Hello there.

We used this textbook: Ganong WF. 2005. Review of medical physiology. 22nd ed. New York: Lange Medical Books, McGraw-Hill.

These textbooks are very useful:

Boron W, Boulpaep E. 2002. Medical physiology. New York: Saunders.

Hall JE. 2016. Guyton and Hall Textbook of Medical Physiology. 30th ed. New York: Elsevier. (and all previous editions)

Sherwood L. 2010. Human Physiology. From cells to systems. Brooks/Cole.

We also commonly use the books mentioned by Piotr . The best books are from McGraw-Hill and Elsevier.

Just go for Guyton and Ganong recent editions that is what you need.

Guyton and Hall