Arnica
Always consult with your Vet before using herbal remedies with other, prescribed, medications.
What actually is it?
Also commonly called leopard's bane, it has a bright yellow, daisy-like flower that blooms around July. It has been used as a homeopathic medicine for hundreds of years.
Arnica works by stimulating the activity of white blood cells, which help fight of illnesses from bacteria, etc. It also works by helping to disperse trapped, disorganised fluids (that are caused by bumps and bruises) from tissue, joints and muscles. It has anti-bacterial and anti-inflammatory qualities that can help in the reduction of pain and swelling and improve wound healing.
Uses in rats
It can be used in rats externally when trying to heal wounds, for fractures and general pain relief. Not recommended for internal use though, as it can cause stomach problems.
Dosages
If you can get the cream, use it on the wounds, sparingly (may cause adverse reaction of the wound is open).
Toxicity
Intake of Arnica (internally) is known to cause vomiting and weakness, among other side-effects.