Yes. The product is described as a veggie capsule and as vegan-friendly. That means the capsule shell is plant-based rather than gelatin, which is relevant if you avoid animal-derived ingredients.
In the source information, the active components listed are 3 mg melatonin, valerian root, passionflower, chamomile, skullcap, hops, GABA and L-taurine. No animal-derived ingredients are listed there. If you follow a strict vegan diet and need certainty about trace ingredients or manufacturing details, check the detailed label on the bottle before purchasing.
Use the capsule the same way you would any bedtime supplement: swallow it whole with a little water shortly before bed. Keep the bottle out of direct heat and moisture, and out of reach of children. The product is a food supplement, not a meal replacement, so it is not meant to provide nutrition or substitute for a balanced diet.
It is intended for adults. If you have a chronic condition, are pregnant, breastfeeding, taking medication, or considering it for someone under 18, consult a doctor before use.