sfw
nsfw
4000 YEARS of MEDICINE £
M 2000 BC : Here, eat this root.
■ 1000 AD : That root is heathen! Here, say this prayer.
1865 AD : That prayer is superstition! Here, drink this potion. 1935 AD: That potion is snake oil! Here, swallow this pill.
1975 AD: That pill is ineffective! Here take this