 The Phentramin D has caffeine and some of the ingredients in decongestants along with several other boosters. I haven't tried it, but it does sound intriguing.  Google what these are and decide whether it's one you'd like to try:
Phentramin-d™ contains 1,3-Dimethylpentylamine hydrochloride + 1,3,7 Trimethylxanthine
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