This is my opinion after decades of studying these matters, spiritual discernment, and paying close attention to people that are living to 100+ years old.
First, let's get this out of the way: Prescription drugs are poison, don't take them if you want longevity. Period. Most have insecticides, rat poisons, and dangerous concentrations of fluoride and other garbage in them. Most put the body into toxic cycles and cause more and more side effects, to which you have to run and get more drugs to treat. With that out of the way, we can move into finding true longevity.
Most of the supplments you are taking aren't the best you can be taking, and many you will simply urinate out. Once you start on the path of health and alternative health on your path to physical immortality (or close to it) you will learn that the good stuff isn't found at Rite Aid.
Centrum has a class 2 carcinogen in it (research it), and uses questionable synthetic ingredients and food colorings. It's certainly less than ideal, and in my investigations is probably doing very little, and quite possibly - some harm. You are better off going with a very good organic/natural multi-vitamin, or better yet, a "Whole Food" supplement.
Carefully examine this one: http://www.lovemegafood.com/
(their lifestyle product has an impressive array of high ORAC ingredients)
What you get with that brand are the entire fruit, ground up, then slowly dried - very carefully. So you aren't getting questionable synthetic C manufactured in China. You are getting an entire organic orange - in a pill. Synthetic D is a Rat Poison used in 3 major Rat Poison brands, I am unconvinced that synthetic D is beneficial. This produce contains natural sourced D. The key here, is when you get natural source vitamins YOU NEED A LOT LESS OF THEM because their absorb rate is effectively 90-100% vs 4-18% for synthetics.
Adding something as simple as a few cups of "Tulsi Tea" to your diet can make astounding health improvements. Tulsi Tea is rich in nutrients, Basil is one of the highest ORAC spices you can find. The benefits have been well documented. You ABSOLUTELY do not need a Statin if you drink Tulsi Tea - period!
With that out of the way. You can change from toxic table salt to Himalayan Salt, which has about 84 trace minerals, your body takes what it wants, and discards the rest. It's how salt has been consumed since the dawn of man. Salt was a major source of minerals for mankind, until the advent of processed, killed table salt. You can experience remarkable improvements in healthy by simply switching to Himalayan Salt.
I also recommend a twice yearly "Detoxification", this really makes a difference. The first time can be rather harsh as you purge years of abuse, cleanse your systems, and place yourself back into balance. After that they become rather trivial and more a matter of twice yearly "Tuneups" like an oil change on your car - and they have very little side effects - as long as you improve your habits. The very best Detox kit I have found (and I use it twice yearly) is FASTOX1.
What you will likely find is almost everything wrong with you - fixes itself in short order. You'll find dramatically improved energy, well being, and you'll rarely if ever have a single thing to complain about regarding physical, mental, and spiritual health.
There are a few "Tonics" I recommend to most people, Mycodefense is amazing, it's a longevity pill with a ton of longevity mushrooms in it. It's cheap, and can have dramatic improvements on your body within a very short period of time. 1-2 a day is plenty for almost anyone. I encourage you to research each of the ingredients and see for yourself. Some of them have been well studied, and proved to have amazing benefits.
Given all of this, in the unlikely event you still feel the need for an SSRI, TCM has an immenslely effective remedy for sleep issues, depression, and all things related to stress and depression. It's been used for hundreds of years. My wife was on SSRI's for years until I introduced her to this, and after a few months she was completely free of them with no need to take one ever again. They work, and they are called "Happy Pills" overseas. 100% natural, 100% harmless, and free of any toxins of heavy metals. (tested there, here, and everywhere inbetween) Free and Easy Wanderer Plus puts your body chemistry back into order - FAST!
One important thing - water. Tap water is toxic trash. Drink only Reverse Osmosis or Distilled, or if you are lucky and live next to an artersian spring, drink that. Carefully research tap water, and you'll find it is contaminated with in some cases - over 300 different chemicals, prescription drugs, and random heavy metals. The most unhealthy people I know almost exclusively drink tap water.
Don Bradley has some amazing health tips, while I don't agree with them entirely, he provides a basis of good health that few people address, and I actually found myself already on much of his protocol long before I read his blog.