine

In the days that followed, Bumstead shifted his training priorities toward rebuilding — but with a mindset of doing less to ultimately be more.

This included intense giant-set hypertrophy workouts with coach Justin King, higher-carb bodybuilding phases, and being intentional with rest and recovery. The key difference? Slowing down wasn’t just tolerated — it was embraced.

Should You Worry About Nootropic Supplements?

The honest truth is, supplements can be powerful tools — but they can also be dangerous when doses are off or when quality control fails. Huperzine A, for instance, is considered safe at 50 to 200 micrograms per day, especially when cycled on and off.

A dose of 400–500 micrograms might be pushing it. Bumstead took an estimated 2,000,000 micrograms.

Always vet new supplements carefully, and avoid samples from unknown or untested manufacturers. And if you’re mixing products, avoid overlapping ingredients where cumulative dosages could sneak up on you.

When to Seek Help

In the supplement world, subtle side effects are common. But symptoms like:

• Blurry vision
• Severe nausea
• Disorientation
• Rapid heartbeat
• Excessive sweating or shaking

…should never be ignored. Call your doctor or visit urgent care immediately if you experience more than one of these.

Final Thoughts

Chris Bumstead’s story is a potent reminder that even the most disciplined athletes aren’t immune to overdoing it — especially when trusting unfamiliar products.

But more than that, his experience is a window into something more pressing: our lives are overstimulated.

“Presence is underrated,” he said. “We’re always consuming something. But sometimes, existing with yourself is the most important experience you can have.”

So whether or not you take supplements, consider the larger message: slow down more. Rest isn’t a weakness, and doing less can make space for greater strength — mental, emotional, and physical.