Also, combining valproic acid with the benzodiazepine clonazepam can lead to profound sedation and increases the risk of absence seizures in patients susceptible to them.

Calcium D-glucarate is made by combining glucaric acid with calcium to make supplements that people use for medicine.

Copper(II) bromide can be obtained by combining copper oxide and hydrobromic acid:

KP's NZ Drug Company was the first in the country to combine sulphuric acid and bone dust to produce superphosphate.

The Australian biotechnology company Giaconda has developed a treatment for Hepatitis C infection that combines chenodeoxycholic acid with bezafibrate.

Small amounts of chlorine gas can be made in the laboratory by combining hydrochloric acid and manganese dioxide.

It is however prepared by combining chloroacetic acid with the amide derived from dimethylaminopropylamine and lauric acid:

In the technique knon as Curtius' Synthesis, I ultimately found a process that proved useful for combining lysergic acid with amines.

By combining lysergic acid with the amino alcohol propanolamine, I obtained a compound that was identical to the natural ergot alkaloid ergobasine.

Combine citric acid, sugar and tartaric acid.