It replaced a decongestant that's a precursor to methamphetamine.
A new study in the Journal of the American Medical Association looked at 25 melatonin gummies and found that some contained much more melatonin than advertised, or none at all.
Drugmakers have pulled some nonlifesaving products, hesitating to punish ordinary Russians by withdrawing vital treatments.
Oncology experts say advances in cancer drugs have played a major role.
It started with a national wage cap during WWII.