Pervitin was put on the market in 1938, got a prescription requirement in 1939, and was put under the Rauschmittelgesetzt in 1941. This ruling did not affect the Wehrmacht being supplied with it.
Between April and June of 1940 alone, the Wehrmacht was supplied with 35 million tablets of Pervitin. Specifically, the tank forces in the invasion of France, foot soldiers invading Poland, bomber pilots, and, by 1944, the pilots of one-man submarines made frequent use of it. The drug was further developed by forcing administration and monitoring the effects on prisoners in Sachsenhausen.
One packet consisted of 30 tablets á 3 milligrams, with the recommended dosage being two to four pills per day; though actual use went beyond that, up to two pills every three to four hours. The average dosage for recreational methamphetamine use (nasal intake) is around 100 milligrams. Depending on the dose, the drug taken in pill form was effective for about ten hours.
Problems with frequent use and short-term withdrawal were eventual exhaustion and hallucinations, heart disease or failure, paranoia, suicidal thoughts, and intense aggression or mood swings. Long-term withdrawal could also cause anhedonia and disturbed sleeping patterns.
Both the Bundesarmee and the NVA continued stocking Pervitin up until the 70s/80s, supplied for paratroopers and in medical kits.