A protein- and pigment-rich algae powder with modest evidence for cholesterol and blood sugar — contamination is the real risk to manage.
TrustedSupp Tier System™ · Tier 4Take by choice, or not at all
Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.
Evidence strength
35/100Limited
WEAKLIMITEDMODERATESTRONGVERY STRONG
What the evidence supports: modest improvements in cholesterol and blood sugar markers in small trials.
This scores how well-supported the claim above is — not how much benefit you personally would get. A high score on a narrow claim does not extend to everything the product is marketed for.
How long to take it
Ongoing use is common; judge by any measurable change after 8–12 weeks.
Who it's actually for
People wanting a plant protein or pigment source; not a meaningful B12 source despite marketing.
Safe upper limit
Unverified
No formal upper limit; 1–8 g daily in trials
Uncontaminated spirulina is well tolerated. The concern is contamination: some blue-green algae products have contained liver-toxic microcystins or heavy metals.