Here are the notes from the lecture that Dr. Jennifer attended relating to the above question.

Hypersensitivity to herb--> Vomiting after administration, skin irritation, diarrhea
-->Cut dose in half or stop herb

Extract = Glycerin based form – preferred form
Tincture = Alcohol based form
Decoction = Liquid from boiling root
Infusion = Liquid from boiling plant

Urinary Tract Disease Treatment and Prevention

1) Cranberry Extract—prevents adhesion of bacteria to mucosa, high in vitamin C, cooling properties
Women who drink a pint of juice a day had 63% reduction in recurrence of UTIs
3000mg = 24 oz of juice  
1/8-1/4 capsule TID cats & small dogs
½ capsule TID large dogs
1 capsule TID giant dogs
NO SIDE EFFECTS  

2) Couchgrass (Crab Grass)—contains mannitol & mucilages, good for inflammation, mild antibacterial effect

3)   Garlic—antibiotic, good for E. coli, Klebsiella, Proteus, Staph
  Average clove of garlic has 100,000 Units of Penicillin
  VERY HIGH doses can cause Heinz body anemia in cats
  Kiolic—capsule/liquid
  2-4 drops S-BID cats & small dogs
  4-10 drops S-BID medium dogs
  Garlitrin  1 tablet SID large dogs

4) Goldenseal—antimicrobial, stimulates immune system be enhancing macrophage activity
Becoming extinct and some companies mix this herb with others that cause side effects
Caution in animals with low blood pressure, low blood sugar and pregnancy
Do NOT use for prolonged periods of time, on & off schedule, < 2 weeks

5) Horsetail—strong diuretic,  soothing, anti-inflammatory, lithotriptic (dissolves stones)
Good for dogs with IVD and urine retention 
Use only a known source as this herb can pull heavy metals from the soil
With prolonged useà thiamine deficiency and potassium depletion
¼-1/3 cap BID small, ½-1 cap BID medium, 1-2 cap BID large and giant

6) Marshmallow Root—soothing and healing to inflamed mm., enhances WBCS, diuretic
High in calcium and helps bind oxalate at the intestinal level
  Decoction should be used BID for large (3-4 oz) and giant (5-6 oz) dogs 
  VERY SAFE, No contraindications

7) Uva Ursi—antiseptic, diuretic, strengthens and tones
Infusion should be used BID for large (1 oz) and giant (2 oz) dogs
Do not use with concurrent GI problems or pregnancy,
long term use lowers K (potassium)

8) Vitamin C—antioxidant, enhances immunity, increases interferon, increases thymic hormones
During stress, the body secretes more vitamin C and makes more susceptible to infection
ACUTE EPISODES—Give every 2 hours to bowel tolerance for 24-48 hours
Maintenance Doses
250-500mg BID small 
500-750 BID medium
750-1000 BID large 1
000-2000 BID giant
Water-soluble-->excess is excreted
 

ANIMALS’ APAWTHECARY—Standard dosing … 
12 drops per 20 pounds—Glycerin-Based Formulations

Cigarette smokes contains cadmium--> promotes urinary stone formation

Bladder Stones

1) Vitamin B6—lowers production & excretion of oxalates:
2-10 mg/day small, 10-20 mg/day medium, 30 mg/day large, 40 mg/day giant

2)  Magnesium—low levels increase calcium oxalate stone formation (phenonomena seen w/Struvite diets)
  Lose Mg in stress situations, sulfate form can cause loose stool
  50 mg SID small, 100 mg SID, medium, 300 mg SID large, 400 mg SID giant

3) Glucosamine—inhibitors of growth & aggregation of Ca+ oxalate crystals, 
250-1000mg BID, NO side effects

4) Corn Silk—anti-inflammatory, diuretic properties, removes gravel from urinary tract
Infusion for large (1-2 oz) and giant (3-4 oz) dogs QID initially then BID
NO known side effects, prolonged use can irritate bladder

5) Gravel Root—powerful solvent, can be used alone or in combination, NO known side effects
Decoction-->3 ml TID small, 5-10 ml TID medium, 1-2 oz TID large, 3-4 oz giant

6) Wild Carrot—highly valuable for gravel, stricture or any obstruction in urinary tract, “ace in the hole”
No side effects, can be given to rabbits too
Infusion-->3-5 ml B-TID small, 5-10 ml medium, 15-20 ml large, 1 oz giant

RENAL FAILURE

Kidney Glandular—used to strengthen kidney, not enough to use alone,
“like cures like”  ¼-2 caps BID

Free Amino Acids—provides easily digestible source of protein that kidneys do not have to remove as waste, 750mg/capsule--> ¼ SID small, ½ cap medium, ¾ cap large, 1-2 giant

Alfalfa & Kelp—detoxifies, supplies micronurtients, freshens breath, stimulates appetite
Pro-rate human dose, Granular/Powder--> ¼ tsp. S-BID small, ½ tsp. medium, 
½-1 tsp. large, 1 tsp. giant

Lecithin—needed by every cell in the body, protects against CV disease, helps with anemia & muscle weakness, 50-100mg SID small, 150 mg medium, 200-250 mg large, 
350-500 mg giant
Overdose-->anorexia, bloating, nausea, and gas

Vitamin A—important in healing urinary tract lining and in immune function
 1000 IU/day small, 2500 IU/day medium, 3000 IU/day large, 5000 IU/day giant

Vitamin B Complex—get flushed out with CRF, pro-rate on human dose, NO side effects.