Suggest B-complex Supplements For Hair Loss

Good morning Dr Prasad,I am a male aged 25 suffering from hair loss from the past 2 years. Although I have refrained from taking medications, I have preferred to tackle the problem with a strong nutritious diet. I work out regularly and take proteins supplements. On a friends advice, I have started using Tugain 10% since the past 3 months, but haven t seen any result.I read Finasteride tabs help too, but I do not want to take any medications without an advice. Which brand would you suggest? And what other supplements like B-Complex, Vitamins, etc should I take?Can arginine help?Please help.Anirudh