Reddit mentions of DL-Phenylalanine 500mg DLPA 120 Capsules

L-tyrosine is just further down the metabolic line, also precursor for dopamine. I prefer dlpa myself but either would help ya out. I took both for a time. Dlpa is also a precursor for tyrosine itself.

https://www.amazon.com/DL-Phenylalanine-500mg-DLPA-120-Capsules/dp/B00F9EYA76

I like that brand, piping rock has good inexpensive supplements.

Edit: you can take up to 1500mg per dose, 2 or 3 times a day if needed and then just use less as you feel better. You can take long term but it loses effectiveness after your body adjusts. That's good, because when it stops working you no longer need it usually.

Also, for what it's worth, rhodiola also helped me and I continue to use it today. Just throwing it out there, it relieves stress and provides energy, can be super good for fighting through paws. I had to kick a 10 year sub habit and these supplements seemed to help me a lot after so many failed attempts to get past the 3 to 6 month mark