I tried this product and initially felt okay. However, one capsule caused my blood pressure to spike to dangerous levels, resulting in extreme pressure and headaches lasting two days. I also experienced severe nervousness and exhaustion, unable to get out of bed. It was a severe reaction; I cannot take this product.
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Be aware, this product has terrible side effects. I have CRPS, so supplements affect me greatly. My trainer suggested PQQ for energy and cellular repair, but after 7 days starting at 10 mg and increasing to 20 mg, I felt lethargic, depressed, and had headaches. Once I stopped PQQ, I improved significantly, with only a slight headache for 2 days afterwards and fatigue subsiding.
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I ordered this product for neuroprotection while on prescribed ADD medication, fearing long-term amphetamine neurotoxicity. Initially, I heard great reviews, but it caused serious side effects for me. I experienced a staggering headache, chest pressure, and nausea. After just 2 days, I had to stop using it, and today I feel fine, confirming it was indeed the PQQ.
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