B-Complex Chewable 50ct from Solaray

If you want to always be ready for the dilution method, you might try keeping chewable B-vitamins on you. They don't taste that great, but a chewable (or liquid) B-vitamin will act much more quickly than a capsule.

Or! You could try Vitamin Water in "Revive" or "Stress B" flavors throughout the day for a discreet way to consume B vitamins regularly.

And being hydrated is always a good idea, drug test or no.