PeptidesUScom or Signature Supplements are two American companies that offer the highest quality peptides. Both of them are excellent; I use them frequently for my cycles and stack them with TB500, IGF-1 LR3, and other substances. Memory loss, fatigue, headaches, weight gain, diarrhea, nausea and queasiness, skin problems, hair loss, rashes, inflammation, convulsions, anxiety, migraines,...