According to RxList this pill is
Mepergan Fortis
I have been unable to confirm this elsewhere on the internet.
Imprint Code: Wyeth / 261
Drug/Strength/Manufacturer: Meperidine HCl 50mg / Promethazine HCl 25mg - Mepergan Fortis - Wyeth
Description: Capsule - Red
Meperidine is a narcotic analgesic. Promethazine (the drug in
Phenergan) is an antihistamine, used in this case to to relieve nausea and vomiting.