Hormones that have additive effects are often referred to as "synergistic hormones." When these hormones are released together, their combined effects amplify the overall response in the body, leading to a greater physiological impact than either hormone would produce alone. An example of this is the interaction between glucagon and epinephrine, both of which increase blood glucose levels.
Synergistic hormones.
An additive response is one in which the antimicrobial effect of the combination of drugs is equal to the sum of the effects of the two drugs alone.
A cell is a complex thing, and it can easily handle multiple messages, but if they are conflicting messages then the brain simply won't let the two hormones to be sent together. now if you are talking about a controlled experiment, the cell will decide, based on prior function of the cell, which one to follow, ie: if you send an estrogen hormone to a cell in the testicular wall, it probably wouldn't follow it, unless the cell is a mutated cell.
You could call them a pair of additive inverses.
Two integers that add to zero are additive inverses.
The process by which two hormones exert opposite effects is known as antagonism. Antagonism occurs when one hormone inhibits the actions of another hormone by competing for the same receptors or signaling pathways within the body. This leads to a counterbalancing effect that helps maintain homeostasis.
Polygenic.
When two or more hormones work together to produce a particular result, their effects are said to be synergistic. These effects may be additive or complementary. The action of epinephrine and norepinephrine on the heart is a good example of an additive effect. Each of these hormones separately produces an increase in cardiac rate; acting together in the same concentrations, they stimulate an even greater increase in cardiac rate. The synergistic action of FSH and testosterone is an example of a complementary effect; each hormone separately stimulates a different stage of spermatogenesis during puberty, so that both hormones together are needed at that time to complete sperm development. Likewise, the ability of mammary glands to produce and secrete milk requires the synergistic action of many hormones-estrogen, cortisol, prolactin, oxytocin, and others.
Growth Hormones but they have side effects.
A hyper additive drug interaction is an interaction between two drugs of the same class doing what one drug alone could have done. Hyper additive drug interactions are one reason for antibiotic resistance.
The presence of other hormones, especially auxins, influence the effects of cytokinins.
Insulin and cortisol are two hormones that have both anabolic and catabolic effects. Insulin promotes anabolic processes such as glucose uptake and protein synthesis, while cortisol can have catabolic effects by promoting the breakdown of muscle protein and fat for energy production.