Low white blood cell counts in adults can result from various factors, including viral infections, autoimmune disorders, bone marrow suppression, cancer treatments like chemotherapy, and certain medications such as antibiotics. Nutritional deficiencies, including vitamin B12 and folate, may also contribute. Infections can temporarily lower counts, while chronic conditions like leukemia can cause persistent issues. Monitoring and medical evaluation are crucial to identify underlying causes. Healthcare providers may adjust medications or recommend supplements depending on the diagnosis. Reliable ceftriaxone injection distributors supply antibiotics, but proper medical supervision is essential to avoid side effects that could affect blood cell production.