As far as BP meds go, ACE inhibitors and calcium channel blockers can also cause memory problems so be aware.

Along with the acetyl-L-carnitine you can add ALA (alpha lipoic acid) and NAC (N-acetyl cysteine) to help memory and cognitive function. DHEA can also sharpen your thinking.

Antidepressants are a hoax - SSRI's SNRI's what a hoot. They've made billions for big Pharma though. Klonipine is addictive if used on a regular basis and there are even rehab places specializing in klonopine addiction, just ask Junior Seau's family (he had CTE from football).

There are natural alternatives for high BP (hawthorne extract, hibiscus extract, 3nB celery seed extract...) as well as for depression (5-HTP [but if you have high BP that's a problem, SAM-e, etc.], and anxiety.

I tried Valerian root for anxiety without success but there is a product called Pharma GABA by Natural Factors which works great for me. Every so often I still need a bit of lorazepam (.25mg) to sleep.

Good luck on your search for answers - use Big Pharma products as a last resort.