Welcome to the forum Stella!
Can't address the supplement from a personal perspective but I've been around long enough that honestly anything you buy OTC to address appetite control or "metabolic acceleration" or anything like that is generally ... well, bullshit. Seriously.
I've read reviews on a vitamin site that I use frequently. The reviews are impartial, I trust the site (it's a general vitamin/nutrition/health site that sells many, many brands) and the general consensus among reviewers seems split 50/50: Doesn't do a thing for some people, others feel it is an effective aid to appetite control and who knows how much of that is placebo effect? Apparently there is the issue of making sure the supplement is adequate strength, as well. And frankly, I distrust the opinions of any site/video devoted to a supplement. Of course they're going to tell you the stuff works, they want you to buy it, lots of it, in fact.
That being said ... I'm just a pinch older than you (soon to be 49) and I honestly feel that getting a practical handle on your overall health, making permanent lifestyle/diet changes and working towards realistic, sustainable goals is far more important than hoping some magic pill will melt the pounds away.
Look, the fact is, even if ANY pill works it's not a permanent solution and you have to wonder what are the potential side effects (anybody remember the phen/fen debacle??) And what about maintenance, the real bugboo with weight loss? Sooner or later you have to accept that consciously choosing to eat right and get moving daily is the only way to maintain your health and weight and it doesn't get easier as you get older, let me tell you that.
IMO, save your money on the diet supplement and buy a good quality digital food scale and start getting a handle on what you actually eat daily. Set a realistic number for daily caloric intake -- considering your age I'd start at 10 times your bodyweight -- divide those calories into grams of protein, carbs and fat (4 calories to the gram for protein and carbs, 9 calories to the gram for fat), and then you split the percentage of your calories into nutrient macros (nutritionists agree that for weight loss you should get at least 25% to 30% of your calories from protein, weight lifters eat more, but protein is the slowest digesting macro and keeps you satiated longest). For an averagely active woman, trying to drop bodyfat, I say get 35% of your calories from protein (211 grams) another 35% of your calories from carbs (again, 211 grams) and 30 percent from fat (80 grams). Find a diet diary (my fitness pal, fit day, calorie king, to name a few) and log every bite of food and swallow of anything that isn't water that goes into your mouth. Additionally, get at least 30 minutes a day of exercise that (preferably an hour) utilizing both cardio and resistance training. Rinse, repeat. As you lose weight you have to recalculate your calories.
And no, I don't think a 45 year old woman can healthfully lose 60 lbs in 3 months. Maybe half that if you're extremely active and disciplined with your diet. Anything more than 2 lbs a week and you're losing whatever muscle mass you may have now. And whether you like it or not your age and hormones are already fighting with you. Your metabolism is slowing (has been, happens to all of us after age 35 to 40) and many women's hormone levels start becoming erratic after age 35, as well.