When choosing any supplement, athletes should look for the BSCG Certified Drug Free seal or similar third-party certification and need to verify the lot they use has actually been tested
Always review product labeling and documentation before storage or use
Concentrations above the normal level of 221pmol/L are indicative of an adequate B12 status, whereas those between 150 and 221pmol/L, or often below 150pmol/L, are indicative of B12 depletion or deficiency, respectively

Warning signs that need medical attention Seek medical evaluation within 24 to 48 hours if you experience: Redness that continues expanding beyond 48 hours after injection Redness diameter exceeding 10 centimeters Increasing pain (not decreasing) after 48 hours Warmth and hardness accompanied by fever above 100.4 F (38 C) Pus, drainage, or fluid oozing from the injection site Red streaks extending outward from the injection site (sign of lymphangitis) Reaction that has not shown any improvement after 7 days Seek emergency medical care immediately if you experience: Hives or rash spreading beyond the injection site to other body areas Swelling of the face, lips, tongue, or throat Difficulty breathing, wheezing, or shortness of breath Dizziness, lightheadedness, or feeling faint Rapid heartbeat Severe abdominal pain These emergency symptoms suggest a systemic allergic reaction (anaphylaxis), which is rare but documented with tirzepatide

Thirty-six of the products are marketed for people and fifteen of the products are marketed for pets