The title basically says it all. I'm wondering if there is a drug that makes you feel love and self-love but without the upper effect. A drug that makes you slower, more relaxed, instead of giving you an increased heart rate. The reason I'm asking is because I think it would make a great combo with DMT. MDMA + DMT sounds kinda dangerous because they both increase your heart rate.
GBL/GHB is the first thing that comes to mind, its even called "liquid ecstasy". Going to try for the first time this summer both molly and dmt increase your heart rate but it's not to dangerous levels. both molly and ganja increase heart rate too but theres no danger of mixing them either. mixing GBL/GHB with DMT would probably be a lot more dangerous but that's because those two have really small safety margins (recreational dose is close to lethal dose)
I've done MDMA + DMT and I wouldn't consider it a 'dangerous mix' but it's probably not a healthy mix either. Experimenting with it once or twice should be ok though. I've done GBL and I'd say the first half of the experience may be like a downer mdma sort of but then the latter half it seems to have stimulating, almost coke-like properties. A low dose of mescaline might be worth exploring and I've heard (possibly experienced) MDEA is a more chilled out version of MDMA but there's not really a market for that drug.
Any opioid is the 'downer' equivalent IMO. Take 15mg of Oxycodone and you will feel love and warmth along with empathy and emotion for the world around you just as much as on MDMA.
Banging Heroin, and for some people I would say xanax. I've had more people get emotional with me when on xanax than with mdma actually, but that could all be situational.