Supplements can help, but only when you take the correct ones, and there's no way we can know your medical history or anything about your eating/exercise/lifestyle habits.
Ask your doctor to do a couple of blood tests on you. Iron, Vitamin D3, electrolyte panel, complete blood count, thyroid, etc. Tell your doctor you don't have enough energy, and be very honest with him or her about all the medications you take.
And consider keeping a food journal. That's just a notebook page per day, listing the foods you eat. Be specific (I know, I say this all the time here). Don't write "had a snack this morning". Write:"had a cup of Swiss Miss cocoa and 3 Girl Scout cookies at 10 am". Write: "at 8 am, had breakfast which was 2 scrambled eggs and white toast with I Can't Believe It's Not Butter and grape jelly".
Then, after a couple of weeks, look at what you're eating. Is it all frozen food or canned food or boxed mixes or packets? Are there fresh vegetables? Is it all low fat, sugar-free, "diet" stuff, because if it is, you're feeding your body artificial sweeteners and lots of chemicals. Choose foods with one ingredient (such as butter made from cream) rather than food with a list of ingredients (such as a "buttery spread" with a list of ingredients that is several inches long). Eat food that is recognizable. If you eat zucchini, don't eat it in muffins or chocolate bread. Eat it sliced and steamed.
Ask your doctor for a recommendation, after you show the food journal to him or her, about how to eat healthier, and whether some vitamin supplements might help (after reviewing your blood tests results).