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Additional exclusion criteria included the use of muscleaffecting medications, pregnancy, allergies to device materials, recent muscle strains or injuries, cardiovascular, respiratory, or neurological disorders, recent use of recovery modalities, or ongoing physical therapy

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Sampaio JS and Passarinho A: Surgical correction of severe Peyronie's disease without plaque excision

Peptides are short chains of amino acids that act as signaling molecules in the body, as MedlinePlus describes in its overview of peptide hormones

Most side effects are dose-dependent, especially nausea and gastrointestinal disturbances