synergism is the term used for mixing two drugs together make the drugs stronger
Additive effect -MFH:3
That would be a drug cocktail.
A fun night
Combining two or more numbers to find the sum is called addition.
It is necessary to use a combining vowel when joining two root words. This is called combining form. An example of this is the word gastroenterology.
merger
FALSE
Combining two atomic nuclei is called nuclear fusion.
eclectic therapy
An unexpected effect that occurs when you take to two drugs at same time is called a drug interaction.
Nuclear fusion
The combination of two light atomic nuclei to form a heavier nucleus is called fusion.
Compounds
Combining drugs leads to drug synergy, where the combined effect is greater than the sum of the individual effects. Since we're in the illicit-drugs realm rather than the licit one (where a doctor might prescribe two separate antibiotics to exploit synergism to kill a really nasty infection), one famous synergism is mixing booze and barbiturates, which used to be a popular way for women to attempt suicide.
Physically combined set of cells which have a same origin and to perform a specific function is called a tissue.