Here is the actual amount of Ivomec actually needed for the prevention of heartworms. So for all those that pm’ed me asking for the information, here it is……
The proven dosages are:
Heartworm prevention - 0.003-0.0066 mg/lb
Roundworm - 0.023-0.09 mg/lb
Hookworm - 0.023 mg/lb
Microfilaricide - 0.023-0.09 mg/lb single dose (Let your veterinary treat!)
The proven dosage for a 51-100lbs dog 272mcg. This is the amount of Ivomec in Heartgard (Brown Tablets).
Ivomec 1% solution contains 10,000 mcg (micrograms), which Ivomec delivers in 1mL (cc). A dog only needs 3 mcg of Ivomec, per pound of body weight per month to keep them heartworm free!
So - if 1 cc of Ivomec contains 10,000 mcg, we can bring that number down by mixing it with propylene glycol (don‘t use water, oils, milk, etc. the Ivomec won‘t mixed correctly. So you‘ll never know the amount of Ivomec you‘re actually giving). Which actually works as a carrier agent for the Ivomec. 9 parts - propylene glycol to 1 part Ivomec. That will deliver 1,000 mcg of Ivomec per 1 cc. Then, you only give (orally) 0.1 cc of the mixed Ivomec per 30 lbs of body weight.
***If buying already mixed (Ivermecting to propylene glycol), use a medicine dropper/ear dropper & it's 1 drop per 10lbs IF properly mixed. I suggest heartworm testing once a year regardless of if on heartworm prevention year-round. If you're underdosing, it's best to learn asap.