Yes Sir…..on original CIBA Pharmaceuticals Ritalin ads, it states in all the medical literature
Ritalin (Methylphenidate) enhances the analgesic properties of Opioid painkillers, reduces sedation, enhancement cognitive function and increased energy & mood-boosting properties
Dextro-Amphetamine (Dexedrine) used in WWII in combination with Morphine Sulphate significantly enhanced the analgesic properties of the Morphine …….Monoamines DAT, NET in addition to Opioids / Endorphines are a painkilling super match combo
Brompton Cocktail

(for serious chronic pain 20+ years)
Methadone 100-125mg
Ritalin (Methylphenidate) 50-70mg IR
Diazepam 20-30mg
Alprazolam 0.5-1mg
Pregabalin 300mg
Ethanol (Gin 2.oz) X3-5 drinks over 3-4h
Premium Belmont cigarette
This oral cocktail (all pulverized in same glass, hot water to dissolve , add sweet orange juice, drink…30-45min Onset) will have me melt away in pain free comfort while the moderate robust dose of dopaminergic stimulant keeps me mentally alert and vigilant while at same time enhancing analgesic properties of entire oral cocktail
But Oxycodone & Ritalin is the best Euphoric oral Speedball …..original formula is Diacetylmorphine (Heroin) and Cocaine HCL in same hypodermic needle. A True Speedball. Properly formulated to one’s tolerance and needs is easily the best analgesic treatment for serious pain relief