MET‑Rx® RTD 55’s are for people who lead a busy lifestyle. MET‑Rx® understand that some people find it hard to find the time to mix their protein shakes,that’s why MET‑Rx® produced the RTD 55 range – fat free, low in carbs and delicious tasting shakes that are ready to drink (no mixing required).

MET‑Rx® RTD 55 shakes are made from milk protein from two main sources: Casein and Whey, which are without a doubt the two best proteins available. Whey is the most bio-available protein in the world. It’s fast acting and supplies the most important Aminos in large amounts. Casein on the other hand is a slower acting protein that contains other essential Aminos which can help towards providing a base of Amino Acids. MET‑Rx® RTD 55 provides a balance of the two: the Casein influences the whey to act more slowly and stay active in the body longer, increasing the body’s potential to absorb more of it.