Hi, I had gone through your question and understand your concerns. Gabapentin is generally well tolerated, with common adverse effects including somnolence, dizziness, ataxia, and fatigue.It lacks significant drug interactions, as is not metabolized in the liver, does not induce liver enzymes, and is not bound to plasma protein. The medication is excreted unchanged in urine and often requires multiple administrations throughout the day because of its short half-life.Gabapentin is often initiated at a lower dosage and increased gradually until effectiveness is reached. Gabapentin should not be stopped suddenly or the patient may experience side effects such as anxiety, insomnia, nausea, pain, sweating ,diaphoresis, irritability, agitation, confusion, tachycardia, catatonia, and status epilepticus . Since this is not your case i think your husband will not experience any side effects. Hope it Helped! Best Regards