Feline herpesvirus treatment?

Hi. My cat has feline herpesvirus. He was diagnosed with it when he was little and I've been giving him lysine powder since then. His eyes never get watery anymore unless I don't give him lysine a couples of days but when he has a flare up he has sneezing moments and his a bit congested. Besides lysine his vet gave him some supplements called Feline Immune System Support. I don't see a difference in him right now with the new supplements, but hopefully in the long run they will do something for him.
My question is. Do you give your cat anything for this virus?
Any supplements, vitamins? Is there something that I should try that would be better for his sneezing flare ups? Any vitamins out there that would help him get a stronger immune system?
I will gladly look into every suggestion.
Thank you

Those are the supplements, they are quite expensive 33$ for 90 pills and he takes lysine 500mg twice a day ( 1 at night, 1 morning in his wet food). 22$ for a box that I replace every 4 months.

I've never had a cat with the Herpes Virus, but most people just give the L-Lysine as maintenance (250 mg twice a day), then during a flare-up they up it to 500 mg twice a day.

Some people have added Lactoferrin.  Here's a thread on that:  http://www.thecatsite.com/t/267703/stubborn-herpes-infection-add-lactoferrin-in-addition-to-lysine 

mrsgreenjeens said:

I've never had a cat with the Herpes Virus, but most people just give the L-Lysine as maintenance (250 mg twice a day), then during a flare-up they up it to 500 mg twice a day.

Some people have added Lactoferrin.  Here's a thread on that:  http://www.thecatsite.com/t/267703/stubborn-herpes-infection-add-lactoferrin-in-addition-to-lysine 

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Thank you so much for this, I will definitely want to try this but I was wondering where do I buy such thing? I can't seem to find something for cats.

The person who started that thread says (within the thread) that she buys this:  .  There are probably other references within that long thread of other products...not sure. 

mrsgreenjeens said:

The person who started that thread says (within the thread) that she buys this:  http://www.amazon.com/Jarrow-Formulas-Lactoferrin-250mg-Capsules/dp/B0013OQGBY/ref=sr_1_1?ie=UTF8&qid=1386344694&sr=8-1&keywords=jarrow+lactoferrin.  There are probably other references within that long thread of other products...not sure. 

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Thank you, Ill do more research on this.