Spirulina side effects
Across 130 first-hand reports, people mentioned a side effect 8 times (about 6 per 100 reports). The most common: chest tightness, headache, nausea. User reports show what people notice — they can't tell you whether Spirulina is safe for you.
Reported side effects
chest tightness1
headache1
nausea1
vomiting1
dehydration1
rhinitis1
sickness1
bmaa contamination1
In their own words
“Spirulina for fatigue...Ive only recently started Spirulina, and yeah not really seeing too much diff on energy...you should do thorough research on it”
“if i were you i wouldn't touch spirulina. chorella might... but spirulina not.”
“No positives at all, just made me sick.”
Is Spirulina safe? What the research covers
AResearch: Strong52 meta-analyses · 83 randomized trials on PubMed
None of the top reviews we found focus on safety. All research on Spirulina.