Btw @Infinite Conscious, I took your post very literally about no medicines. When you followed up, you asked about a single medication, but I just wanted to note that there is also the pill combo method in PPH. My literal interpretation is why I took exception to your comment. There are medications that can cause ctb, alone or in combination, but not at all relaibly if they're OTC, modern sleeping pills or modern psych meds. One could conceivably get hold of barbiturates, but it's still iffy unless it's N.