So on topic, I should contribute.
One time 80 MDMA pills in 8 days, 2002.
2003 80 pills in about 3 days. By mistake in fact. I had serious time dilation and lost track of time, reality and pill count before I realised I was in a Twighlight void.
900 ecstasy pills between September 2002 and June 2003. Lots other stuff as well while in my final University year.
One incredible weekend in 2004, one whole gram of very pure MDMA crystal on Friday night, plus a gram of ketamine.
Saturday night, still up on the incredible MDMA, weed etc, we went to an outdoor illegal UK rave.
That night I took one "Smilie Face", 7 "Heinenken Stars", plus 5 "Hearts".
13 all truly incredible MDMA pills. Plus 2 grams of ketamine, 5 tabs of acid.
I am confident the MDMA pills averaged over 125 mg easily. So was about 3 grams nearly MDMA plus 3 grams Ketamine, 5 trips, cannabis.
Was an incredible weekend. No harm done either lol, I mean I felt fine throughout and afterwards.
I think I took about 30 MDMA pills in one night in 2002, they were crushed to poweder- "Blue Tulips." On top of 265 British Liberty caps, psilocybin mushrooms brewed, drunk, eaten.
Twice I took 5 mg LSD in 48 hours. In 2011, and 2012.
Many extended MDMA benders. 5 days, 9 days, 11 days. UK "Exodus" festivals 3 nights in August, of the highest quality MDMA pills ever, Lsd, Best cannabis of my life (Skunk, Pollen and hash, 1/8th of each in 2000), mushroom tea, grass truffles.
So many other times too. I didn't even get around to ketamine. One of the most scintillating psychedellic experiences I ever had was at an incredible Undergound London Rave in a disused University Building.
9 E's, 2 drops Liquid acid, Mexican Mushrooms, and loads of ketamine. Wow, stuff was sparking around like never before. Visible energy. Literally atoms and all sorts dancing before my eyes. I had the highest level of agility and coordination, weightlessness and pure energy I have ever experienced.
Lots of very heavy combos of acid, ketamine and ecstacy.
My last ever rave in 2005, just before Lyme Disease struck, I took 6 tabs of Hofmann LSD, 5 high quality MDMA pills, 2 grams ketamine, plus some of the strongest skunk I ever smoked in my life.
These are just examples which come to the too of my head lol!
But no world records. I (only) took about 3500 MDMA pills in 9 years.
I know of people personally who took over 5000.
And I'm sure people have taken upwards of 10,000 MDMA pills.
Maybe 1000 LSD tabs. Again, no record.
I knew people who snorted ketamine 1 gram lines at a time 12 times a day!
Records are hard to achieve. Count me out!