General Cure is a fish medication by Aquarium Pharmaceuticals which is an anti-parasitic. It treats a wide range of fish ailments, including gill and skin flukes, hole-in-the-head disease, anchor worm, velvet disease and fish lice. You would be surprised what conditions a fish can develop, and no matter how well you take care of your fish, illness can still strike. Some fish diseases require strong medication to cure. General Cure comes in packets, 10 to a box, and it takes two packets for one full course of treatment.
When treating your fish, you must remove the carbon or filter cartridge from the filter, but keep the filter running. If you have a sick tank (which is always recommended), the sick fish can be treated in that tank and will not affect the other fish. For every 10 gallons of water, you empty one packet of medication into the tank. After 48 hours, you empty another packet into the tank. Then you wait an additional 48 hours, change 25% of the water and add fresh carbon to the tank and/or a fresh filter cartridge to the filter.
Remember to wash your hands well after handling fish medication. Also be careful not to let the medication come in contact with your skin or eyes. A lot of these medications, including this one, contain a chemical which is known in the state of California to cause cancer, so use with caution.
One box of General Cure will treat up to 100 gallons of water. The medication does help, but I must admit that I have still lost fish after treating with this medication. Sometimes there is just nothing you can do.
Overall, General Cure is a good medication for treating the stated conditions.