I hope you will not get too discouraged about it yet. Lamictal never made me tired, but I know of others who've said it did to them. Like many medications, such initial sedation can wear off when you get used to the dose. If your mood is lifting that's a very positive sign. Please be patient and tolerant as you grow used to the medication. It is even possible that at higher doses you will no longer feel such sedation. That's not uncommon with certain medications.