You may want to get urine testing strips that may help to determine a possible underlying health issue. This product is one source that can support the determination of specific urine value readings, such as protein, pH, glucose, etc.. Although none of the testing color sets were perfect in color range to easily support a confirmation of values; this one was for me the easiest to read. If you happen to be Red/green color blind, have another person who has normal vision, match the color in the range for each test shown on the chart that comes with this product.
https://www.amazon.com/dp/B087H8XM5L...T1zcF9kZXRhaWw
The pigmentation found in berries is higher in, 'polyphenols' than in tree fruits. Higher sources of polyphenol compounds have been found to lend greater support towards preventing and countering illnesses. Even then, berries aren't the highest natural edible source of polyphenols. In the wild diet of tree squirrels, the highest level of polyphenols is found in the inner living layer of tree bark that their food trees, which also contains protein, calcium, and potassium, manganese and other key micro-minerals. Short of stripping ones own trees of their bark to access the inner living, 'cambium' layer; Pycnogenol (PYC), a harvested organic grown source from the, 'Pinaster' pine, has been found to have various properties (anti-bacterial, anti-fungal, anti-viral, anti-diabetic, anti-oxidant, anti-cancer, analgesic, anti-inflammatory) which aide in maintaining the health of the internal organs and vascular systems. More recently, (PYC)in the presence of microbiota (digestive gut bacteria), was found to act as an, "immunomodulator", that which normalizes ab otherwise overactive or underactive immune system.
https://www.amazon.com/Healthy-Origi.../dp/B00CLYNAUA
Daily maintenance dose for weaned and adult squirrels, (1/64 Tsp.) added to wet mixture like non-cooking boo balls recipe. It also can be added to formula when fed to weaned and adult squirrels; though not for nursing young.