Hi Patricia @angiedani, Welcome to Connect. Here is some information I found that may help answer your question.

"Can baclofen make muscle spasms worse?
Take as directed. Baclofen oral tablet is used for either short-term or long-term treatment. It comes with serious risks if you don't take it as prescribed. If you stop taking the drug suddenly or don't take it at all: Your muscle spasms won't get better and may get worse."
-- Baclofen, Oral Tablet - Side Effects, Dosage, Uses & More: https://www.healthline.com/health/drugs/baclofen-oral-tablet

"Along with its needed effects, a medicine may cause some unwanted ... legs, feet, or sex organs; loss of appetite; muscle ache or pain ..."
-- Gabapentin (Oral Route) Side Effects - Mayo Clinic: https://www.mayoclinic.org/drugs-supplements/gabapentin-oral-route/side-effects/drg-20064011

Have you discussed you severe muscle cramps with your doctor or pharmacist to see if gabapentin or baclofen may be causing the muscle cramps?

Gabapentin is known to cause muscle cramps and many people cannot tolerate. It made me uncoordinated and I stopped it. Read the label from pharmacy before you stop it for any precautions. Baclofen which I’ve been on since 1998 does not cause muscle cramps but treats muscle spasms. You should also consider fluid intake and mineral deficiency as causes too. If it’s bothersome enough seek medical advice.