Theyre Maharishi ayurveda,Zandu or Baidyanath. You may even take triphala juice of apex brand. Its better to take erand bristha haritaki churna before bed at night rather than triphala if you've chronic constipation.

First of all you can't take any medicines without doctors advise , consult ayurveda doctor and u can have

Dose of triphalatablet is 500gms should be taken with lukewarm water night times 2 tabs Brand names-Himalaya ,Baidyanath ,Charaka

For chronic hard stool, Triphala is a safe and effective Ayurvedic option for regular bowel regulation. You can take Triphala tablets (500 mg–1 g) once daily at bedtime with lukewarm water. Trusted brands: Himalaya, Baidyanath, Kerala Ayurveda, or Maharishi Ayurveda — all are reliable and GMP-certified. Start with one tablet at night after food. If stools remain hard, you may increase to two tablets nightly for a few days. Once bowel habits normalize, continue with one tablet daily for maintenance. Also: • Drink plenty of warm water through the day. • Include fiber-rich, easily digestible foods. • Avoid excessive tea, spicy or dry food.

Have fibrediet dalia seasonal fruits vegetables pomegranate drink plenty of water avoid spicy food junkfood.

Use isabgol...

Ok, no one fires bullet or messile  ... For just constipation at ur age ayurveda share there are so many things can cause constipation like dryness or heavy food or heavy exercises

Home made

Consult ayurveda physician for proper diagnosis and root cause of ailment before consuming any medicine