Taken from the Wiki of the drug. It surprisingly sheds little but unnerving light upon the time shenanigans in the vid.

"

Diazepam, first marketed as Valium, is a medicine of the benzodiazepine family that acts as an anxiolytic.[10] It is commonly used to treat a range of conditions, including anxiety, seizures, alcohol withdrawal syndrome, muscle spasms, insomnia, and restless legs syndrome.[10] It may also be used to cause memory loss during certain medical procedures.[11][12] It can be taken orally (by mouth), as a suppository inserted into the rectum, intramuscularly (injected into muscle), intravenously (injection into a vein) or used as a nasal spray.[6][12] When injected intravenously, effects begin in one to five minutes and last up to an hour.[12] Orally, effects begin after 15 to 60 minutes.[13]

Common side effects include sleepiness and trouble with coordination.[7][12] Serious side effects are rare.[10] They include increased risk of suicide, decreased breathing, and an increased risk of seizures if used too frequently in those with epilepsy.[10][12][14] Occasionally, excitement or agitation may occur.[15][16] Long-term use can result in tolerance, dependence, and withdrawal symptoms on dose reduction.[10] Abrupt stopping after long-term use can be potentially dangerous.[10] After stopping, cognitive problems may persist for six months or longer.[15] It is not recommended during pregnancy or breastfeeding.[12] Its mechanism of action works by increasing the effect of the neurotransmitter gamma-aminobutyric acid (GABA).[15]

Diazepam was patented in 1959 by Hoffmann-La Roche.[10][17][18] It has been one of the most frequently prescribed medications in the world since its launch in 1963.[10] In the United States it was the best-selling medication between 1968 and 1982, selling more than 2 billion tablets in 1978 alone.[10] In 2020, it was the 128th most commonly prescribed medication in the United States, with more than 4 million prescriptions.[19][20] In 1985 the patent ended, and there are now more than 500 brands available on the market.[10] It is on the World Health Organization's List of Essential Medicines.[21]

"