One of three different herbs found growing in pots around the Arklay Mountains and Raccoon City, along with Green and Blue Herbs. The Red Herb is useless on its own, but triples the healing effect of the green herb when combined with one.
The herbs were either transplanted to Europe and Africa by Umbrella (unless the plants originally came from one of these locations), as they appear in the fourth and fifth numbered games in the series, fulfilling the same function.
Only in Resident Evil Outbreak can the herb do something alone; It can stop your viral meter for about 30 seconds.
They can be found in almost about every title except Resident Evil: The Umbrella Chronicles and Resident Evil: The Darkside Chronicles, whose game mechanics do not require them.
Resident Evil: The Deck Building Game
The Red Herb is an Item Card in the Resident Evil DBG. It was introduced in the first expansion set, Alliance. The Red Herb is again useless by itself. If trashed along with a Green Herb card, the Red Herb heals not only the player's Main Character, but
their Partner Character as well. This makes it more effective than the First Aid Spray. However, in the hands of the second Claire Redfield character card, it becomes especially deadly. Through Claire's Level 1 effect, she can trash it to raise her base damage (that is, without weapons) by 20. If she trashes a Green Herb alongside it, the effect kicks in again and her base damage is 40. But with both trashed at once, her Level 2 effect doubles all damage she deals, effectively making her base damage 80. George Hamilton from the Outbreak expansion is also able to use Red Herbs to his advantage. Trashing them gives him extra Explores because of his Level 1 effect.