Frequently Asked Questions

Order and processing

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Due to safety and legal concerns, we do not accept returns nor do we resell products that have previously shipped out.

Product Information & Administration

The shelf life for an opened bottle of Astro’s Oil Advanced Renal Care Formula is up to 90 days. An opened bottle of Astro’s oil Advanced Renal Care Formula must be stored in the refrigerator.

An unopened bottle of Astro’s Oil Advanced Renal Care Formula stored in the fridge has a maximum shelf life of up to 12 months. If stored at room temperature and out of direct sunlight, the shelf life is up to 8 months.

The smell is caused by Oil that has spilt on your pet’s fur while you are administering the dose. The fur speeds up the oxidation of the Oil by facilitating aeration.

Luckily there is a solution that works very well; just mix a little vinegar into water and wipe the affected area with a clean cloth moistened in this solution.

If you are having some difficulty administering Astro’s Oil Advanced Renal Care Formula try the following:

-Divide the dose in 2 or 3 and mix into a portion of your pet’s food (canned food works best) and administer the appropriate number of times
per day;
-It can  be mixed into any flavor of baby food your pet finds tasty and given as a treat (again divide the dose to conceal the taste if necessary), this mixture can also be syringe fed to your pet when required
-Mix with a little yogurt (a probiotic type or Kefir, 1 tablespoon) or some tuna juice

-You can also fill empty gel caps with Astro’s Oil Advanced Renal Care Formula and pill your pet, we will soon have a beef and chicken flavored capsule filling kit available for those who wish to use this method of administration.

In most cases, it’s the administration of the Oil via pipette that some pets don’t like especially if the oil came right out of the fridge and the dose
was not warmed in the bulb of the pipette before administration.

Though I mentioned on the website that sub-Q’s should be discontinued as soon as possible, one should be careful no to do so prematurely. The pet should be in a stable condition (BUN and creatinine levels only moderately above normal-high, the values either declining or at the very least consistent for a period of 6-12 weeks). When the decision has been made to wean the pet off sub-Q’s, it is the daily volume that should be cut by 25% and the progress of the pet monitored for any negative effects. After a couple of weeks, the volume is cut by another 25% and again observe any negative effects or signs of dehydration. Continue in this way until the pet is totally weaned off the fluids. Keep in mind that sub-Q’s might still be necessary every now and then as your pet’s condition will fluctuate, it’s the nature of kidney pathology.

The Astro’s oil Nitrogen-Creatinine Scrub works extremely well on its own. However, if you wish to enhance its efficacy, you can introduce a good quality probiotic (1 cap/day) or use 1 tablespoon of either kefir or probiotic yogurt as a treat. For pets that do not eat kefir or yogurt, you can mix Astro’s Oil Nitrogen-Creatinine Scrub into any wet food and administer 1 probiotic cap/day.

The best time to introduce Astro’s Oil 3 products is when the kidney pathology is jin it’s early stage and it’s even preferable to supplement a healthy pet with the products to help promote long term renal health.

Yes, the three products are excellent supplements for healthy pets.


The Fish Oil is derived from deep, cold water mackerel and sardines caught off the coast of Norway, these fish tend to contain the lowest levels of pollutants. The oil processed from the fish is concentrated (high EPA + DHA) via a freeze-fracture technique which also molecularly distills it. Molecular distillation is the most effective method of purifying fish oil and always achieves purity results that far exceed FDA requirement for heavy metal and PCB content. 

Some pets like the taste others do not, kidney disease causes an alteration in the pet’s sense of taste and many experiencing constant nausea. If your pet has difficulty taking Astro’s Oil Advanced Renal Care Formula just divide the dose in 2 or 3 and mix into canned/wet food.

One of the ingredients in Astro’s oil Advanced Renal Care Formula is a natural form of vitamin E called mixed gamma tocopherols, it congeals at low temperature, which causes the liquid in the bottle to appear cloudy. If the bottle is left out of the fridge long enough to warm up to room temperature it will become clear again. The bottle needs to be vigorously shaken to homogenize the contents before administering a dose (the small particles observed are one of the ingredients, Ubiquinol).

Yes, Astro’s Oil products are 100% natural and can be administered concomitantly with all medications and supplements routinely used to treat kidney disease.

Astro’s Oil Advanced Renal Care Formula is intended to support the kidney health of your pet, it should be administered on a daily basis for its entire life.

Yes, Astro’s Oil Products have been used to help thousands of kidney disease pets worldwide for over 12 years with no reported adverse side-effects.


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