Stop lying to people. Those refer to amounts of pseudephedrine, not to ephedrine. They are different molecules with different activity. The jiggerup of ephedrine doesn’t occur for pseudephedrine, at least not for sane doses of the medications you mention.
I say this:
If you can’t get through the day without a chemical jumpstart, go see a doctor and find out why you’re in such miserable health instead of feeding the quacks.
If you want to lose weight, try exercising a litle willpower and finding an activity you enjoy. If you are really in such a miserable state of compulsive overeating or morbid obesity that this is impossible, consult a real physician instead of buying quackery.