You build up a tolerance for the side effects, usually you want to start at like 40/50mg and see if it works for you after an hour and move up if it doesn't (don't go over 100mg though). I think bluechew is compounded e.g. mixed with other things. might want to just stick with straight sildenafil.
The txt only consults I mentioned above works, you can also get the pills mail order from Amazon for a 30 pill prescription at $5 a month without insurance (amazon's rxpass)
A few points I found helpful
- easiest to just get a prescription, like getting antibiotics. If you don't want to physically see a doc, the remote telemedicine places I mentioned work well - no insurance needed
- take it on an empty stomach, food / fats / citrus affects how fast it works... studies show lime/bitter orange juices make it act much faster, or you can crush the pills
- hims etc. all the USA based ones do the same telemedicine to get you straight sildenafil, they have medical staff to approve the prescription
- if you travel overseas places like Brazil or Thailand have it OTC at official pharmacies, no prescription needed