Routine first. Supplement second.

First, work out what the dog is reacting to

Noise, separation, visitors, travel and unfamiliar places are different problems. Note what happens immediately before the behaviour, how early the signs begin and how long recovery takes. This gives you something useful to change and, if needed, to discuss with a professional.

Build predictability

Keep exercise, meals and rest reasonably consistent. Give the dog a quiet retreat that is never used as punishment. For a known event such as fireworks or travel, prepare before the dog is already distressed.

Use gradual exposure—not flooding

Work below the point where your dog panics and pair the trigger with something positive. Forcing prolonged exposure can make fear worse. A qualified behaviour professional can help with a structured plan.

Where a supplement fits

A complementary feed may support the routine, but it does not sedate the dog, teach a new response or remove the cause. Check compatibility with medicines and existing conditions. Sudden behaviour change, severe distress or risk of injury needs veterinary help.