Myers Cocktail is a nutrient IV drip of vitamins and minerals mixed in a set ratio. It is used for fatigue recovery and general condition, and each ingredient is involved in producing energy and in nerve and muscle function. Because it skips oral absorption and enters the bloodstream directly, blood levels rise quickly.

Once a week is recommended. Change is felt between immediately and a week, because replacing a deficient nutrient produces a relatively fast response. As your condition stabilises the interval widens, and during a demanding stretch it may be shortened. Many people time it to such a stretch rather than keeping a fixed schedule.

The difference is that the blend is relatively standardised. Other nutrient drips are combined freely by the clinic to suit a goal, whereas this one is a long-established combination that carries a name, so the backbone is similar wherever you have it. Exact doses still differ by clinic.