Delta Prime I can remember when I used pills at one point but they didn't do anything for my penis size. Sometimes pills will say "use right before intercourse for confidence" due to the fact that it can help with your erection strength. This is all that it's good for in my opinion, but for increasing your size, it's highly ineffective.
Completely safe... IF you do them right and choose the right penis exercise guide. Just like with anything else, if you don't follow instructions and/or don't stay consistent, chances are, you're not going to get the results you hoped for.
So, the best bit of advice I can give you is to make sure that you stay natural with increasing your penis size. Staying natural pays off... BIG TIME!

https://www.youtube.com/watch?v=4uWUzDI0ln4
https://deltaprimeinfo.webnode.com/delta-prime-review-price-where-to-buy/
https://www.ketotoneworld.com/delta-prime-reviews/