Final answer:
Cyanocobalamin and methylcobalamin are appropriate forms of Vitamin B12 for a client with severe bulimia to take.
Step-by-step explanation:
Vitamin B12 deficiency is often seen in individuals with severe bulimia. To address this deficiency, appropriate forms of Vitamin B12 for this patient to take would be cyanocobalamin and methylcobalamin. Cyanocobalamin is the most common form of Vitamin B12 and is often used in supplements, while methylcobalamin is the active form of Vitamin B12 that can be directly utilized by the body. Both forms can help improve the Vitamin B12 levels in the client with severe bulimia.