The leaflets in this section are authored by an experienced pharmacist. Pharmacists are experts in medicines. The medicines in this section include those used for treating various deficiencies such as vitamin B12, testosterone or folic acid. If you've ever thought "Who shouldn't take calcium?", "How do I take my thiamine?", "How do I get the most from my multivitamin treatment?" or "What problems can vitamin A cause?" information leaflets in this section will have answers for you.