Description
During periods of grass growth, seasonal change, stress, or fluctuating weather conditions, some horses may become spooky, grumpy, muscle sore, reactive, or difficult to handle.
These changes can occur during spring and autumn — but they can also happen at any time of the year depending on pasture conditions, workload, stress levels, and individual nutritional needs.
Pazture Mag is a daily nutritional supplement designed to support calm behaviour, muscle function, focus, and relaxation through highly absorbable magnesium and Vitamin B1 (Thiamine).
Suitable for year-round feeding, Pazture Mag is especially helpful during:
- Spring and autumn grass growth
- Rain after dry spells
- Times of stress or workload
- Horses on lush pasture
- Horses prone to tension, sensitivity, or excitability
Why Choose Pazture Mag?
Power Star Nutrition uses Magnesium Aspartate — commonly referred to as “organic magnesium” — which has a higher biological uptake compared to many other magnesium sources. It is also human grade quality.
Combined with Vitamin B1 (Thiamine), Pazture Mag helps support:
- Calm behaviour and relaxation
- Focus and concentration under saddle
- Healthy nerve and muscle function
- Muscle recovery and comfort
- Horses sensitive to seasonal pasture changes
Signs Your Horse May Benefit From Pazture Mag
Your horse or pony may benefit from daily magnesium and B1 support if they:
- Become spooky or over-reactive when normally calm
- Are sensitive to sound, movement, or touch
- Hate being groomed or rugged
- Show muscle tightness, soreness, tremors, twitching, or cramping
- Lack concentration when ridden
- Have inconsistent behaviour from one ride to the next
- Become more excitable, tense, or difficult to handle
- Fatigue quickly during work
- Struggle to relax after exercise
What does Thiamine, (Vitamin B1) do for horses?
Thiamine is needed for the efficient metabolism of carbohydrates, fats, and proteins. It is also critical for the processing of lactic and pyruvic acids, which contribute to “tying up” and is especially important in competition horses that are often fed large amounts of grain to support athletic ability.
Vitamin B1 may be lacking due to:
- Hard Working Horses
- Horses on high grain diets
- Horses suffering from hindgut acidosis
- Horses suffering from stress
For horses that need extra support from eating green grass and fluctuating weather conditions, Pazture Guarde is a more heavy-duty supplement fed daily.
Pazture Mag can be fed with Ulzeraide Plus for grass and feed challenges.
Why feed Magnesium to Horses?
Magnesium plays an important part in nerve and muscle function. Horses who are deficient show signs of nervousness, and excitability, are jumpy, and have tight sore backs which are not related to saddle fit. They have muscle tremors and skin hypersensitivity.
A magnesium-deficient horse is likely to have a poor tolerance to work, fatigue quickly, and be prone to tying up. They build up lactic acid more quickly which is why magnesium deficient horses sometimes have behavior problems. They fatigue more quickly after work and don’t recover as well.
When a horse gets excited, its body uses magnesium to calm down and relax. The lower the magnesium level, the lower the threshold for new stress. Magnesium deficient horses can start calm during exercise. As the session progresses, they become spookier and more stressed.
What Causes Magnesium Deficiency?
Magnesium tends to be deficient in Spring grasses due to the fast rate of growth.
This is part of the reason why horses exhibit signs of Spring Flush (silly behavior), as magnesium deficiency commonly results in behavioral problems in horses.







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