I did read an article once, even referenced it, that interferon reduces our
dopamine, the feel good chemical in our brain. I started taking Tyrosine. I also tried NADH, it helped, Keep looking you will find other suggestions, like daily vitamin, B12, Vitamin D. I personally think that it depletes other things in our body but have only been able to find Dopamine reduction. If you have any cramps then take calcium, magnesium, potassium, zinc. I hope the best for you.