About Us

Robert Muniz


Soon after his 1965 graduation from Harlingen High School, Robert Muniz Sr. started pharmacy school with encouragement from his brother, Dr. L.G. Muniz. He attended Pan American College for his basics, and soon transferred to the University of Houston Pharmacy School, graduating with honors in 1970. He was a member of Rho Chi Academic Honor Society and Kappa Psi Pharmaceutical Fraternity, where he forged many lasting professional and social relationships.  He and wife Lupita, lived in Pasadena, Texas while he finished his last year of pharmacy school. Upon graduation, the couple returned to Harlingen, where Robert worked at MacPherson's Pharmacy. After 18 years as a pharmacist there, he left to form a partnership with Ray Acosta, and in 1988 they formed Acosta Muniz Rio Grande Pharmacy. In 2009, Robert's oldest son, Bobby, received his pharmacy doctorate and purchased Mr. Acosta's share to establish Muniz Rio Grande Pharmacy. Robert has many loyal customers who appreciate his genuine care and professional experience. Robert and Lupita have three sons, Bobby Muniz, Michael Muniz, and John Matthew Muniz. In his spare time, Robert enjoys hunting and golfing with his family and friends.


Bobby Muniz
Dr. Bobby Muniz was born and raised in Harlingen, Texas. Bobby  is a graduate from Harlingen High School and Texas A&M University, College Station.


After graduation Dr. Muniz worked for Kroger Manufacturing in Fort Worth, TX.  While at Kroger he learned about managing employees and the importance of having systems in place to produce consistent results. 


Dr. Muniz decided to pursue his M.B.A. from St. Mary's University in San Antonio.  After graduation, he moved to Columbus, OH where he worked for Abbott Laboratories. While working as a production supervisor at Abbott, Bobby learned the importance of workflow management. 


While in Columbus, Dr. Muniz realized an opportunity and chose to pursue his dream of becoming a pharmacist.  He moved to Houston and attended Texas Southern University School of Pharmacy where he met his beautiful future wife Amy.  After graduation from pharmacy school, Bobby and Amy moved to Harlingen and were married.  They have three beautiful children, Sophia Amor, John Robert, and Patrick Robert who love music, dancing and group hugs. In his spare time Bobby enjoys spearfishing, bay fishing, barbequing and taking his family to South Padre Island.


In Harlingen, TX Bobby is an active member of the community. In 2014 Bobby became a school board member for Harlingen Consolidated Independent School District. Bobby is also a candidate for a Fellowship in Metabolic and Nutritional Medicine (FMNM).



 Michael Muniz, RPh


Dr. Michael Muniz graduated from Harlingen South High School in 1996. In 2004, he received an Associate’s Degree in Surgical Technology from Texas State Technical College in Harlingen. He graduated from the University of Texas at Brownsville in 2007 with a Bachelors Degree, majoring in Biology and a minor in Chemistry. He graduated in 2012 from Texas A&M Health Science Center Irma Lerma Rangel College of Pharmacy in Kingsville, TX.


Dr. Michael Muniz, RPh is married to his wonderful wife Norma Muniz and they have four wonderful children. Nikki and Renee are twins and the oldest of the kids, then Lauren who is considered the middle child and finally Mikey, who keeps all of the house in order when dad is at work.







Christine Hernandez Torrralba


Christine Hernandez Torrralba grew up in Harlingen with her older brother and sister and her parents, Librado and Blanca Hernandez. After graduating from Harlingen High School, she attended the University of Texas at Austin. Upon completing the prerequisites to pharmacy school she applied and was accepted to the UT College of Pharmacy. She lived in Austin studying and working until she accomplished her goal of graduating with a Bachelor’s of Science in Pharmacy in May of 1998.


Christine always knew she wanted to return to the Valley to work after pharmacy school. When she graduated she accepted a job with Walgreens where she opened the first store in Harlingen and later became the pharmacy manager. After working there for a few years, she left and worked at Walmart for several years until she decided to work part time in order to have more time with her growing family. She began working at Muniz Rio Grande pharmacy part time and then was thrilled to have the opportunity to accept a permanent position there. Having worked for large chains in the past, Christine enjoys and appreciates the difference in working at an independent family owned and operated pharmacy.


When Christine is not at the pharmacy, she spends her time with her husband Danny Torralba and her three boys Justin, Jason, and Joaquin. They keep her busy with practice and activities which include baseball, basketball, football, swimming, and jujitsu. She is their biggest fan!



A prescription from a licensed practitioner is required for compounded medications.

Professional Affiliations
  • PCCA
  • IACP
  • TPA
  • NCPA
  • TJC

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