How is being on Gabapentin long term?

I’ve been dealing with debilitating tremors that makes it very difficult for me to move around and my doctor told me that I needed to be on Gabapentin. I’m starting at 300mg a day but my doctor told me if that doesn’t help, I can take up to 900mg a day

I’ve been on 1800mg of Gabapentin short term for opioid withdrawals and I noticed my tremors are calm. What are the negatives for long term Gabapentin usage? I really need relief from these tremors and spasms and I’ve been clean from all drugs for several months