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Primary Series In clinical studies of participants 16 years of age and older who received Pfizer-BioNTech COVID-19 Vaccine containing 30 mcg of a nucleoside-modified messenger RNA encoding the viral spike (S) glycoprotein of SARS-CoV-2 (30 mcg modRNA), adverse reactions following administration of the primary series included pain at the injection site (84.1%), fatigue (62.9%), headache (55.1%), muscle pain (38.3%), chills (31.9%), joint pain (23.6%), fever (14.2%), injection site swelling (10.5%), injection site redness (9.5%), nausea (1.1%), malaise (0.5%), and lymphadenopathy (0.3%)

Yang DC, Tsay HJ, Lin SY, Chiou SH, Li MJ, Chang TJ, et al

The solution here is an anti-scale system, also sometimes referred to as a water softening system

However, the evidence for chronic fatigue syndrome/myalgic encephalomyelitis (ME/CFS) remains limited, and NICE guideline NG206 does not recommend supplements as a treatment for ME/CFS

Effect of dietary components on the gut microbiota of aquatic animals