>>5961705 pb

"After Pervitin, a methamphetamine drug newly developed by the Berlin-based Temmler pharmaceutical company, first entered the civilian market in 1938, it quickly became a top seller among the German population. The drug was brought to the attention of Otto Friedrich Ranke, a military doctor and director of the Institute for General and Defense Physiology at Berlin's Academy of Military Medicine.[3] The effects of amphetamines are similar to those of the adrenaline produced by the body, triggering a heightened state of alertness. In most people, the substance increases self-confidence, concentration, and willingness to take risks while at the same time reducing sensitivity to pain, hunger, and the need for sleep. In September 1939, Ranke tested the drug on 90 university students and concluded that Pervitin could help the Wehrmacht win the war. Cocaine, whose effects substantially overlap with those of amphetamine but feature greater euphoria, was later added to the formulation to increase its potency through the multiplicative effects of drug interaction and to reinforce its use by individuals.

Medical authorities described this plan, under which the distributed pills numbered in the millions, as having the negative consequence that many soldiers became addicted to drugs and useless in any military capacity, whether combat or supporting.[4] "

https://en.wikipedia.org/wiki/Drug_policy_of_Nazi_Germany

Not Bayer, but a company called Temmler made it back then.