C Pink contains Ferrous Ascorbate and Folic Acid, which can sometimes cause stomach upset or nausea. If it does not suit you, gentler oral alternatives like Iron Bisglycinate, Carbonyl Iron, or Sodium Feredetate are often much better tolerated by the stomach. In some cases, a liquid iron preparation may also be recommended. Please consult your doctor before switching, as they will need to prescribe the exact alternative formulation and dosage that is right for you, while also monitoring your hemoglobin levels safely.