Nicotine Pouches, Blood Flow, and Performance: Myth or Fact?

The "kick" from nicotine comes from how it acts on your body, including tightening your blood vessels. That's one way to feel more alert. It's not the only way. Flow uses TeaCrine®, a premium, naturally derived, non-caffeine energy mechanism, plus functional mushrooms like Lion's Mane and Cordyceps, to support focus and energy a different way, without tightening your blood vessels.

Nicotine tightens your blood vessels every time you use it, not just after years of heavy use. It happens fast, then fades, then happens again the next time you use it. In one controlled study, healthy men who weren't smokers were given nicotine on its own, not cigarettes, not vaping, just nicotine. Their bodies showed a 23% drop in physical arousal compared to men given a placebo.1 That's a same-day effect, not a slow buildup over years.

It doesn't, and it's worth being clear about that. Cordyceps has a long history of traditional use for circulation and energy. But history alone isn't proof. What actually backs Cordyceps in Flow is real research, studies on how it affects exercise performance and blood flow.2 Traditional use is a real part of the story. It's just not the part that counts as evidence.

For a lot of people, the hardest part of quitting isn't the nicotine. It's giving up the pouch itself, the habit of reaching for it at your desk, in the car, before the gym. Nicotine is the ingredient. The pouch is just the format. Flow keeps the pouch and takes out the nicotine, so you're swapping the habit, not quitting cold turkey. In a 2026 survey of Flow customers, 76% said they either quit nicotine completely or cut their use by at least half.3

An erection depends heavily on healthy blood flow. Beyond the nicotine study already mentioned, a 2024 review of 57 studies with more than 7,000 people found real differences in blood vessel health between men with erectile dysfunction and men without it.4 A separate review pointed to smoking's effect on blood vessel lining and blood flow as one likely cause.5 And a review of more than 28,000 people found smokers were significantly more likely to have erectile dysfunction than nonsmokers.6 None of this proves nicotine alone causes every case. But it's a lot of research pointing in the same direction, so "internet talk" isn't a fair way to describe it.

This is the concern we hear the most, and it's a fair one. But it's not what Flow users report. In the same 2026 survey, 87% said they had better energy throughout the day.3 TeaCrine® is built to support focus and steady energy without the jitters, crash, or dependency people often get from caffeine or nicotine. Methylcobalamin B12, a highly bioavailable form of vitamin B12, supports your energy metabolism on top of that.